Fuller Heavy Duty Transmissions TRSM0430

Service Manual
Fuller Heavy Duty Transmissions
TRSM0430
July 2010
RT-8608L
RTF-8608L
RTO-11608LL
RTO-14608LL
RTOF-11608LL
RTOF-14608LL
RTX-11608LL
RTX-11609A
RTX-11609B
RTX-11609P
RTX-11609R
RTX-12609A
RTX-12609B
RTX-12609P
RTX-12609R
RTX-13609A
RTX-13609B
RTX-13609P
RTX-13609R
RTX-14608LL
RTX-14609A
RTX-14609B
RTX-14609P
RTX-14609R
RTXF-11608LL
RTXF-11609A
RTXF-11609B
RTXF-11609P
RTXF-11609R
RTXF-12609A
RTXF-12609B
RTXF-12609P
RTXF-12609R
RTXF-13609A
RTXF-13609B
RTXF-13609P
RTXF-13609R
RTXF-14608LL
RTXF-14609A
RTXF-14609B
RTXF-14609P
RTXF-14609R
TABLE OF CONTENTS
FOREWORD
MODEL
...................................................................
DESIGNATIONS
LUBRICATION
AND
SPECIFICATIONS
......................................
..................................................................
OPERATION
8-SPEED "LL" MODELS
. . . . . . . . . . . . . .
9-SPEED AND 8608L MODEL
.................................................
13-SPEED MODELS
..........................................................
POWER FLOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TORQUE
RECOMMENDATIONS
...........................................
TOOL REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PREVENTIVE
MAINTENANCE
............................................
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PRECAUTIONS
DISASSEMBLY
.............................................................
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REASSEMBLY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHANGING INPUT SHAFT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR SYSTEM
RANGE SHIFT SYSTEM: ALLMODELS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DEEP REDUCTION AIR SYSTEM: 8-SPEED "LL" MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPLlTTER SHlFT AIR SYSTEM: 13-SPEED MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR SYSTEM SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISASSEMBLY AND REASSEMBLY-SHIFTING CONTROLS
AIR SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GEAR SHIFT LEVER HOUSING ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SHIFT BAR HOUSING ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVALDCOMPANION FLANGE, AUXILIARY SECTION AND CLUTCH HOUSING . . . . . . . . . .
DISASSEMBLYDAUXILIARY SECTION (8-SPEED "LL" M O D E L S ). . . . . . . . . . . . . . . . . . . .
REASSEMBLY-AUXILIARY SECTION (8-SPEED "LL" MODELS . . . . . . . . . . . . . . . . . . . . .
DISASSEMBLYDAUXILIARY SECTION (9-SPEED MODELS AND 8608L) . . . . . . . . . . . . . . .
REASSEMBLY-AUXILIARY SECTION (9-SPEED MODELS AND 8608L) . . . . . . . . . . . . . . .
DISASSEMBLYDAUXILIARY SECTION (13-SPEED MODELS . . . . . . . . . . . . . . . . . . . . . . . .
REASSEMBLY-AUXILIARY SECTION (13-SPEED MODELS
........................
DISASSEMBLY-FRONT
SECTION
............................................
REASSEMBLY-FRONT SECTION
............................................
INSTALLATION-COMPANION FLANGE, AUXILIARY SECTION AND CLUTCH HOUSING
INSTALLATION-SHIFTING CONTROLS
SHIFT BAR HOUSING ASSEMBLY. . . . . . . . . . . . .
GEAR SHIFT LEVER HOUSING ASSEMBLY . . . . .
AIR SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
APPENDIX TAPERED
. . . . . . . . ROLLER
. . . . . . . BEARING
. . . . . . . . SHIMMING
. . . . . . . . . PROCEDURE
.....
FOREWORD
This manual is designed to provide detailed information necessary to service and repair the Fuller®
Transmission listed on the cover.
As outlined in the Table of Contents, the manual
is divided into 3 main sections:
a. Technical information and reference
b. Removal, disassembly, reassembly and
installation
c. Options
The format of the manual is designed to be followed in its entirety if complete disassembly and
reassembly of the transmission is necessary. But if
only one component of the transmission needs to
be repaired, refer to the Table of Contents for the
page numbers showing that component. For example, if you need to work on the Shifting Controls,
you will find instructions for removal, disassembly
and reassembly on page 48. Instructions for installation are on page 174. Service Manuals, Illustrated
Parts Lists, Drivers Instructions, and other forms of
product service information for these and other
Fuller Transmissions are available upon request. A
Technical Literature Order Form may be found in the
back of this manual. You may also obtain Service
Bulletins, detailing information on product improvements, repair procedures and other service-related
subjects by writing to the following address:
EATON CORPORATION
TRANSMISSION DIVISION
Technical Service Department
P.O. Box 4013
Kalamazoo, Michigan 49003
(616) 342-3344
Every effort has been made to ensure the accuracy of all information in this brochure. However, Eaton Transmission Division makes no
expressed or implied warranty or representation based on the enclosed information. Any errors or omissions may be reported to Training and Publications, Eaton Transmission Division, P.O. Box 4013, Kalamazoo, Ml 49003.
MODEL DESIGNATIONS
AND SPECIFICATIONS
Nomenclature:
IMPORTANT: All Eaton Fuller Transmissions are
identified by model and serial number. This information is stamped on the transmission identification tag and affixed to the case.
DO NOT REMOVE OR DESTROY THE TRANSMISSION IDENTIFICATION TAG.
8-Speed “LL” Series Transmissions
RT-8608L Series Transmissions
CHART NOTES:
1 Lengths measured from face of clutch housing to front bottoming surface of companion flange or yoke.
2 Weight — Listed weights are without clutch housing. Weights include standard controls, which consist of
gear shift lever housing, gear shift lever, range and splitter controls and attaching lines. Weight of standard
controls is approximately 10 lbs. (4.5 kg). All weights are approximate.
3 Oil Capacities are approximate, depending on inclination of engine and transmission. Always fill transmission with proper grade and type of lubricant to level of filler opening. See LUBRICATION.
MODEL DESIGNATIONS
AND SPECIFICATIONS
Speed Transmissions
13-Speed Transmissions
LUBRICATION
Proper Lubrication . . .
the Key to long
transmission life
Proper lubrication procedures are the key to a
good all-around maintenance program. If the
oil is not doing its job, or if the oil level is
ignored, all the maintenance procedures in the
world are not going to keep the transmission
running or assure long transmission life.
Eaton® Fuller ® Transmissions are designed
so that the internal parts operate in a bath of
oil circulated by the motion of gears and
shafts.
Thus, all parts will be amply lubricated if
these procedures are closely followed:
Mineral Gear Oil with rust
and oxidation inhibitor
API-GL-1
Lubrication Change and Inspection
Eaton ® Roadranger ® CD50 Transmission Fluid
HIGHWAY USE
Factory fill
Initial drain,
Check fluid level.
Check for leaks.
Every 10,000 miles
(16090 Km)
I
Every 250,000 miles
(402336 Km)
I
I
Change transmission
fluid.
OFF-HIGHWAY USE
First 30 hours
I
Change transmission fluid
(Normal off-highway use).
I
I
HIGHWAY USE
Factory fill
initial drain.
First 3,000 to 5,000 miles
(4827 to 8045 Km)
Every 10,000 miles
(16090 Km)
Inspect lubricant level.
Check for leaks.
Every 50,000 miles
(80450 Km)
Change transmission
lubricant.
OFF-HIGHWAY USE
Every 1,000 hours
Above 1O”F,(-12”C.)
Below IO”F.(-12°C,)
The use of mild EP gear oil or multi-purpose gear oil is not recommended, but if
these gear oils are used, be sure to adhere to
the following limitations:
Do not use mild EP gear oil or multi-purpose gear oil when operating temperatures are
above 230°F (110°C). Many of these gear oils,
particularly 85W140, break down above 230°F
and coat seals, bearings and gears with deposits that may cause premature failures. If
these deposits are observed (especially a coating on seal areas causing oil leakage), change
to Eaton Roadranger CD50 transmission fluid,
heavy duty engine oil or mineral gear oil to
assure maximum component life and to maintain your warranty with Eaton. (Also see
“Operating Temperatures”.)
Additives and friction modifiers are not recommended for use in Eaton Fuller transmissions.
Proper Oil Level
Make sure oil is level with filler opening. Because you can reach oil with your finger does
not mean oil is at proper level. One inch of oil
level is about one gallon of oil.
Heavy Duty Engine Lubricant or
Mineral Gear Lubricant
Every 500 hours
Above 10”E(-12”C.)
Above 10”F.(-12”C,)
Below 1O”F,(-12”C,)
I
Change transmission fluid where
severe dirt conditions exist.
Every 1,000 hours
Every 40 hours
90
80W
All
Inspect fluid level, Check for leaks.
Every 500 hours
First 30 hours
50
I
Factory fill
Initial drain.
Every 40 hours
I
Eaton ® Roadranger®
CD50 Transmission
Fluid
Heavy Duty Engine 011
50
MIL-L-2104B, C or D or
40
API-SF or API-CD
(Prewous API designations 30
acceptable)
1. Maintain oil level. Inspect regularly.
2. Change oil regularly.
3. Use the correct grade and type of oil.
4. Buy from a reputable dealer.
First 3,000 to 5,000 miles
(4827 to 8045 Km)
Recommended Lubricants
Fahrenheit
(Celsius)
Grade
Ambient
Temperature
Type
(SAE)
Change transmission
lubricant on new units.
Inspect lubricant level. Check for leaks,
Change transmission lubricant where
severe dirt conditions exist.
Change transmission lubricant
(Normal of highway use),
I
I
I
I
Draining Oil
Drain transmission while oil is warm. To drain
oil remove the drain plug at bottom of case.
Clean the drain plug before re-installing.
Refilling
Clean case around filler plug and remove plug
from side of case. Fill transmission to the
level of the filler opening. If transmission has
two filler openings, fill to level of both openings.
The exact amount of oil will depend on the
transmission inclination and model. Do not
over fill—this will cause oil to be forced out
of the transmission,
When adding oil, types and brands of oil
should not be mixed because of possible incompatibility.
LUBRICATION
Operating Temperatures
—With Eaton® Roadranger ®
CD50 Transmission Fluid
Heavy Duty Engine Oil
and Mineral Oil
The transmission should not be operated consistently at temperatures above 250°F (120°C).
However, intermittent operating temperatures
to 300°F (149°C) will not harm the transmission. Operating temperatures above 250°F
increase the lubricant’s rate of oxidation and
shorten its effective life. When the average
operating temperature is above 250°F, the
transmission may require more frequent oil
changes or external cooling.
The following conditions in any combination can cause operating temperatures of over
250°F: (1) operating consistently at slow
speeds, (2) high ambient temperatures, (3) restricted air flow around transmission, (4) exhaust system too close to transmission, (5)
high horsepower, overdrive operation.
External oil coolers are available to reduce
operating temperatures when the above conditions are encountered.
Proper Lubrication Levels
as Related to Transmission
Installation Angles
If the transmission operating angle is more
than 12 degrees, improper lubrication can occur. The operating angle is the transmission
mounting angle in the chassis plus the percent of upgrade (expressed in degrees).
The chart below illustrates the safe percent
of upgrade on which the transmission can be
used with various chassis mounting angles.
For example: if you have a 4 degree transmission mounting angle, then 8 degrees (or 14
percent of grade) is equal to the limit of 12
degrees. If you have a O degree mounting
angle, the transmission can be operated on a
12 degree (21 percent) grade.
Anytime the transmission operating angle of
12 degrees is exceeded for an extended
period of time the transmission should be
equipped with an oil pump or cooler kit to
insure proper lubrication.
Note on the chart the effect low oil levels
can have on safe operating angles. Allowing
the oil level to fall 1/2" below the filler plug
hole reduces the degree of grade by approximately 3 degrees (5.5 percent).
Proper Lubrication Levels are Essential!
Transmission Oil Coolers are:
Recommended
— With engines of 350 H.P. and above
with overdrive transmissions
Required
— With engines 399 H.P. and above with
overdrive transmissions and GCW’S
over 90,000 lbs.
— With engines 399 H.P. and above and
1400 Lbs.-Ft. or greater torque
— With engines 450 H.P. and above
— With EP or Multipurpose Gear Oil
Mild EP gear oil and multipurpose gear oil are
not recommended when lubricant operating
temperatures are above 230°F (110°C). In addition, transmission oil coolers are not recommended with these gear oils since the oil
cooler materials may be attacked by these
gear oils. The lower temperature limit and oil
cooler restriction with these gear oils generally limit their success to milder applications.
Transmission Mounting Angle
Dotted line showing “2 Quarts Low” is for
reference only. Not recommended.
OPERATION
8-Speed “LL” Series Transmissions
Shift Lever Patterns and Shifting Controls
OPERATION
9-Speed and RT-8608L Transmissions
Shift Lever Patterns and Shifting Controls
RTX-11609P and RTX-11609R Transmissions
RTX-12609P and RTX-12609R Transmissions
RTX-14609P and RTX-14609R Transmissions
Shift Lever Patterns and Shifting Controls
OPERATION
13-Speed Underdrive Models
Shift Lever Patterns and Shifting Controls
OPERATION
13-Speed Overdrive Models
Shift Lever Patterns and Shifting Controls
POWER FLOW
The transmission must efficiently transfer the engine's power, in terms of torque, to the vehicle's rear wheels.
Knowledge of what takes place in the transmission during torque transfer is essential when trouble-shooting
and making repairs become necessary.
Front Section Power Flow
(All Models)
Auxiliary Section Power Flow:
LO-LO (8-Speed "LL" Models)
7. The auxiliary drive gear splits torque between the
1. Power (torque) from the vehicle's engine is transtwo auxiliary countershaft drive gears.
ferred to the transmission's input shaft.
8. Torque is delivered along both auxiliary counter2. Splines of input shaft engage internal splines in
shaft to the mating "engaged" deep reduction
hub of main drive gear.
gear on output shaft.
3. Torque is split between the two countershaft
9. Torque is transferred to output shaft through sliddrive gears.
ing clutch.
4. Torque is delivered along both countershaft to
mating countershaft gears of "engaged" main- 10. Output shaft delivers torque to driveline as
LO-LO.
shaft gear. The following cross section views
(Figures 2-4) illustrate a 1st/5th speed gear
engagement. Figure 1 illustrates the engagement
of the Lo Speed Gear.
5. Internal clutching teeth in hub of engaged mainshaft gear transfers torque to mainshaft through
sliding clutch.
6. Mainshaft transfers torque directly to auxiliary
drive gear.
Figure 1.
PR15
LO-LO POWER FLOW
POWER FLOW
Auxiliary Section Power Flow:
LOW RANGE (All Models)
7. The auxiliary drive gear splits torque between the
two auxiliary countershaft drive gears.
8. Torque is delivered along both countershaft to
"engaged" low range gear on range mainshaft or
output shaft.
9. Torque is transferred to range mainshaft or output shaft through sliding clutch.
10. Torque is delivered to driveline as LOW RANGE
1st.
Figure 2.
PL1O
LOW RANGE POWER FLOW
(9-Speed Model Shown.)
Auxiliary Section Power Flow:
HIGH RANGE (All Models)
7. The auxiliary drive gear transfers torque
directly to the range mainshaft or output
shaft through "engaged" sliding clutch.
8. Torque is delivered through range mainshaft and/
or output shaft to driveline as HIGH RANGE 5th.
5th direct with 13-speed models.
Figure 3.
PH1O
HIGH RANGE POWER FLOW
(9-Speed Model Shown.)
POWER FLOW
Auxiliary Section Power Flow:
UNDERDRIVE/OVERDRIVE (13-Speed
Splitter Models ONLY)
9. Torque is transferred to output shaft through slid7. The auxiliary drive gear splits torque between the
ing clutch.
two auxiliary countershaft drive gears.
8. Torque is delivered along both auxiliary counter- 10. Output shaft delivers torque to driveline as 5th
UNDERDRIVE or OVERDRIVE.
shafts to mating countershaft gears of
"engaged" underdrive or overdrive splitter gear
on output shaft.
Figure 4.
Pu/o 10
UNDERDRIVE/OVERDRIVE POWER FLOW
13
TIMING
Timing Procedures: All Models
It is essential that both countershaft assemblies of
the front and auxiliary sections are “timed.” This assures proper tooth contact is made between mainshaft gears seeking to center on the mainshaft
during torque transfer and mating countershaft gears
that distribute the load evenly. If not properly timed,
serious damage to the transmission is likely to result
from unequal tooth contact causing the mainshaft
gears to climb out of equilibrium.
Timing is a simple procedure of marking the appropriate teeth of a gear set prior to installation and
placing them in proper mesh while in the transmission. In the front section, it is necessary to time only
the drive gear set. And depending on the model, only
the low range, deep reduction, or splitter gear set is
timed in the auxiliary section.
C. Meshing marked countershaft drive gear teeth
with marked main drive gear teeth.
(After placing the mainshaft assembly into case,
the countershaft bearings are installed to corn=
plete installation of the countershaft assemblies.)
1. When installing the bearings on left counter;
shaft, mesh the marked tooth of countershaft
drive gear with either set of two marked teeth
on the main drive gear.
2. Repeat the procedure when installing the
bearings on right countershaft, making use of
the remaining set of two marked teeth on the
main drive gear to time assembly.
Front Section
A. Marking countershaft drive gear teeth.
1. Prior to placing each countershaft assembly
into case, clearly mark the tooth located
directly over the keyway of drive gear as
shown. This tooth is stamped with an “O” to
aid identification.
C. DRIVE GEAR SET PROPERLY
TIMED
Cut 7300B
Auxiliary Section
A. TOOTH MARKED ON EACH
COUNTERSHAFT DRIVE GEAR
FOR TIMING PURPOSES
cut 7300
B. Marking main drive gear teeth.
1. Mark any two adjacent teeth on the main drive
gear.
2. Mark the two adjacent teeth located directly
opposite the first set marked on the main drive
gear. As shown below, there should be an
equal number of unmarked gear teeth on each
side between the marked sets.
B TEETH MARKED ON MAIN
DRIVE GEAR FOR TIMING
PURPOSES
Cut 7300A
A. Timing the deep reduction gear set of 8-speed
“LL” models; the low range gear set of 9-speed
models; or the splitter gear set of 13-speed
models.
1. Mark any two adjacent teeth on the mainshaft
gear of set to be timed. Then mark the two adjacent teeth located directly opposite the first
set marked as shown in Illustration B.
2. Prior to placing each auxiliary countershaft assembly into housing, mark the tooth stamped
with an “O” on gear to mate with timed mainshaft gear as shown in Illustration A.
3. Install the mainshaft gear in position on range
mainshaft OR output shaft.
4. Place the auxiliary countershaft assemblies
into position and mesh the marked teeth of
mating countershaft gears with the marked
teeth of mainshaft gear as shown in Illustration
C.
5. Fully seat the rear bearings on each countershaft to complete installation.
Correct torque application is extremely important to assure long transmission life and dependable performance. Over-tightening
or under-tightening can result in a loose installation and, in many instance, eventually cause damage to transmission gears, shafts,
and/or bearings. Use a torque wrench whenever possible to attain recommended lbs./ft. ratings. Tighten clutch housing fasteners
in a cross-pattern to help insure even clamp distribution.
(1) MAIN DRIVE GEAR BEARING NUT,
250-300 Lbs.Ft., ApplyLoctite Grade 277
Sealant and Stake to Input Shaft.
(6) FRONT BEARING COVER CAPSCREWS,
35-45 Lbs./Ft., 3/8-16 Threads.
Apply Loctite 242 to Threads.
(6) CLUTCH HOUSING NUTS.
35Lbs./Ft. (47 N.m) +90° CW rotation or
175 Lbs./ft. (237 N.m)
(4) SLAVE AIR VALVE CAPSCREWS,
8-12 Lbs./ft., 1/4-20 Threads.
Apply Loctite 242 to Threads.
(6) SMALL P.T.O Cover Capscrews,
20-25 Lbs./Ft., 3/8-16 Threads.
Apply Loctite 242 to Threads.
(8) LARGE P.T.O COVER CAPSCREWS,
50-65 Lbs./Ft., 7/16-14 Threads.
Apply Loctite 242 to Threads.
(4) HAND HOLE COVER CAPSCREWS,
20-25 Lbs./Ft., 5/16-18 Threads.
(2) COUNTERSHAFT FRONT BEARING RETAINER
CAPSCREWS, 90-120 LBS./Ft., 5/8-18 Threads.
(4 or 6) CLUTCH HOUSING CAPSCREWS, 115 Lbs./Ft. (156 N.m)
TORQUE RECOMMENDATIONS
AUXILIARY SECTIONS
TOOL REFERENCE
Some repair procedures pictured in this manual show
the use of specialized tools. Their actual use is recommended as they make transmission repair easier,
faster, and prevent costly damage to critical parts.
But for the most part, ordinary mechanic’s tools
such as socket wrenches, screwdrivers, etc., and
other standard shop items such as a press, mauls and
soft bars are all that is needed to successfully disassemble and reassemble any Fuller Transmission.
PAGE
The specialized tools listed below can be obtained
from a tool supplier or made from dimensions as required by the individual user. Detailed Fuller Transmitsion Tool Prints are available upon request by writing.
Eaton Corporation
Transmission Division
Technical Service Dept.
P.O. Box 4013
Kalamazoo, Michigan 49003
TOOL
HOW OBTAINED
62
Auxiliary Section Hanger Bracket
Made from Fuller Transmission
Print T-22823
62
Output Shaft Hanger Bracket
Made from Stop Nut and
flat steel stock
54
Tension Spring Driver
Made from Fuller Transmission
Print T-11938
66
Snap Ring Pliers
Tool Supplier
67
Bearing Pullers (Jaw-Type)
Tool Supplier
109
Bearing Puller w/Set Screw
Made from Fuller Transmission
Print T-10325
137
Impact Puller (1/2-13 Threaded End)
Tool Supplier
130
Bearing Drivers (Flanged-End)
Made from Fuller Transmission
Print Series T-18042*
9 9
Oil Seal Driver
Made from Fuller Transmission
Print T-18088-23
167
Countershaft Support Tool
Made from Fuller Transmission
Print T-22247
77
Quill Snap Ring Installer
Made from Fuller Transmission
Print T-22917-F
173
Torque Wrench, 1000 Lbs./Ft. Capacity
Tool Supplier
170
Input Shaft Nut Installer
Made from Fuller Transmission
Print T-22553-A
*Dimensions necessary to determine specific tool number required.
PREVENTIVE MAINTENANCE
PREVENTIVE MAINTENANCE
PREVENTIVE MAINTENANCE CHECK CHART
CHECKS WITHOUT PARTIAL
DISASSEMBLY OF CHASSIS OR CAB
1.
Air System and Connections
a. Check for leaks, worn air lines, loose connections and capscrews. See AIR SYSTEM.
2.
Clutch Housing Mounting
a. Check all capscrews of clutch housing
flange for looseness.
3.
Clutch Release Bearing (Not Shown)
Remove hand hole cover and check radial
and axial clearance in release bearing.
b. Check relative position of thrust surface of
release bearing with thrust sleeve on pushtype clutches.
9. Gear Shift Lever Housing Assembly
Remove air lines at slave valve and remove
the gear shift lever housing assembly from
transmission.
b. Check tension spring and washer for set
and wear.
c. Check the gear shift lever spade pin and
slot for wear.
d. Check bottom end of gear shift lever for
wear and check slot of yokes and blocks in
shift bar housing for wear at contact points
with shift lever.
a.
a.
4.
Clutch Pedal Shaft and Bores
a. Pry upward on shafts to check wear.
b. If excessive movement is found, remove
clutch release mechanism and check bushings in bores and wear on shafts.
5.
Lubricant
a. Change at specified service intervals.
b. Use only the types and grades as recommended. See LUBRICATION.
6.
Filler and Drain Plugs
a.
7.
Remove filler plugs and check level of lubricant at specified intervals. Tighten filler and
drain plugs securely.
Capscrews and Gaskets
a. Check all capscrews, especially those on
PTO covers and rear bearing covers for
looseness which would cause oil leakage.
See TORQUE RECOMMENDATIONS.
b. Check PTO opening and rear bearing covers
for oil leakage due to faulty gasket.
8.
Gear Shift Lever
a. Check for looseness and free play in housing. If lever is loose in housing, proceed
with Check No. 9.
CHECKS WITH DRIVE LINE DROPPED
10. Universal Joint Companion Flange
or Yoke Nut
a. Check for tightness. Tighten to recommended torque.
11. Output Shaft (Not Shown)
a.
Pry upward against output shaft to check
radial clearance in mainshaft rear bearing.
CHECKS WITH UNIVERSAL JOINT
COMPANION FLANGE OR YOKE
REMOVED
NOTE: If necessary, use solvent and shop rag to
clean sealing surface of companion flange or
yoke. DO NOT USE CROCUS CLOTH, EMERY
PAPER OR OTHER ABRASIVE MATERIALS
THAT WILL MAR SURFACE FINISH.
12. Splines on Output Shaft
(Not Shown)
a. Check for wear from movement and chucking action of the universal joint companion
flange or yoke.
13. Mainshaft Rear Bearing Cover
a. Check oil seal for wear.
PRECAUTIONS
Disassembly
It is assumed in the detailed assembly instructions that the lubricant has been drained from transmission, the
necessary linkage and air lines disconnected and the transmission has been removed from vehicle chassis. Removal of the gear shift lever housing assembly (or remote control assembly) is included in the detailed instructions (Disassembly and Reassembly - Shifting Controls); however, this assembly MUST be detached from shift
bar housing before transmission can be removed.
FOLLOW CLOSELY EACH PROCEDURE IN THE DETAILED INSTRUCTIONS, MAKING USE OF THE TEXT, ILLUSTRATIONS AND PHOTOGRAPHS PROVIDED.
1. BEARINGS - Carefully wash and relubricate all
reusable bearings as removed and protectively
wrap until ready for use. Remove bearings planned
to be reused with pullers designed for this purpose.
2. ASSEMBLIES - When disassembling the various
assemblies, such as the mainshaft, countershaft,
and shift bar housing, lay all parts on a clean
bench in the same sequence as removed. This procedure will simplify reassembly and reduce the
possibility of losing parts.
3. SNAP RINGS - Remove snap rings with pliers designed for this purpose. Snap rings removed in this
manner can be reused, if they are not sprung or
loose.
tershafts, mainshaft, or main drive gear. Special
procedures are required and provided in this manual.
5 CLEANLINESS - Provide a clean place to work. It
is important that no dirt or foreign material enters
the unit during repairs. Dirt is an abrasive and can
damage bearings. It is always good practice to
clean the outside of the unit before starting the
planned disassembly.
6 WHEN USING TOOLS TO MOVE PARTS - Always
apply force to shafts, housings, etc, with restraint.
Movement of some parts is restricted. Never apply
force to the part being driven after it stops solidly.
The use of soft hammers, bars and mauls for all
disassembly work is recommended.
4. INPUT SHAFT - The input shaft can be removed
from transmission without removing the coun-
Inspection
Before reassembling the transmission, check each part carefully for abnormal or excessive wear and damage to
determine reuse or replacement. When replacement is necessary, use only genuine Fuller Transmission parts to
assure continued performance and extended life from your unit.
Since the cost of a new part is generally a small fraction of the total cost of downtime and labor, avoid reusing a questionable part which could lead to additional repairs and expense soon after initial reassembly. To aid
in determining the reuse or replacement of any transmission part, consideration should also be given to the unit’s history, mileage, application, etc.
Recommended inspection procedures are provided in the following checklist.
A. BEARINGS
1.
2.
3.
B. GEARS
Wash all bearings in clean solvent. Check
balls, rollers and raceways for pitting, discoloration, and spalled areas. Replace bearings
that are pitted, discolored, or spalled.
Lubricate bearings that are not pitted, discolored, or spalled and check for axial and radial
clearances.
Replace bearings with excessive clearances.
1.
Check bearing fits. Bearing inner races
should be tight to shaft; outer races slightly
tight to slightly loose in case bore. If bearing
spins freely in bore, however, the case should
be replaced.
2.
Check gear teeth for frosting and pitting.
Frosting of gear tooth faces present no threat
of transmission failure. Often in continued
operation of the unit, frosted gears will “heal”
and not progress to the pitting stage. And in
most cases, gears with light to moderate pitted teeth have considerable gear life remaining and can be reused. But gears with
advanced stage pitting should be replaced.
Check for gears with clutching teeth abnormally worn, tapered, or reduced in length
from clashing in shifting. Replace gears
found in any of these conditions.
PRECAUTIONS
Inspection (cont'd.)
3. Check axial clearance of gears. Where excessive clearance is found, check gear snap ring,
washer, spacer, and gear hub for excessive
wear. Maintain .005” to .012” axial clearance
between mainshaft gears.
C. SPLINES
1. Check splines on all shafts for abnormal wear.
If sliding clutch gears, companion flange, or
clutch hub have worn into the sides of the
splines, replace the specific shaft affected.
D. TOLERANCE/LIMIT WASHERS
1. Check surfaces of all limit washers. Washers
scored or reduced in thickness should be
replaced.
E. REVERSE IDLER GEAR ASSEMBLIES
1. Check for excessive wear from action of roller
bearings.
I.
GEAR SHIFT LEVER HOUSING
ASSEMBLY
1. Check spring tension on shift lever. Replace
tension spring and washer if lever moves too
freely.
2. If housing is disassembled, check spade pin
and corresponding slot in lever for wear. Replace both parts if excessively worn.
J. BEARING COVERS
1. Check covers for wear from thrust of adjacent
bearing. Replace covers damaged from thrust
of bearing outer race.
2. Check bores of covers for wear. Replace
those worn oversize.
K. OIL RETURN THREADS
AND SEALS
1.
Check oil return threads in front bearing
cover. If sealing action of threads has been
destroyed by contact with input shaft, replace
bearing cover.
2.
Check oil seal in rear bearing cover. If sealing
action of lip has been destroyed, replace seal.
F. GRAY IRON PARTS
1. Check all gray iron parts for cracks and breaks.
Replace or repair parts found to be damaged.
Heavy castings may be welded or brazed provided the cracks do not extend into bearing
bores or bolting surfaces. When welding, however, never place the ground so as to allow current to pass through the transmission.
G. CLUTCH RELEASE PARTS
1.
2.
Check clutch release parts. Replace yokes
worn at cam surfaces and bearing carrier
worn at contact pads.
Check pedal shafts. Replace those worn at
bushing surfaces.
H. SHIFT BAR HOUSING ASSEMBLY
1. Check for wear on shift yokes and blocks at
pads and lever slot. Replace excessively worn
parts.
2. Check yokes for correct alignment. Replace
sprung yokes.
3. Check Iockscrews in yokes and blocks.
Tighten and rewire those found loose.
4. If housing has been disassembled, check
neutral notches of shift bars for wear from interlock balls.
L. SLIDING CLUTCHES
1. Check all shift yokes and yoke slots in sliding
clutches for extreme wear or discoloration
from heat.
2. Check engaging teeth of sliding clutches for
partial engagement pattern.
M. SYNCHRONIZER ASSEMBLY
1. Check synchronizer for burrs, uneven and excessive wear at contact surface, and metal
particles.
2. Check blocker pins for excessive wear or
looseness.
3. Check synchronizer contact surfaces on the
auxiliary drive and low range gears for excessive wear.
N. O - R I N G S
1. Check all O-rings for cracks or distortion. Replace if worn.
PRECAUTIONS
Reassembly
Make sure that interiors of case and housings are clean. It is important that dirt and other foreign materials be
kept out of the transmission during reassembly. Dirt is an abrasive and can damage polished surfaces of
bearings and washers. Use certain precautions, as listed below, during reassembly.
1. GASKETS - Use new gaskets throughout the
6. AXIAL CLEARANCES - Maintain original axial
transmission as it is being rebuilt. Make sure all
clearances of .005” to .012” for mainshaft gears.
gaskets are installed. An omission of any gasket
7. BEARINGS - Use of flanged-end bearing drivers is
can result in oil leakage or misalignment of
recommended for the installation of bearings.
bearing covers.
These special drivers apply equal force to both
2. CAPSCREWS - To prevent oil leakage, use Loctite
bearing races, preventing damage to balls/rollers
242 thread sealant on all capscrews. For torque
and races while maintaining correct bearing alignment with bore and shaft. Avoid using a tubular or
ratings, see TORQUE RECOMMENDATIONS.
sleeve-type driver, whenever possible, as force is
3. O-RINGS - Lubricate all O-rings with silicon lubriapplied to only one of the bearing races. See
cant.
TOOL REFERENCE.
4. ASSEMBLY - Refer to the illustrations provided in
8. UNIVERSAL JOINT COMPANION FLANGE OR
the detailed disassembly instructions as a guide
YOKE - Pull the companion flange or yoke tightly
to reassembly.
into place with the output shaft nut, using 450-500
5. INITIAL LUBRICATION - Coat all limit washers
foot-pounds of torque. Make sure the speedomeand splines of shafts with Lubriplate during reaster drive gear or a replacement spacer of the same
sembly to prevent scoring and galling of such
width has been installed. Failure to pull the comparts.
panion flange or yoke tightly into place will permit
the output shaft to move axially with resultant
damage to the rear bearing.
IMPORTANT: REFER TO THE APPROPRIATE ILLUSTRATED PARTS LIST (SPEClFIED BY MODEL SERIES) TO ENSURE THAT PROPER PARTS ARE
USED DURING REASSEMBLY OF THE TRANSMISSION.
CHANGING INPUT SHAFT
Special Procedure
In some cases, it may become necessary to replace the input shaft due to excessive clutch wear on the splines.
Except for removal of the shift bar housing assembly, the input shaft can be removed without further disassembly of the transmission. Removal of the clutch housing is optional.
NOTE: The following illustration and instructions pertain to changing the input shaft ONLY. To change the main
drive gear, disassembly of the front section is required.
Disassembly
1. Remove the gear shift lever housing assembly (or
remote control assembly) from shift bar housing,
if necessary, and the shift bar housing assembly
from transmission case.
2. Remove the front bearing cover and gasket. If necessary, remove the oil seal from cover of models
so equipped.
3. Remove the drive gear bearing nut (left hand
threads) or snap ring from input shaft.
Suggestion: For removal of nut ONLY, engage Iwo
mainshaft sliding clutches into gear to prevent the
mainshaft from rotating.
4. Move the main drive gear assembly as far forward
as possible and remove the drive gear bearing.
5. Remove the spacer from input shaft.
6. From the front of transmission, remove the snap
ring from I.D. of main drive gear using two small
screwdrivers. If mainshaft was previously locked
in two gears, it may become necessary to place
sliding clutches in the neutral position to rotate
input shaft for removal of snap ring.
7. Pull the input shaft forward and from splines of
drive gear.
Reassembly
1. If necessary, install bushing in pocket of input
shaft.
2. Install new input shaft into splines of main drive
gear just far enough to expose snap ring groove
in I.D. of drive gear.
3. Install snap ring in groove of drive gear.
4. install spacer on input shaft.
5. Using a flanged-end driver, install the drive gear
bearing on shaft and into case bore. When applying force to driver, use caution so as not to damage bearing shield.
Suggestion: Engaging the sliding clutch into
main drive gear and blocking it forward will hold
the input shaft forward.
6. When drive gear bearing nut is used, degrease
the threads of input shaft and new nut. DO NOT
REUSE OLD NUT. When snap ring is used, install
the snap ring in groove of input shaft and proceed to #10.
7. Apply Fuller Transmission adhesive sealant
#71204 or equivalent to the cleaned threads of input shaft and nut, using caution so as not to contaminate bearing with sealant.
8. Engage two mainshaft sliding clutches into gear
to prevent the mainshaft from rotating and install
the new drive gear bearing nut, left-hand threads,
on input shaft. Tighten nut with 250-300 Lbs./Ft.
of torque.
Suggestion: To avoid damaging the O.D. of nut,
use the tool specifically designed for this purpose. See TOOL REFERENCE.
9. With a punch and maul, peen the nut into the two
milled slots of input shaft, using caution so as
not to distort O.D. of nut.
10. To facilitate proper reinstallation of the shift bar
housing assembly on case, make sure mainshaft
sliding-clutches are placed in the neutral position.
11. Reinstall the shift bar housing assembly, the
front bearing cover and all other parts and assemblies previously removed, making sure to replace the gaskets used.
AIR SYSTEM
AIR SYSTEM
RANGE SHIFT AIR SYSTEM—ALL MODELS
Operation
The Range Shift Air System consists of the air filter/
regulator, slave valve, a Range Control Valve or Master Control Valve, range cylinder, fittings and
connecting air lines. See Air System Schematics.
CONSTANT AIR from the air filter/regulator is supplied to the “S” or Supply Port of slave valve and
passed through to the INLET or “S” Port of control
valve.
WHILE IN LOW RANGE, the control valve is OPEN
and AIR is returned to slave valve at the “P” or End
Port. This signals the valve to supply AIR in line between the Low Range or “L” Port of slave valve and
the Low Range Port of range cylinder housing. AIR
received at this port moves the range piston to the
rear and causes the auxiliary low range gear to become engaged.
WHILE IN HIGH RANGE, the control valve is
CLOSED and NO AIR is returned to the slave valve.
This signals the slave valve to supply AIR in line between the High Range or “H” Port of valve and the
High Range Port of range cylinder cover. AIR received at this port moves the range piston forward to
engage the auxiliary drive gear with sliding clutch
and bypass the low range gear set.
Range shifts can be made ONLY when the gear
shift lever is in, or passing through, neutral. Thus, the
range desired can be PRESELECTED while the shift
lever is in -a gear position. As the lever is moved
through neutral, the actuating plunger in the shift bar
housing releases the slave valve, allowing it to move
to the selected range position.
Trouble Shooting
If the transmission fails to make a range shift or
shifts too slowly, the fault may be in the Range Shift
Air System or actuating components of the shift bar
housing assembly.
To locate the trouble, the following checks should
be made with normal vehicle air pressure applied to
the system, but with the engine off.
CAUTION: NEVER WORK UNDER A VEHICLE
WHILE ENGINE IS RUNNING as personal injury may
result from the sudden and unintended movement of
vehicle under power.
1. INCORRECT AIR LINE HOOK-UPS
(See Air System Schematics)
With the gear shift lever in neutral, move the control that provides range selection UP and DOWN.
A. If the air lines are crossed between control
valve and slave valve, there will be CONSTANT AIR flowing from the exhaust port of
control valve WHILE IN HIGH RANGE.
B. If the air lines are crossed between the slave
valve and range cylinder, the transmission
gearing will not correspond with the range selection. A LOW RANGE selection will result in
a HIGH RANGE engagement and vice versa.
2. AIR LEAKS
With the gear shift lever in neutral, coat all air
lines and fittings with soapy water and check for
leaks, moving the control that provides range selection UP and DOWN.
A. If there is a steady leak from the exhaust port
of control valve, O-rings and/or related parts
of the control valve are defective.
B. If there is a steady leak from breather of slave
valve: an O-ring in valve is defective, or there
is a leak past O-rings of range cylinder piston.
C. If transmission fails to shift into LOW RANGE
or is slow to make the range shift and the
case is pressurized, see Check No. 7 of this
section.
D. Tighten all loose connections and replace defective O-rings and parts.
3. AIR FILTER/REGULATOR
(See illustration, Page 27.)
With the gear shift lever in neutral, check the
breather of air filter/regulator assembly. There
should be NO AIR leaking from this port. The
complete assembly should be replaced if a
steady leak is found.
Cut off the vehicle air supply to the air filter/
regulator assembly, disconnect the air line at fitting in Supply OUTLET and install an air gage in
opened port. Bring the vehicle air pressure to normal. Regulated air pressure should be 57.5 to 62.5
PSI.
DO NOT ADJUST SCREW AT BOTTOM OF REGULATOR TO OBTAIN CORRECT READINGS. The
air regulator has been PREADJUSTED within the
correct operating limits. Any deviation from these
limits, especially with regulators that have been
in operation for some time, is likely to be caused
by dirt or worn parts. If replacement or cleaning
of the filter element does nothing to correct the
air pressure readings, replace the complete assembly, as the air regulator is nonserviceable.
4. CONTROL VALVE (See Pages 28 and 29.)
With the gear shift lever in neutral, select HIGH
RANGE and disconnect the 1/8" O.D. air line at
the OUTLET or “P” Port of control valve.
AIR SYSTEM
A. When LOW RANGE is selected, a steady blast
of air will flow from opened port. Select HIGH
RANGE to shut off air flow. This indicates the
control valve is operating properly. Reconnect
air line.
B. If control valve does not operate properly,
check for restrictions and air leaks. Leaks indicate defective or worn O-rings.
C. If the air system does not operate accordingly, the slave valve or actuating components
of the shift bar housing assembly are defective.
7. RANGE CYLINDER (Refer to the following
illustration.)
If any of the seals in the range cylinder assembly
are defective, the range shift will be affected.
5. HIGH RANGE OPERATION
With the gear shift lever in neutral, select LOW
RANGE and disconnect the 1/4” I.D. air line at the
port of range cylinder cover. Make sure this line
leads from the High Range or “H” Port of slave
valve.
A. Leak at either O-ring A results in complete
failure to make a range shift; steady flow of
air from breather of slave valve in both
ranges.
A. When HIGH RANGE is selected, a steady
blast of air should flow from disconnected
line. Select LOW RANGE to shut off air flow.
C. Leak at O-ring C results in a slow shift to
LOW RANGE; pressurizing of transmission
case.
B. Leak at gasket B results in a steady flow of air
to atmosphere while in HIGH RANGE.
B. Move the shift lever to a gear position and select HIGH RANGE. There should be NO AIR
flowing from disconnected line. Return the
gear shift lever to the neutral position. There
should now be a steady flow of air from disconnected line. Select LOW RANGE to shut
off air flow and reconnect air line.
C. If the air system does not operate accordingly, the slave valve or actuating components
of the shift bar housing assembly are defective.
IMPORTANT: RANGE PRESELECTION
The plunger pin, located in case bore between
the slave valve and actuating plunger of shift bar
housing, prevents the slave valve from operating
while the shift lever is in a gear position. When
the lever is moved to or through the neutral position, the pin is released and the salve valve becomes operational.
Cut 7420-4/84
6. LOW RANGE OPERATION
With the gear shift lever in neutral, select HIGH
RANGE and disconnect the 1/4” I.D. air line at the
fitting on range cylinder housing. Make sure this
line leads from the Low Range or “L” Port of
slave valve.
A. When LOW RANGE is selected, a steady blast
of air should flow from disconnected line. Select HIGH RANGE to shut off air flow.
B. Move the shift lever to a gear position and select LOW RANGE. There should be NO AIR
flowing from disconnected line. Return the
gear shift lever to the neutral position. There
should now be a steady flow of air from disconnected line. Select HIGH RANGE to shut
off air flow and reconnect air line.
Range Cylinder Assembly—All Models
AIR SYSTEM
AIR FILTER/REGULATOR ASSEMBLY
Cut 6141 -3/86
The air filter contains a replaceable filter element which can be removed by turning out the end cap. This element should be cleaned at each oil change, or more often under high humidity conditions. Replace if necessary.
SLAVE VALVES
PISTON-TYPE
POPPET-TYPE
PISTON-TYPE
\
Refer to the drawing for disassembly and reassembly of the piston-type slave valve assemblies. Should the poppet-type slave valve assembly prove to be defective, replace the complete assembly, as it is non-serviceable.
The actuating components used with these valve assemblies are non-interchangeable. Failure to use the correct
plunger pin, spring, and alignment sleeve during installation on the transmission will cause hard shifting in Low
Range gears.
AIR SYSTEM
RANGE VALVE A-3546
NOTE: This valve provides range
selection ONLY. When equipped
on 15-Speed Models, the
dash-mounted Deep Reduction
Valve is required to provide
deep reduction selections.
OUTLET (BLACK AIR LINE)
Cut 6155-1/84
Removal and Disassembly
Reassembly and Installation
1. Disconnect the air lines and loosen clamp se- 1 . Refer to the drawing for proper reassembly. Use a
VERY SMALL amount of silicone lubricant on the
curing the valve to gear shift lever. Remove valve.
O-rings to avoid clogging ports. A small amount of
2. Remove the four screws to separate the front and
grease on the position springs and balls will help
rear housings and remove the slide and two sets
to hold them in place during reassembly.
of position springs and balls.
2. Install the air lines with their sheathing and O3. Remove the seal, insert valve O-ring and spring
rings on the gear shift lever.
from rear housing.
3. Secure the valve on gear shift lever with mounting
4. If necessary, remove the two felt seals. Punch out
clamp. The control knob should face to the front
the roll pin to remove the control knob from slide.
and be approximately 6“ below the centerline of
ball grip.
4. Attach the air lines.
AIR SYSTEM
RANGE VALVE A-501 O
ROADRANGER VALVE
ASSEMBLY
Removal and Disassembly
Reassembly and Installation
1. Remove two screws holding bottom cover to valve
and slide cover down gearshift lever to expose air
line fittings. Disconnect air lines.
1. Refer to the drawing for proper reassembly. Use a
VERY SMALL amount of silicone lubricant on the
O-rings to avoid clogging ports. A small amount of
grease on the position springs and balls will help
to hold them in place during reassembly.
2. Loosen jam nut and turn control valve from gear
shift lever.
3. Pry medallion from recess in top cover.
2. Reinstall control valve on gear shift lever and
tighten jam nut.
4. Turn out the two screws to remove the top cover
from valve housing.
3.. Attach air lines and reinstall bottom cover.
5. Turn out the two screws in side of valve housing to
separate the housing.
6. Remove the Range Preelection Lever from left
housing and the position balls and guide from
lever.
7. If necessary, remove spring and O-ring from bores
in left housing.
8. If necessary, remove springs, O-ring and sleeve
from bores in right housing.
AIR SYSTEM
DEEP REDUCTION AIR SYSTEM:
8-SPEED “LL” MODELS ONLY
Operation
In addition to the various components of the Range
Shift Air System, the Deep Reduction Air System utilizes a reduction cylinder and a separate dashmounted Deep Reduction Valve OR the Master Control Valve A-5015.
CONSTANT AIR from the air filter/regulator assembly is supplied to the reduction cylinder at the port
on right side of cylinder cover. See Air System Schematics.
With the Deep Reduction Lever in the “OUT” position, the valve is OPENED and AIR is supplied to the
Center Port of cylinder cover, moving the reduction
piston forward to disengage deep reduction gearing.
With the lever moved to the “IN” position, the valve
is CLOSED and NO AIR is supplied to the Center
Port. CONSTANT AIR from the air filter/regulator assembly moves the reduction piston rearward to engage reduction gearing.
WHILE IN THE LO SPEED GEAR POSITION, the
button can be moved FORWARD to operate in LO-LO.
The “SP” Port of valve is OPENED when deep reduction selection is made, supplying AIR to the Center
Port of cylinder cover.
Button FORWARD
(“SPY’ Port OPENED)
NOTE: WHILE IN HIGH RANGE, the mechanical interlock of Master Control Valve prevents
movement of Deep Reduction Button to the
FORWARD position.
Trouble Shooting
Lever to “OUT”
(Valve OPENED)
Lever to “IN”
(Valve CLOSED)
For models equipped with the Master Control
Valve A-5015, AIR is supplied to the built-in deep reduction valve ONLY WHILE IN LOW RANGE from tee
fitting at the Low Range or “L” Port of slave valve.
The insert valve (see page 37) MUST be installed in
cylinder cover to provide the proper air flow needed
to move the reduction piston in the cylinder. See
schematic provided on Page 32.
NOTE: The insert valve is NOT USED in the reduction cylinder cover of models equipped with
the dash mounted Deep Reduction Valve.
With the Deep Reduction Button in the REARWARD position, the “SP” Port of control valve is
CLOSED and NO AIR is supplied to the Center Port
of cylinder cover.
Button REARWARD
(“SPY’ Port CLOSED)
If the transmission fails to shift or shifts too slowly
to or from LO-LO, the fault may be in the Deep Reduction Air System or related components of the
Range Shift Air System.
To locate the trouble, the following checks should
be made with normal vehicle air pressure supplied to
the system, but with the engine off. See CAUTION,
Page 25.
NOTE: It is assumed that correct PSI readings were
obtained from the air filter/regulator and all
air lines have been checked for leaks.
For Models Equipped with
the Deep Reduction Valve . . .
1. Air Supply (See Air System Schematics.)
With the gear shift lever in neutral, loosen the
connection at the INLET (End Port) of Deep Reduction Valve until it can be determined that
CONSTANT AIR is supplied to valve. Reconnect
air line.
If there is NO AIR, check for a restriction in
line between the Deep Reduction Valve and slave
valve, making sure this line is connected to tee
fitting at the Supply or “S” Port of slave valve.
AIR SYSTEM
2. Deep Reduction Valve (See Air System Schematics.)
With the gear shift lever in neutral, disconnect
the air line leads from OUTLET of Deep Reduction Valve.
A. WHILE IN LOW RANGE, move the Deep Reduction Valve Lever to the “IN” position.
There should be NO AIR flowing from disconnected line.
B. Move the valve lever to the “OUT” position.
There should now be CONSTANT AIR flowing
from disconnected line. Return the valve lever
to the “IN” position to shut off air flow and reconnect air line.
HOUSING
3. Reduction Cylinder (Refer to the following
illustration.)
If any of the seals in the reduction cylinder assembly are defective, the deep reduction shift
will be affected. The degree of air lost will govern
the degree of failure, from slow shifting to complete shift failure.
A. Leak at O-ring A results in a slow shift to
engage deep reduction gearing; pressurizing
of transmission case; deep reduction gearing
can be disengaged.
B. Leak at O-ring B results in slow shifting or
complete failure to engage and disengage
deep reduction gearing; steady flow of air
from exhaust port of Deep Reduction Valve
when lever is in the “IN” position.
C. Leak at gasket C results in a slow shift to disengage deep reduction gearing; steady flow
of air to atmosphere.
CONSTANT AIR
from Air Filter/Regulator
Cut 7440-4/84
REDUCTION CYLINDER ASSEMBLY
(Models equipped with Deep Reduction Valve ONLY.)
AIR SYSTEM
For Models Equipped with
the Master Control Valve A-5015 . . .
1. Air Supply (See schematic below.)
With the gear shift lever in neutral, select LOW
RANGE and loosen the connection at the “H”
Port of control valve until it can be determined
that AIR is supplied to valve. Reconnect air line.
LO-LO
If there is NO AIR, check for a restriction in the
1/8" O.D. air line between the control valve and
slave valve, making sure this line is connected to
tee fitting at the Low Range or “L” Port of slave
valve.
NOTE: ARROWS INDICATE DIRECTION OF AIR FLOW.
SHADED AREAS INDICATE CHARGED LINES.
AIR SYSTEM
2. Roadranger Valve (See Page 34 and schematic on
preceding page.)
With the gear shift lever in neutral, disconnect
the 1/8” O.D. air line at the Center Port of reduction cylinder cover, making sure this line leads
from the “SP” Port of control valve.
A. WHILE IN LOW RANGE, move the Deep Reduction Button FORWARD. There should be
AIR flowing from disconnected line. Move the
button REARWARD to shut off air flow and reconnect air line.
B. If the preceding conditions did not exist, the
control valve is defective, or there is a restriction in the air lines.
3. Reduction Cylinder (Refer to the following illustration.)
If any of the seals in the reduction cylinder assembly are defective, the deep reduction shift
will be affected. The degree of air lost will govern
the degree of failure, from slow shifting to complete shift failure.
A. Leak at O-ring A results in a slow shift to
engage deep reduction gearing; pressurizing
of transmission case; deep reduction gearing
can be disengaged.
B. Leak at O-ring B results in slow shifting or
complete failure to engage and disengage
deep reduction gearing; steady flow of air
from exhaust port of control valve and/or cylinder cover when Deep Reduction Button is in
the FORWARD position.
C. Leak at gasket C results in a slow shift to disengage deep reduction gearing; steady flow
of air to atmosphere.
4. Insert Valve (See page 37.)
Any constant flow of air from exhaust port of cylinder cover usually indicates a faulty insert valve.
Exhaust should occur ONLY BRIEFLY when Deep
Reduction Button is moved FORWARD WHILE IN
LOW RANGE.
A faulty insert valve, leaking at the O-rings of
valve O.D. or from inner seals will result in shift
failure. Two indications of defective O-rings or
seals are:
A. CONSTANT AIR flowing from exhaust port of
cylinder cover.
B. CONSTANT AIR flowing from exhaust port
“E” of control valve WHILE DEEP REDUCTION BUTTON IS REARWARD (providing the
control valve is operating properly).
The three O-rings in position on valve O.D. can be
replaced. However, if an inner seal is damaged,
the complete assembly MUST be replaced.
AIR SYSTEM
ROADRANGER VALVE A-5015
Removal and Disassembly
1. Remove two screws holding bottom cover to valve
and slide cover down gearshift lever to expose air
line fittings. Disconnect air lines.
2. Loosen jam nut and turn control valve from gear
shift lever.
3. Pry medallion from recess in top cover.
4. Turn out the two screws to remove the top cover
from valve housing.
5. Remove the actuator button from valve housing
and the spring retainer, springs, seal & detent
parts from actuator and/or valve housing.
6. Turn out the two screws in side of valve housing to
separate the housing.
7. Remove the Range Preelection Lever from left
housing and the position balls and guide from
lever.
8. If necessary, remove springs, O-ring and retainer
from bores in right housing.
Reassembly and Installation
1. Refer to the drawing for proper reassembly. Use a
VERY SMALL amount of silicone lubricant on the
O-rings to avoid clogging ports. A small amount of
grease on the position springs and balls will help
to hold them in place during reassembly.
2.
Reinstall control valve on gear shift lever and
tighten jam nut.
3. . Attach air lines and reinstall bottom cover.
AIR SYSTEM
SPLITTER SHIFT AIR SYSTEM: 13-SPEED SPLITTER
MODELS ONLY
Operation
Trouble Shooting
In addition to the various components of the Range
Shift Air System, the Splitter Shift Air System utilizes
a splitter cylinder and a separate lever-mounted Splitter Selector Valve OR the Roadranger Control Valve A4900. See Air System Schematics.
CONSTANT AIR from the air filter/regulator assembly is supplied to the splitter cylinder at the port on
right side of cylinder cover. The Insert valve installed
in cover (see Page 37) provides the proper air flow
needed to move the splitter piston in the cylinder
(rearward to engage splitter gearing; forward to disengage splitter gearing).
WHILE IN HIGH RANGE ONLY, AIR needed to
make the splitter selection and complete the shift is
supplied to the control valve from tee fitting at the
High Range or “H” Port of slave valve. When the
splitter selection is made, the AIR passes through
the control valve and is supplied to the Center Port of
cylinder cover.
With Splitter Control Button in the “DIR.”/
REARWARD position, the “D” or “SP” Port of control
valve is CLOSED and NO AIR is supplied to the Center Port of Splitter cylinder cover.
If the transmission fails to shift or shifts too slowly
to or from the “split” position, the fault may be in the
Splitter Shift Air System or related components of
the Range Shift Air System.
To locate the trouble, the following checks should
be made with normal vehicle air pressure supplied to
the system, but with the engine off. See CAUTION,
Page 25.
NOTE: It is assumed that correct PSI readings were
obtained from the air filter/regulator and ail
air lines have been checked for leaks.
Button in “DIR.”
(“D” Port CLOSED)
Button REARWARD
(“SP” Port CLOSED)
WHILE IN HIGH RANGE, the button can be moved
FORWARD to operate in UNDERDRIVE or OVERDRIVE. The “D” or “SP” Port of valve is OPENED
when splitter selection is made, supplying AIR to the
Center Port of Splitter cylinder cover.
Button in “U. D.” or “O.D.”
(“D” Port OPENED)
Button FORWARD
(“SP” Port OPENED)
NOTE: WHILE IN LOW RANGE, the mechanical interlock of Master Valve prevents movement of
Splitter Control Button to the FORWARD position.
1. Air Supply (See Air System Schematics.)
With the gear shift lever in neutral, select HIGH
RANGE and loosen the connection at the “S”
Port of Splitter Selector Valve or “H” Port of Master Control Valve until it can be determined that
AIR is supplied to valve. Reconnect air line.
If there is NO AIR, check for a restriction in the
1/8" O.D. air line between the control valve and
slave valve, making sure this line is connected to
tee fitting at the High Range or “H” Port of slave
valve.
2. Selector or Roadranger Valve (See Pages 38-39
and Air System Schematics.)
With the gear shift lever in neutral, disconnect
the 1/8” O.D. air line at the Center Port of splitter
cylinder cover, making sure this line leads from
the “D” Port of Splitter Selector Valve or “SP”
Port of Master Valve.
A. WHILE IN HIGH RANGE, move the Splitter
Control Button FORWARD. There should be
AIR flowing from disconnected line. Move the
button REARWARD to shut off air flow and reconnect air line.
B. If the preceding conditions did not exist, the
control valve is defective, or there is a restriction in the air lines.
3. Splitter Cylinder. (Refer to the following illustration.)
If any of the seals in the splitter cylinder assembly are defective, the splitter shift will be affected. The degree of air lost will govern the
degree of failure, from slow shifting to complete
shift failure.
A. Leak at O-ring A results in a slow shift to
engage splitter gearing; pressurizing of transmission case; splitter gearing can be disengaged.
AIR SYSTEM
B. Leak at O-ring B results in slow shifting or
complete failure to engage and disengage
splitter gearing; steady flow of air from exhaust port of control valve and/or cylinder
cover when Splitter Control Button is in the
FORWARD position.
C. Leak at gasket C results in a slow shift to disengage splitter gearing; steady flow of air to
atmosphere.
4. Insert Valve (See Page 37).
Any constant flow of air from exhaust port of cylinder cover usually indicates a faulty insert valve.
Exhaust should occur ONLY BRIEFLY when Splitter Control Button is moved FORWARD WHILE IN
HIGH RANGE.
A faulty insert valve, leaking at the O-rings of
valve O.D. or from inner seals will result in shift
failure. Two indications of defective O-rings or
seals are:
A. CONSTANT AIR flowing from exhaust port of
cylinder cover.
B. CONSTANT AIR flowing from Exhaust Port
“E” of control valve WHILE SPLITTER CONTROL BUTTON IS REARWARD (providing the
control valve is operating properly).
The three O-rings in position on valve O.D. can be
replaced. However, if an inner seal is damaged,
the complete assembly MUST be replaced.
CONSTANT AIR
SPLITTER CYLINDER ASSEMBLY
(13-Speed Splitter Models ONLY)
AIR SYSTEM
INSERT VALVE: 8-SPEED "LL" MODELS
(EQUIPPED WITH ROADRANGER VALVE A-5015)
AND 13-SPEED SPLITTER MODELS
The insert valve is a self-contained 1-3/16" valve assembly located in the reduction or splitter cylinder
cover. It CANNOT be disassembled except for the
three O-rings on outer diameter. The O-rings provide
a stationary seal and do not move in cylinder.
CENTER PORT,
SIGNAL LINE FROM
CONTROL VALVE
“SP” PORT.
INSERT VALVE
RETAINING NUT
BOTTOM EXHAUST PORT
Cut 7450-4/84
LOW RANGE AND HIGH RANGE OR DIRECT
When installing the insert valve in bottom edge of
cover, apply Fuller #71206 silicone lubricant or its
equivalent to O-rings and cylinder walls. Install valve
in bore with flat surface to the inside. When installing the special valve retaining nut, apply Fuller
#71204 adhesive/sealant or its equivalent to threads
and tighten. See TORQUE RECOMMENDATIONS.
Travel of the small insert valve piston is only 3/16"
As shown in the illustrations below, when NO AIR is
applied to the top side of valve piston, CONSTANT
AIR supplied from the regulator passes freely
through the insert valve and to the backside of cylinder piston, moving the yoke bar forward to disengage
deep reduction or splitter gearing (LOW RANGE AND
HIGH RANGE OR DIRECT). When AIR is applied to
the top side of valve piston through signal line, the
piston moves down to cut off air supplied to the
backside of cylinder piston. This air is exhausted out
bottom port of cover when CONSTANT AIR supplied
from the regulator is directed to the frontside of cylinder piston, moving the yoke bar rearward to engage
deep reduction or splitter gearing (LO-LO AND
UNDERDRIVE/OVERDRIVE).
LO-LO OR UNDERDRIVE/OVERDRIVE
AIR SYSTEM
SELECTOR VALVE
Removal and Disassembly
1. Disconnect all air lines to the valve. Loosen the
jam nut securing the valve to gear shift lever and
turn the valve from lever.
Reassembly and Installation
1 . Refer to the drawing for proper reassembly. Use a
VERY SMALL amount of silicone lubricant on the
O-rings to avoid clogging ports.
2. Turn out the three screws from bottom of valve 2 . Install the air lines with their sheathing and Obody and remove the top cover.
rings on the gear shift lever.
3. Remove the actuator (control button) from cover 3 . Install the jam nut and valve on lever. Use the nut
to lock the valve in position with control button on
post and the springs, seals, O-rings and detent
parts from actuator.
driver’s side.
4. Connect the 1/8" O.D. air line from Center Port of
splitter cylinder cover to “D” Port; air line from tee
fitting at the High Range or “H” Port of slave valve
to “S” Port.
AIR SYSTEM
ROADRANGER VALVE A-4900
ROADRANGER VALVE
ASSEMBLY
Cut 6145 G-2/88
Removal and Disassembly
1. Remove two screws holding bottom cover to valve
and slide cover down gear shift lever to expose air
line fittings. Disconnect air lines.
2. Loosen jam nut and turn control valve from gear
shift lever.
3. Pry medallion from recess in top cover.
4. Turn out the two screws to remove the top cover
from valve housing.
5. Remove the actuator button from valve housing
and the spring retainer, springs, seal and detent
parts from actuator and/or valve housing.
6. Turn out the two screws
separate the housing.
of valve housing to
7. Remove the Range Preelection Lever from left
housing and the position balls and guide from
lever.
8. If necessary, remove the spring and O-ring from
bores in left housing.
9. If necessary, remove the springs, O-ring and retainer from bores in right housing.
Reassembly and Installation
1. Refer to the drawing for proper reassembly. Use a
VERY SMALL amount of silicone lubricant on the
O-rings to avoid clogging ports. A small amount of
grease on the position springs and balls will help
to hold them in place during reassembly
2 . Reinstall control valve on gear shift lever and
tighten jam nut.
3 . Attach air lines and reinstall bottom cover.
RT, RTO, & RTX XX607LL: XX608LL: and XX615 Models
Deep Reduction
Slave Valve
Identification
A-5010 Roadranger
Valve
A-3546 Range
Valve
A-4688 Valve
Down
Down
OR
A-5000 Valve
Outlet
19470 Valve
P
P
S
S
19470 or A-5000
Slave Valve
A-4688 Slave Valve
R
P
R
S
HI
OR
P
S
HI
LO
LO
Schematic
Air Filter/Regulator
Assembly
LO
N
WHEN IN LOW
RANGE
Air to
Housing
Port
In
DU
P R E CT I
E E SHIFT ONLY O
OUT
Air from
Vehicle
Source
Range Cylinder Assembly
Deep Reduction Valve
D
For all questions
concerning
removal and
replacement,
refer to Eaton
Service and Parts
Literature.
IN
DO NOT
PRE-SELECT
R
Reduction
Cylinder
Assembly
Constant Air
No Air
No Air
HI
RT, RTO, & RTX XX607LL: XX608LL: and XX615 Models
Range—LO
A-3546 Range
Valve
Slave Valve
Identification
A-5010 Roadranger
Valve
A-4688 Valve
Down
Down
OR
A-5000 Valve
Outlet
19470 Valve
P
P
S
19470 or A-5000
Slave Valve
A-4688 Slave Valve
R
S
R
P
S
HI
OR
P
S
HI
LO
PR
E DUCT
Air to
Housing
Port
Out
IO
SHIFT ONLY
WHEN IN LOW
RANGE
N
EE
OUT
Air from
Vehicle
Source
Range Cylinder Assembly
Deep Reduction Valve
D
Air Filter/Regulator
Assembly
LO
IN
LO
DO NOT
PRE-SELECT
R
Reduction
Cylinder
Assembly
Constant Air
No Air
HI
Schematic
For all questions
concerning
removal and
replacement,
refer to Eaton
Service and Parts
Literature.
RT, RTO, & RTX XX607LL: XX608LL: and XX615 Models
Range—HI
Slave Valve
Identification
A-5010 Roadranger
Valve
A-3546 Range
Valve
A-4688 Valve
Up
Up
OR
A-5000 Valve
Outlet
19470 Valve
P
P
S
S
19470 or A-5000
Slave Valve
A-4688 Slave Valve
R
P
R
S
HI
OR
P
S
HI
LO
LO
Schematic
EE
OUT
Air from
Vehicle
Source
Range Cylinder Assembly
Deep Reduction Valve
D
Air Filter/Regulator
Assembly
PR
E DUCT
SHIFT ONLY
WHEN IN LOW
RANGE
No Air
Out
IO
N
For all questions
concerning
removal and
replacement,
refer to Eaton
Service and Parts
Literature.
IN
LO
DO NOT
PRE-SELECT
R
Reduction
Cylinder
Assembly
Constant Air
Air to
Cover
Port
HI
7L: 8: 9: and 10 Speed (2-Speed Auxiliary)
Range—LO
A-3546 Range
Valve
Slave Valve
Identification
A-5010 Roadranger
Valve
A-4688 Valve
Down
OR
Down
Outlet
A-5000 Valve
P
P
S
19470 Valve
S
19470 or A-5000
Slave Valve
A-4688 Slave Valve
S
P
HI
OR
S
P
HI
LO
Air Filter/Regulator
Assembly
LO
Range Cylinder
Assembly
Air to Housing
Port
LO
Air from
Vehicle
Source
No Air
Constant Air
HI
Schematic
For all questions
concerning
removal and
replacement,
refer to Eaton
Service and Parts
Literature.
7L: 8: 9: and 10 Speed (2-Speed Auxiliary)
Range—HI
Slave Valve
Identification
A-5010 Roadranger
Valve
A-3546 Range
Valve
A-4688 Valve
Up
Up
OR
A-5000 Valve
Outlet
19470 Valve
P
P
S
S
19470 or A-5000
Slave Valve
A-4688 Slave Valve
S
P
HI
OR
S
HI
LO
Schematic
For all questions
concerning
removal and
replacement,
refer to Eaton
Service and Parts
Literature.
P
Air Filter/Regulator
Assembly
LO
Range Cylinder
Assembly
No Air
LO
Air from
Vehicle Source
Air to Cover
Port
Constant Air
HI
RT, RTO, & RTOO XX613 and XX813 Models
Range—LO
A-3546 Range Valve
Selector Valve
Slave Valve
Identification
A-4900 Roadranger
Valve
A-4688 Valve
Dir
Down
DIR
Down
OR
Rearward
S
A-5000 Valve
D
®
Fuler
l
Transmissions
Outlet
P
H/L P
H SP
S
SP
19470 Valve
19470 or A-5000
Slave Valve
A-4688 Slave Valve
S
S
H/L
P
H/L
OR
HI
HI
S
P
LO
Schematic
For all questions
concerning
removal and
replacement,
refer to Eaton
Service and Parts
Literature.
LO
Air Filter/Regulator
Assembly
Range Cylinder Assembly
Splitter Cylinder
Assembly
Air to
Housing
Port
LO
Air from
Vehicle
Source
No Air
SP
Constant Air
Insert
Valve
No Air
HI
RT, RTO, & RTOO XX613 and XX813 Models
Range—HI/Splitter—
Direct
A-4688 Valve
Dir
Up
Slave Valve
Identification
A-4900 Roadranger
Valve
A-3546 Range Valve
Selector Valve
DIR
Up
OR
Rearward
S
A-5000 Valve
D
®
Fuler
l
Transmissions
Outlet
P
S
H/L P
H SP
SP
19470 Valve
19470 or A-5000
Slave Valve
A-4688 Slave Valve
S
S
H/L
P
H/L
OR
HI
HI
LO
S
P
LO
Air Filter/Regulator
Assembly
Range Cylinder Assembly
Splitter Cylinder
Assembly
LO
Air from
Vehicle
Source
No Air
SP
Constant Air
Insert Air to Cover
Valve Port
HI
No Air
Schematic
For all questions
concerning
removal and
replacement,
refer to Eaton
Service and Parts
Literature.
RT, RTO, & RTOO XX613 and XX813 Models
Range—HI/Splitter—Underdrive or Overdrive
A-3546 Range Valve
Selector Valve
U.D./O.D.
Up
Slave Valve
Identification
A-4900 Roadranger
Valve
A-4688 Valve
DIR
Up
OR
Forward
S
A-5000 Valve
D
®
Fuler
l
Transmissions
Outlet
P
S
H/L P
H SP
SP
19470 Valve
19470 or A-5000
Slave Valve
A-4688 Slave Valve
S
S
H/L
P
H/L
OR
HI
HI
LO
S
P
Schematic
For all questions
concerning
removal and
replacement,
refer to Eaton
Service and Parts
Literature.
LO
Air Filter/Regulator
Assembly
Range Cylinder Assembly
Splitter Cylinder
Assembly
No Air
LO
Air from
Vehicle
Source
SP
Constant Air
Insert
Valve
Air to Cover
Port
HI
DISASSEMBLY AND REASSEMBLY
SHIFTING CONTROLS
AIR SYSTEM
A. Removal of Air Control
NOTE: For removal and disassembly of models
also equipped with the Countershaft Actuator
Valve, see OPTIONS.
2. For models equipped with the Roadranger Valve
A-5015 or A-4900, also disconnect the 1/8" O.D. air
hose line at the "L" or Low Range Port of slave
valve (left); and the 1/8" O.D. air line at the Center
Port of reduction cylinder/splitter cylinder cover
(right).
NOTE: If desired, the gear shift lever housing assembly can now be removed from shift bar
housing.
1.
Disconnect the two 1/8" O.D. air line or at the "S"
or Supply Port and the "P" or End Port of slave
valve on transmission case.
NOTE: For models equipped with the A-3546 or
Roadranger Valve A-5010, the gear shift lever housing assembly can now be removed from shift bar
housing.
DISASSEMBLY AND REASSEMBLY
SHIFTING CONTROLS
1. Disconnect the two 1/8" O.D. air lines at the Range
Valve of models so equipped (left). Remove the ball
grip, loosen the valve mounting clamp and remove
the valve, mounting clamp, air lines, sheathing and
O-rings from gear shift lever (right).
NOTE: For disassembly and reassembly of Range
Valve, see Page 28.
5. Slide the cover down shift lever to expose valve
ports and disconnect the 1/8" O.D. air lines.
4. For models so equipped, turn out the two mounting
screws in valve cover.
6. Loosen the jam nut and turn the Valve and nut from
gear shift lever. Remove the valve cover, air lines,
sheathing and O-rings from lever.
DISASSEMBLY AND REASSEMBLY
SHIFTING CONTROLS
B. Removal of Air Filter
Regulator Assembly
1. Disconnect and remove the 1/4" I.D. air hose between the slave valve and air filter/regulator
assembly.
3. Turn out the two capscrews and remove the air filter/regulator assembly.
NOTE: For disassembly and reassembly of Air Filter/Regulator Assembly, see Page 27.
C. Removal of Slave Valve
2. For 8-Speed "LL" or 13-Speed Models, also disconnect the 1/4" I.D. air hose between the air filter/
regulator assembly and reduction/splitter cylinder.
1. Disconnect and remove the 1/.4" I.D. air hose between the slave valve and Low Range Port in housing of range cylinder.
DISASSEMBLY AND REASSEMBLY
SHIFTING CONTROLS
2. Disconnect and remove the 1/4" I.D. air hose between the slave valve and High Range Port in
cover of range cylinder.
5. Remove the spring and plunger pin from bore in
transmission case. Remove slave valve gasket.
3. Turn out the four retaining capscrews and remove
slave valve from transmission case.
6. If necessary, remove the air hose fittings from
slave valve.
NOTE: For disassembly and reassembly of pistontype Slave Valve Assembly ONLY, see Page 27.
4. Remove the hat-type alignment sleeve from bore
in slave valve.
DISASSEMBLY AND REASSEMBLY
SHIFTING CONTROLS
A. Removal and Disassembly
1.
Turn out the four retaining capscrews, jar lightly
to break gasket seal and remove the gear shift
lever housing and gasket from shift bar housing.
NOTE: Remote control housings are removed
from shift bar housing in the same manner. For
disassembly and reassembly of LRC Assemblies,
see Illustrated Parts List No. P-541. For disassembly and reassembly of SRC Assemblies, see
Illustrated Parts List No. P-515.
2. Remove the boot from gear shift lever and secure
assembly in vise with bottom of housing up. Use
a large screwdriver to twist between the spring
and housing, forcing the spring from under the
lugs in housing. Do one coil at a time.
DISASSEMBLY AND REASSEMBLY
SHIFTING CONTROLS
B. Reassembly of Gear Shift Lever
Housing Assembly
3. Remove the tension spring, washer and gear shift
lever from housing.
1. With the gear shift lever housing secured in vise
as during disassembly, install the spade pin in
bore of housing tower. If previously removed, install the O-ring in tower groove.
4. Remove the spade pin from bore in housing
tower. If necessary, remove the O-ring from
groove inside tower.
2. Position the gear shift lever in housing with
spade pin in lever ball slot and install the tension
spring washer over ball, dished-side up.
DISASSEMBLY AND REASSEMBLY
SHIFTING CONTROLS
3. Install the tension spring under lugs in housing,
seating one coil at a time. Use of a spring driving
tool is recommended.
4. Remove the assembly from vise and install the
rubber boot over gear shift lever and against
housing.
DISASSEMBLY AND REASSEMBLY
SHIFTING CONTROLS
SHIFT BAR HOUSING ASSEMBLY
A. Removal and Disassembly
NOTE: For models equipped with an Oil Pump
and/or Cooler Assemblies, make sure to disconnect the lube line at fitting on shift bar housing
prior to proceeding with the following instructions.
1. Turn out the retaining capscrews, jar to break
gasket seal and lift the shift bar housing from
case. Remove gasket.
NOTE: During disassembly, lay all parts on a
clean bench in order of removal from housing to
facilitate reassembly. Shift bars not being removed MUST be kept in the neutral position or interlock parts will lock bars. For disassembly and
reassembly of "X" and "F" model assemblies,
see Illustrated Parts List.
2. Tilt the assembly and remove the three sets of
tension springs and balls from bores in top of
housing.
DISASSEMBLY AND REASSEMBLY
SHIFTING CONTROLS
3.
Mount the assembly in a vise with plunger-side
up and secure on housing flange. (The front of
housing will be to the left.) For models so
equipped, cut lockwire and turn out the retaining
capscrews to remove oil trough from housing.
NOTE: Starting with the upper shift bar, move all
bars to the right and out bore of rear boss. Cut
lockwire and remove Iockscrews from each bar
just prior to their removal from housing.
5. Move the 1st-2nd speed shift bar to the rear of
housing, removing the yoke and block from bar.
As the neutral notch in bar clears the rear boss,
remove the small interlock pin from bore at
notch.
6. Remove the actuating plunger from bore at top of
center boss.
4. Move the 3rd-4th speed shift bar to the rear of
housing, removing the yoke and block from bar.
DISASSEMBLY AND REASSEMBLY
SHIFTING CONTROLS
B. Reassembly of Shift Bar
Housing Assembly
7. Move the short LO-Reverse speed shift bar to the
rear of housing, removing the yoke from bar. As
the shift bar is removed from housing, two %Ò interlock balls will drop from bottom bore of rear
boss.
8. If necessary, remove the plug, spring and reversestop plunger from bore in LO-Reverse speed shift
yoke.
1. If previously removed, install the reverse-stop
plunger in LO-Reverse shift yoke, making sure
plunger is fully seated in bore at yoke slot.
2. Install the spring in bore of yoke and onto shank
of plunger.
DISASSEMBLY AND REASSEMBLY
SHIFTING CONTROLS
3. Install the plug and tighten to compress spring
(left). Back the plug out 1-1 1/2 turns and stake
plug through the small hole in yoke (right).
5. Holding shank of plunger, install the actuating
plunger in bore at top of center boss.
4.
With the shift bar housing secured in vise as
during disassembly, hold notched-end of short
LO-Reverse speed shift bar and install in lower
bore of housing bosses, positioning the yoke on
bar between the bosses. Install the yoke lockscrew, tighten and wire securely.
NOTE: Start with the lower shift bore of rear boss
and move to the left (front of housing). Keep bars
in the neutral position during installation. DO
NOT EXCEED the recommended torque ratings
for yoke Iockscrews as over-tightening may distort shift bars.
6. Install one 3/4" interlock ball in bore at top of rear
boss. This ball rides between LO-Reverse and 1st2nd speed shift bars.
DISASSEMBLY AND REASSEMBLY
SHIFTING CONTROLS
7. Holding notched-end of bar, install the 1st-2nd
speed shift bar in middle bore of housing boss,
positioning the shift block on bar between the
center and rear bosses; and the yoke on bar between the front and center bosses, long hub to
the front of housing. Just prior to inserting
notched-end of bar in rear boss, install the small
interlock pin VERTICALLY in bore at neutral
notch. Install the block and yoke Iockscrews,
tighten and wire securely.
NOTE: It is necessary that interlock pin remain in
a vertical position during reassembly as rotation
of the bar will cause pin to jam in tension spring
bores.
Holding notched-end of bar, install the 3rd-4th
speed shift bar in upper bore of housing boss, positioning the shift block on bar between the center and rear bosses; and the yoke on bar between
the front and center bosses, long hub to the rear
of housing. Install the block and yoke lockscrews, tighten and wire securely.
10. For models so equipped, install the oil trough on
housing. Tighten capscrews and wire securely.
9.
11. Remove the assembly from vise and install the
three tension balls, one in each bore on top of
housing.
8. Install the other 3/4" interlock ball in bore at top
of rear boss. This ball rides between the 1st-2nd
and 3rd-4th speed shift bars,
DISASSEMBLY AND REASSEMBLY
SHIFTING CONTROLS
12. Install the three tension springs, one over each
ball in housing bores.
60
REMOVAL - COMPANION FLANGE,
AUXILIARY SECTION AND CLUTCH HOUSING
COMPANION FLANGE, AUXILIARY SECTION
AND CLUTCH HOUSING
A. Removal of Universal Joint
Companion Flange or Yoke
1. Lock the transmission by engaging two mainshaft gears with sliding clutches (inset). Use a
large breaker bar to turn the nut from output shaft
and remove washer if so equipped.
2. Pull the companion flange or yoke from splines
of output shaft. Remove the speedometer drive
gear or replacement spacer from hub of flange/
yoke or from inside rear bearing cover remaining
on output shaft (inset). For some models, it is
necessary to remove the snap ring in groove of
output shaft PRIOR to removal of the speedometer gear or spacer.
REMOVAL - COMPANION FLANGE,
AUXILIARY SECTION AND CLUTCH HOUSING
B. Removal of Auxiliary Section
3. Remove puller screws and attach a chain hoist to
auxiliary section. Move the assembly to the rear
until free of front section and remove gasket.
1. Turn out the retaining capscrews in auxiliary
housing flange.
2. Insert three puller screws in the tapped holes of
housing flange. Tighten evenly to move auxiliary
section to the rear and just far enough from front
section to break gasket seal.
4. The auxiliary section can also be removed with
transmission set in the vertical position. Block
under the clutch housing to prevent damage to
the input shaft, remove the retaining capscrews
in housing flange and lift the assembly from front
section. Remove gasket.
62
REMOVAL - COMPANION FLANGE,
AUXILIARY SECTION AND CLUTCH HOUSING
c. Removal of Clutch Housing
1.
For models so equipped, remove the clutch release mechanism and/or clutch brake assembly.
See OPTIONS.
2. Turn out the four capscrews and remove the six
nuts and lockwashers from studs securing the
clutch housing to transmission case.
3. Jar clutch housing with a rubber mallet to break
gasket seal and pull from transmission case. Remove gasket.
DISASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
AUXILIARY SECTION (8-SPEED "LL" MODELS)
*NOTE: Use lockwire at these
positions during reassembly.
Cut 6426-10/80
A. Removal and Disassembly of
Range Cylinder Assembly
2. Remove nut from end of yoke bar.
1.
For ease of disassembly, mount the auxiliary section upright in a vise. Turn out the capscrews a n d
remove the range cylinder cover and gasket.
3. Cut lockwire and remove two yoke Iockscrews.
64
DISASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
6. Remove the rance piston from cylinder bore.
If necessary, remove the O-rings from piston I.D.
and O.D. (inset).
4. Pull yoke bar from bore of cylinder housing.
7. Turn out the capscrews and remove the range cylinder housing and gasket. If necessary, remove
the small O-ring from groove in housing bore
(inset).
5. Remove range yoke from sliding clutch of synchronizer assembly.
DISASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
B. Removal of Auxiliary
Countershaft Assemblies
2. Remove the snap ring from groove at rear of each
countershaft.
1. Turn out the capscrews and remove both countershaft rear bearing covers.
NOTE: For removal and disassembly of models
equipped with an Auxiliary Oil Pump Assembly
on rear of countershaft, see OPTIONS.
DISASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
3. Use a soft bar and maul to drive the countershaft forward and from rear bearings.
4. If necessary, secure the assembly in a vise and
remove the bearing inner race from front of countershaft with jaw pullers.
NOTE: The vise used should be equipped with
brass jaws or wood blocks to prevent damage to
the countershaft.
DISASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
C. Removal and Disassembly of
Synchronizer Assembly
3. Remove the sliding clutch from pins of low range
synchronizer ring.
1. Pull the synchronizer assembly from the splines
of range mainshaft.
2. Place the larger low range synchronizer ring on
bench and pull the high range synchronizer from
blocker pins. However, before doing so, cover the
assembly with a shop rag to prevent losing the
three springs released from high range synchronizer at pin locations.
DISASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
D. Removal of Low Range Gear
1. Remove the key from keyway of range mainshaft.
2. Turn the washer located in the hub at low range
gear so that the splines of washer align with the
splines of mainshaft.
DISASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
3. Pull the low range gear and washer from splines
of range mainshaft.
4. Remove the coupler from splines of range mainshaft.
NOTE: If desired, Removal and Disassembly of
Range Mainshaft Assembly may be performed
prior to Removal and Disassembly of Deep Reduction Cylinder Assembly.
DISASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
E. Removal and Disassembly of Deep
Reduction Cylinder Assembly
2. If necessary, turn out the insert valve retaining
nut of covers so equipped and remove insert
valve from bore.
1. Turn out the capscrews and remove the deep reduction cylinder cover and gasket.
DISASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
F. Removal and Disassembly of
Range Mainshaft Assembly
NOTE: Refer to the illustration provided at Part D
of this section.
3. Cut lockwire and remove the lockscrew from shift
yoke.
1. Remove snap ring from range mainshaft.
4. Pull the yoke bar from cylinder housing and remove shift yoke. If necessary, remove the O-ring
from piston O.D. (inset).
2. Remove deep reduction sliding clutch.
5. Remove the deep reduction cylinder housing and
gasket from auxiliary housing. If necessary, remove the small O-ring from bore in cylinder housing.
DISASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS]
5. Remove the front bearing from bore in range
mainshaft. If necessary, press the bushing from
mainshaft bore (inset).
3. Remove the "C" ring from groove at front of mainshaft quill.
4. Insert jaws of puller behind range mainshaft and
pull from quill.
DISASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
G. Removal and Disassembly of
Output Shaft and Rear Bearing
Assemblies
NOTE: In addition to the above, refer to the illustration provided at Part D of this section.
2. If not previously done so, remove the snap ring
and speedometer drive gear or replacement spacer from output shaft of models so equipped.
1. T u r n o u t t h e c a p s c r e w s a n d r e m o v e t h e r e a r
bearing cover and gasket. If necessary, remove
the oil seal from cover (inset).
DISASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
3. Temporarily reinstall rear bearing cover in position on housing ONLY to catch rear bearing cone
released from bore in the following procedure.
5. Remove rear bearing cover and bearing cone.
6. Remove the two bearing cups and outer spacer
from bore in auxiliary housing.
4. Use a soft bar and maul to drive the output shaft
forward and through rear bearing assembly. This
will cause the rear bearing cone to be released
from bore in auxiliary housing.
NOTE: When applying force to rear of output
shaft, DO NOT AMAGE THREADS. Support
front of shaft to avoid damaging the mainshaft
quill once output shaft is free of bearing.
DISASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
7. Remove the bearing inner spacer from output
shaft.
9. If necessary, remove the snap ring from I.D. of
deep reduction gear of models so equipped.
8. Using the front face of deep reduction gear as a
base, press the output shaft through the bearing
and gear. This will free the bearing, gear, washer,
and, for models so equipped, the spacer or oil retention ring. DO NOT DAMAGE MAINSHAFT
QUILL.
76
REASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
AUXILIARY SECTION (8-SPEED "LL" MODELS)
A. Reassembly and Installation of
Range Mainshaft Assembly
1. Secure the output shaft in a vise with mainshaft
quill up.
2. If necessary, press the bushing in rear bore of
range mainshaft (inset) and install the mainshaft
in position on quill,
3. Install the bearings in front bore of range mainshaft. Use a small flanged-end driver to properly
seat bearing in bore on mainshaft quill.
4. Install the "C" ring in groove of mainshaft quill to
retain bearing.
REASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
B. Reassembly and Installation of
Output Shaft and Rear
Bearing Assemblies
3. IMPORTANT: Mark any two adjacent teeth on
deep reduction gear and repeat the procedure for
the two adjacent teeth directly opposite the first
set marked. A highly visible color of toolmakersÕ
dye is recommended for making timing marks.
1. Remount the output shaft in vise with threaded-end
up and secure on range mainshaft. For models so
equipped, install the stepped washer on shaft, large
diameter step down.
2. Install the splined spacer on output shaft. For
models equipped with stepped washer on shaft,
install the spacer with large diameter splines
down (right).
4. If previously removed, install the snap ring in
deep reduction gear of models so equipped (inset). Install the gear on output shaft, clutching
teeth down and engaged with splines of spacer.
REASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
5. Install the washer on shaft against deep reduction gear, small diameter step down (Left:
11608LL Models); or side with large groove up
(Right: 14608LL Models).
NOTE: For models not equipped with the oil retention ring in auxiliary housing, proceed to No. 8.
6. 14608LL Models only - Place the oil retention
ring in housing bore, cupped side up (left). Use a
soft bar and two rear bearing outer spacers
stacked on top of each other to move the oil retention ring 2" deep into bore. The ring will be at
the proper depth when top of second spacer is
flush with housing bore. Remove the spacers
when installation is completed.
8. Heat the front bearing cone and install on output
shaft against oil retention ring, bearing taper up
(left). For models not equipped with the oil retention ring in auxiliary housing, install the heated
bearing cone on shaft against washer, taper up
(right).
NOTE: DO NOT HEAT BEARING ABOVE 275o
(136oC). If possible, use heat lamps as source.
9. Install the bearing inner spacer on output shaft
against front bearing cone.
10. Place the front bearing cup in housing bore, taper
to the inside, and use a soft bar to start cup into
bore.
7. Place two mainshaft spacers or flat steel stock of
equivalent thickness (.190 ") on rear face of deep
reduction gear, 180o from each other (left). Install
the auxiliary housing over end of output shaft assembly, allowing the housing to rest on blocking
(right).
REASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
11. Stack the bearing outer spacer and rear bearing
cup on top of the front bearing cup in proper sequence. Use a soft bar or a flanged driver to move
all three parts evenly into housing bore until lip
of rear bearing cup seats on housing.
14. Remount assembly upright in vise and secure. in-
stall the deep reduction-sliding clutch on output
shaft, internal splines toward gear and engaged
with splines of shaft.
12. If not previously done so, install the auxiliary
housing over end of output shaft assembly. Heat
the rear bearing cone and install on shaft, taper
down and inside bearing cup.
NOTE: DO NOT HEAT BEARING ABOVE 275o
(136oC).
15. Install snap ring in groove of range mainshaft.
13. For 14608-LL Model, install the speedometer
drive gear or replacement spacer on output shaft
and retain with snap ring installed in groove of
shaft (left). Remove the blocking (two mainshaft
spacers or flat steel stock) from between the
deep reduction gear and auxiliary housing (right).
80
REASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS]
C. Reassembly and Installation of
Deep Reduction Cylinder Assembly
1. If previously removed, install the small O-ring in
bore of cylinder housing (inset). Position the corresponding new gasket on housing mounting surface and install the deep reduction cylinder
housing in rear bore of auxiliary housing, air
channel to the right.
16. If previously removed, install the oil seal in rear
bearing cover (inset). Seal should be installed so
the spring is to the front of cover.
17. Position gasket on cover mounting surface and
install the rear bearing cover on auxiliary housing. Use the nylon collar and brass washer with
capscrew at the chamfered hole which intersects
speedometer bore (inset). Tighten capscrews to secure cover to housing.
NOTE: Because the collar becomes distorted
when compressed, DO NOT REUSE OLD NYLON
COLLAR.
2. If previously removed, install the O-ring in groove
of yoke bar piston.
81
REASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
5. For models so equipped, install the insert valve
in bottom exhaust port of cylinder cover as
shown (left). Install the valve retaining nut in exhaust port of cover and tighten to recommended
torque ratings (right).
NOTE: Prior to installation of insert valve, apply a
small amount of silicone lubricant to O-rings on
O.D. of valve.
3. Place the reduction yoke into position with sliding clutch, lockscrew hole to the front. From rear
of auxiliary housing, insert the yoke bar through
cylinder bore and into yoke, aligning the notch in
bar with yoke lockscrew hole.
4. Install the yoke lockscrew, tighten and wire securely.
6. Position the corresponding new gasket on cover
mounting surface and install the deep reduction
cylinder cover, aligning the air channel with channel in cylinder housing housing. Tighten capscrews to secure cover to cylinder housing.
REASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
D. Installation of Low Range Gear
1. Install the coupler on range mainshaft, clutching
teeth to the rear.
3. Install the splined tolerance washer on mainshaft
and in hub of low range gear. Rotate the washer
in groove of mainshaft to engage external splines
with clutching teeth of gear and align square internal spline with keyway of mainshaft.
IMPORTANT: This washer is available in varying
thicknesses. Use the splined tolerance washer
that provides a snug fit in gear hub.
2. Install the low range gear on mainshaft against
coupler, clutching teeth to the front.
4. Install the key in keyway of range mainshaft, inserting the thick end of key in square internal
spline of tolerance washer to lock low range gear
on shaft.
REASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
E. Reassembly and Installation of
Synchronizer Assembly
1. Place the larger low range synchronizer ring on
bench and install the sliding clutch on blocker
pins, recessed side up.
3. Place the high range synchronizer ring over
blocker pins of low range synchronizer, seating
the springs against pins.
4. Apply downward pressure to the high range synchronizer ring WHILE TWISTING COUNTERCLOCKWISE to compress the springs and fully
seat ring on blocker pins of low range synchronizer.
2. Install the three springs in bores of high range
synchronizer ring.
REASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
5.
2. IMPORTANT: On the low range gear of each
iliary countershaft assembly locate the
stamped on one tooth. Align tooth with "O",
smaller deep reduction gear tooth and mark
high visible color of toolmakers' dye.
Install the synchronizer assembly on splines of
range mainshaft, low range ring towards rear.
aux"O"
with
with
F. Timing and Installation of
Auxiliary Countershaft Assemblies
3.
1. If previously removed, install the bearing inner
race on front of each countershaft.
85
Place one countershaft into position in housing,
meshing the marked tooth of countershaft gear
with either set of two marked teeth of mainshaft
deep reduction gear (inset). Center rear of countershaft in bearing bore, start rear bearing in bore
and complete installation with a flanged-end
driver and maul. Repeat the procedure with other
auxiliary countershaft assembly, making sure the
deep reduction gear set remains in time during
bearing installation.
NOTE: Check synchronizer assembly for springs
that may be released during bearing installation.
REASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
4. Install the snap ring in groove at rear of each
countershaft
.
1. If previously remvoed, install the O-ring in bore of
range cylinder housing.
5. Position the corresponding new gasket on cover
mounting surface and install both rear bearin
covers. Tighten capscrews to secure covers to
auxiliary housing.
NOTE: For reassembly and installation of models
equipped with an Auxiliary Oil Pump Assembl
on rear of countershaft, see OPTIONS.
g
y
2. Position the corresponsding new gasket on housing mounting surface and install the cylinder
housing in rear bore of auxiliary housing, air fitting to the upper left. Tighten capscraews to secure cylinder housing to auxiliary housing.
86
REASSEMBLY - AUXILIARY
SECTION (8-SPEED "LL" MODELS)
3. Place the range yoke into position with sliding
clutch of synchronizer assembly, long hub of
yoke to the rear. Insert threaded-end of yoke bar
through yoke and into bore of range cylinder
housing, aligning the notches in bar with yoke
Iockscrew holes.
6. In cylinder housing bore, install the range piston
on yoke bar, flat side to the rear. Secure with nut
tightened to recommended torque ratings (inset).
4. Install the two yoke Iockscrews, tighten and wire
securely.
7. Position the corresponding new gasket on cover
mounting surface and install teh range cylinder
cover on housing, open port to the upper left.
Tighten capscrews to secure cover to housing.
5. If previously removed, instll the O-rings in th
I.D. and O.D. of range piston.
e
87
DISASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
AUXILIARY SECTION (9-SPEED MODELS)
A. Removal and Disassembly of
Range Cylinder Assembly
2. Remove nut from end of yoke bar.
1. For ease of disassembly, mount the auxiliary section upright in a vise. Turn out the capscrews and
remove the range cylinder cover and gasket.
DISASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
5. Remove range yoke from sliding clutch of synchronizer assembly.
3. Cut lockwire and remove two yoke lockscrews.
6. Remove the range piston from cylinder bore.
If necessary, remove the O-rings from piston I.D.
and O.D. (inset).
4. Pull yoke bar from bore of cylinder housing.
DISASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS]
7. Turn out the capscrews and remove the range cylinder housing and gasket. If necessary, remove
the small O-ring from groove in housing bore (inset).
DISASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
I
Cut 6485-9/80
B. Removal of Auxiliary
Countershaft Assemblies
2. Remove the snap ring from groove at rear of each
countershaft.
1. Turn out the capscrews and remove both countershaft rear bearing covers and gaskets.
DISASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS]
3. Use a soft bar and maul to drive the countershaft forward and from rear bearings.
4. Remove the bearings from bores in auxiliary plate
by tapping lightly and evenly to the rear with a
soft bar.
5. If necessary, secure the assembly in a vise and remove the bearing inner race from front of countershaft with jaw pullers.
NOTE: The vise used should be equipped with
brass jaws or wood blocks to prevent damage to
the countershaft.
DISASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
C. Removal and Disassembly of
Synchronizer Assembly
2. Place the larger low range synchronizer ring on
bench and pull the high range synchronizer from
blocker pins. However, before doing so, cover the
assembly with a shop rag to prevent losing the
three springs released from high range synchronizer at pin locations.
1. Pull the synchronizer assembly from the splines
of output shaft.
3. Remove the sliding clutch from pins of low range
synchronizer ring.
DISASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
DISASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
D. Removal and Disassembly of
Output Shaft and Rear Bearing
Assemblies
1. Use a soft bar and maul to drive the output shaft
forward and through rear bearing assembly.
3. Using the front face of low range gear as a base,
press the output shaft through the gear and
bearing. Remove the bearing and washer from
hub of low range gear.
2. Remove the bearing inner spacer from output
shaft.
4. If necessary, remove the snap ring from low range
gear of models so equipped.
DISASSEMBLYÑAUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
5. Remove the splined spacer from output shaft.
6. Remove the stepped washer from shaft of models
so equipped.
7. Turn out the capscrews and remove the rear
bearing cover and gasket. The rear bearing cone
will drop from bore in auxiliary plate when cover
is removed. If necessary, remove the oil seal from
cover (inset).
8. Remove the two bearing cups and outer spacer
from bore in auxiliary plate.
REASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
AUXILIARY SECTION (9-SPEED MODELS)
A. Reassembly and Installation of
Output Shaft and Rear Bearing
Assemblies
3. IMPORTANT: Mark any two adjacent teeth on low
range gear and repeat the procedure for the two
adjacent teeth directly opposite the first set
marked. A highly visible color of toolmakers
Õ dye
is recommended.
1. Secure the output shaft in a vise with threaded
end up. For models so equipped, install the
stepped washer on shaft large diameter step
down (arrow), then install the splined spacer.
2. For 14609 models, install the spacer with large
diameter splines down.
4. If previously removed, install the snap ring in low
range gear of models so equipped (inset). Install
the gear on output shaft, clutching teeth down
and engaged with splines of spacer.
REASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
5. Install the washer on shaft; 11609, 12609 models
flat side of washer facing up, 14609 models flat
side of washer facing down.
6.
Heat the front bearing cone and install on shaft
against washer, bearing taper up.
NOTE: DO NOT HEAT- BEARING ABOVE 275oF
(136oC). If possible, use heat lamps as source.
7. Install the bearing inner spacer on output shaft.
8. Install the front bearing cup in bore of auxiliary
plate, taper to the inside. Use a soft bar to start
cup into bore.
REASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
9. Place the bearing outer spacer against cup and
use a soft bar or flanged-end driver to move both
parts evenly into bore.
11. Install the auxiliary plate over end of output shaft
assembly. Heat the rear bearing cone and install
on shaft, taper down and inside bearing cup.
NOTE: DO NOT HEAT BEARING ABOVE 275oF
(136oC).
12. If previously removed, install the oil seal in rear
bearing cover with a flanged driver (inset). SeaI
should be installed so the spring is to the front of
transmission.
10. Place the rear bearing cup against spacer. Use a
flanged-end driver to move all three parts evenly
into bore until lip of rear bearing cup seats on
auxiliary plate.
REASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
13. Remount the assembly upright in vise and secure
on flange of auxiliary plate. Position the corresponding new gasket on cover mounting surface
and install the rear bearing cover. Use the nylon
collar and brass washer with capscrew at the
chamfered hole which intersects speedometer
bore (inset} Tighten the capscrews to secure
cover to auxiliary plate.
NOTE: Because the collar becomes distorted
when compressed, DO NOT RE-USE OLD NYLON
COLLAR.
2. Install the three springs in bores of high range
synchronizer ring.
B. Reassembly and Installation
of Synchronizer Assembly
3. Place the high range synchronizer ring over
blocker pins of low range synchronizer, seating
the springs against pins.
1. Place the larger low range synchronizer ring on
bench and install the sliding clutch on blocker
pins, recessed side up.
REASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
C. Timing and Installation of
Auxiliary Countershaft Assemblies
1. Apply downward pressure to the high range synchronizer ring WHILE TWISTING COUNTERCLOCKWISE to compress the springs and fully
seat ring on blocker pins of low range synchronizer.
1. If previously removed, install the bearing inner
race on front of each countershaft.
5. Install the synchronizer assembly on splines of
output shaft, low range ring in recess of low
range gear.
2. IMPORTANT: On the low range gear of each auxiliary countershaft assembly, use a highly visible
color of toolmaker's dye to mark the toot h
stamped with an "O" for timing purposes.
REASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
4. Install the snap ring in groove at rear of each
countershaft
.
3. Place one of the assemblies into position in rear
plate, meshing the marked tooth of countershaft
low range gear with either set of two marked
teeth of low range gear on output shaft (inset).
Center rear of countershaft in bearing bore, start
rear bearing in bore and complete installation
with a flanged-end driver and maul. Repeat the
procedure with other auxiliary countershaft assembly, making sure the low range gear set remains in time during bearing installation.
NOTE: Check synchronizer assembly for springs
that may have been released from bores in high
range ring during bearing installation.
5. Position the corresponding new gasket on cover
mounting surface and install both rear bearing
covers. Tighten capscrews to secure covers to
auxiliary plate.
REASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
D. Reassembly and Installation of
Range Cylinder Assembly
1. If previously removed, install the O-ring in bore o
range cylinder housing.
2. Position the corresponding new gasket on housing mounting surface and install the cylinder
housing in rear bore of auxiliary plate, air fitting
to the upper left. Secure housing to plate with
capscrews tightened to recommended torque ratings.
f
3. Place the range yoke into position with sliding
clutch of synchronizer assembly, long hub of
yoke to the front (RT-11609/12609 Series); long
hub of yoke to the rear (RT-14609 Series). Insert
threaded-end of yoke bar through yoke and into
bore of range cylinder housing, aligning the
e
notches in bar with yoke Iockscrew holes (inset).
4. Install the two yoke Iockscrews, tighten and wire
securely.
REASSEMBLY - AUXILIARY SECTION
(9-SPEED AND RT-8608L MODELS)
5. If previously removed, install the O-rings in the
I.D. and O.D. of range piston.
6. In cylinder housing bore, install the range piston
on yoke bar, flat side to the rear. Secure with nut
tightened to recommended torque ratings (inset).
7.
Position the corresponding new gasket on cover
mounting surface and install the range cylinder
cover on housing, open port to the upper left.
Tighten capscrews to secure cover to housing.
DISASSEMBLY-AUXILIARY
SECTION (13-SPEED MODELS)
AUXILIARY SECTION (13-SPEED SPLITTER MODELS)
A. Removal and Disassembly of
Range Cylinder Assembly
1. For ease of disassembly, mount the auxiliary section upright in a vise. Turn out the capscrews and
remove the range cylinder cover and gasket.
2. Remove nut from end of yoke bar.
DISASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
3. Cut lockwire and remove two yoke Iockscrews.
5. Remove range yoke from sliding clutch of synchronizer assembly.
4. Pull yoke bar from bore of cylinder housing.
6. Remove the range piston from cylinder bore.
If necessary, remove the O-rings from piston I.D.
and O.D. (inset).
DISASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
7. Turn out the capscrews and remove the range cylinder housing and gasket. If necessary, remove
the small O-ring from groove in housing bore (inset).
DISASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
I
Cut 6503-9/80
B. Removal of Auxiliary
Countershaft Rear Bearings
1. Turn out the capscrews and remove both countershaft rear bearing covers.
NOTE: For removal and disassembly of models
equipped with an Auxiliary Oil Pump Assembly
on rear of countershaft, see OPTIONS.
2. Remove the snap ring from groove at rear of each
countershaft.
108
DISASSEMBLY-AUXILIARY
SECTION (13-SPEED MODELS)
3. Use a soft bar and maul to drive the countershaft forward far enough to partially unseat rear
bearings.
4. Using caution so as not to damage the bearing inner race on front of each countershaft, drive the
shafts to the rear to expose the bearing snap
rings.
5. Use a puller to remove the countershaft rearr
NOTE: The auxiliary countershaft assemably CANNOT be removed from housing until splitter shift
yoke is removed.
DISASSEMBLY-AUXILIARY
SECTION (13-SPEED MODELS)
*Note: Not used in current production
or in K-1654 kit
Was only used with A-4683 Synchronizer
Do not use with A-4388 Synchronizer
Ref. Service Bulletin #130 7/81
Cut 6480 B-3/84
C. Removal and Disassembly of
Synchronizer Assembly
1. Spread the countershaft assemblies and pull the
synchronizer assembly from splines of rang
mainshaft.
NOTE: To spread countershaft far enough to remove synchronizer on RTO & RTOO models
move the splitter clutch to the forward position.
e
,
2. Place the larger low range synchronizer ring on
bench and pull the high range synchronizer from
blocker pins. However, before doing so, cover the
assembly with a shop rag to prevent losing the
three springs released from high range synchronizer at pin locations.
DISASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
3. Remove the sliding clutch from pins of low range
synchronizer ring.
REASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
D. Removal of Low Range Gear
2. Turn the washer located in the hub of low range
gear so that the splines of washer align with the
splines of mainshaft.
1. Remove the key from keyway of range mainshaft.
112
DISASSEMBLY-AUXILIARY
SECTION (13-SPEED MODELS)
3. Spread the countershaft assemblies and pull the
low range gear and washer from splines of mainshaft.
4. Remove the coupler from splines of range mainshaft.
NOTE: If desired, Removal and Disassembly of
Range Mainshaft Assembly may be performed
prior to Removal and Disassembly of Splitter Cylinder Assembly.
DISASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
\
E. Removal and Disassembly of
Splitter Cylinder Assembly
1. Cut lockwire and remove the Iockscrew from shift
yoke.
2. Turn out the capscrews and remove the splitter
cylinder cover and gasket.
DISASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
3. If necessary, turn out the plug in bottom bore of
cover and remove the insert valve.
4. Remove the yoke bar from cylinder housing bore.
If necessary, remove the O-ring from piston O.D.
(inset).
5. Remove the splitter cylinder housing and gasket
from auxiliary housing. If necessary, remove the
small O-ring from bore in cylinder housing (inset).
DISASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
F. Removal and Disassembly of Range
Mainshaft Assembly
3. Remove both auxiliary countershafts.
1. Remove the snap ring from the groove of range
mainshaft.
4. Remove the "C" ring from the groove at front of
mainshaft quill.
2. Remove splitter shift yoke and sliding clutch.
DISASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
5. Remove range mainshaft with jaw puller.
6. Remove bearing from front bore of mainshaft. If
necessary, press bushing from mainshaft (inset).
7. Remove bearing inner race from front of countershaft with jaw puller.
DISASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
G. Removal and Disassembly of
Output Shaft and Rear Bearing
Assemblies
NOTE: In addition to the above, refer to the illustration provided at Part D of this section.
1.
Use a soft bar and maul to drive the output shaft
forward and through rear bearing assembly.
NOTE: When applying force to rear of output
shaft, DO NOT DAMAGE THREADS. Support
front of shaft to avoid damaging the mainshaft
quill once output shaft is free of bearing assembly.
2. Remove the bearing inner spacer from output
shaft.
DISASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
3. Using the front face of splitter gear as a base,
press the output shaft through the bearing,
washer and gear. DO NOT DAMAGE MAINSHAFT
QUILL. If necessary, remove the snap ring from
I.D. of splitter gear (inset).
4. Turn out the retaining capscrews and remove the
rear bearing cover and gasket from auxiliary
housing. The rear bearing cone will drop from
housing bore when cover is removed. If necessary, remove the oil seal from cover (inset).
5. Remove the two bearing cups and outer spacer
from housing bore.
REASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
AUXILIARY SECTION (13-SPEED MODELS)
A. Reassembly and Installation of
Range Mainshaft Assembly
1. Secure the output shaft in a vise with mainshaft
quill up.
2. If necessary, press the bushing in rear bore of
range mainshaft and install the mainshaft in position on quill. (inset)
3. Install the bearing in front bore of range mainshaft. Use a small flanged-end driver to properly
seat bearing in bore on mainshaft quill.
4. Install the "C" ring in groove of mainshaft quill to
retain bearing.
REASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
B. Reassembly and Installation of
Output Shaft and Rear
Bearing Assemblies
1. Remount the output shaft in vise with threadedend up and secure on range mainshaft. Install the
stepped washer on shaft, flat side down.
2. Install the splined spacer and output shaft
against washer, shoulder up.
3. IMPORTANT: For timing purposes, mark any two
adjacent teeth on splitter gear and repeat the procedure for the two adjacent teeth directly opposite the first set marked. A highly visible color of
toolmakers' dye is recommended.
4. If previously removed, install the snap ring in
splitter gear (inset). Install the gear on output
shaft, snap ring up and clutching teeth engaged
with splines of spacer.
REASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
5. Install the stepped washer on shaft against gear,
flat side up.
6. Heat the front bearing cone and install on output
shaft against washer, bearing taper up.
NOTE: DO NOT HEAT BEARING ABOVE 275oF
(136oC). If possible, use heat lamps as source.
7. Install the bearing inner spacer on output shaft.
8. Place the front bearing cup in housing bore, taper
to the inside, and use a soft bar to start cup into
bore.
REASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
,
9. Stack the bearing outer spacer and rear bearing
cup on top of front bearing cup in proper sequence. Use a flanged-end driver to move all
three parts evenly into bore until lip of rear
bearing cup seats on housing.
11. Heat the rear bearing cone and install on shaft,
taper down and inside cup. Make sure the lip of
rear bearing cup is fully seated on housing with
bearing installed.
NOTE: DO NOT HEAT BEARING ABOVE 275oF
(136oC).
10. Install the auxiliary housing over end of output
shaft assembly, seating the front bearing cone on
shaft in cup.
12. If previously removed, install the oil seal in rear
bearing cover. Seal should be installed so the
spring is to the front of cover (inset).
REASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
13. Position the corresponding new gasket on cover
mounting surface and install the rear bearing
cover on auxiliary housing. Use the nylon collar
and brass washer with capscrew at the chamfered hole which intersects speedometer bore (inset). Tighten the capscrews to secure cover to
housing.
NOTE: Because the collar becomes distorted
when compressed, DO NOT REUSE OLD NYLON
COLLAR.
REASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
C. Timing and Installation of
Auxiliary Countershaft Assemblies
NOTE: The auxiliary countershaft assemblies
CANNOT be installed in housing with prior installation of the splitter shift yoke.
3. Place the left countershaft assembly into position in housing and mesh the marked tooth of
countershaft splitter gear with either set of two
marked teeth of splitter gear on output shaft. DO
NOT INSTALL REAR BEARING AT THIS TIME.
1. If previously removed, install the bearing inner
race on front of each countershaft.
2. On the splitter gear of each assembly, use a
highly visible color of toolmakers' dye to mark
the tooth stamped with an "O" for timing purposes.
4. Repeat the previous procedure with the right
countershaft assembly, meshing the marked
tooth of countershaft splitter gear with the remaining set of two marked teeth of splitter gear
on output shaft. DO NOT INSTALL REAR
BEARING AT THIS TIME.
REASSEMBLY-AUXILIARY
SECTION (13-SPEED MODELS)
D. Reassembly and Installation of
Splitter Cylinder Assembly
3. If previously removed, install the O-ring in O.D.
groove of yoke bar piston.
1. Install the splitter sliding clutch on output shaft,
internal splines toward gear and engaged with
splines of shaft (inset). Place the splitter shift
yoke into position with sliding clutch on output
shaft, yoke hub to the front of housing.
4. From the rear of housing, insert the yoke bar
through cylinder bore and into shift yoke, aligning the notch in bar with Iockscrew hole in yoke
hub.
2. If previously removed, install the small O-ring in
bore of cylinder housing (inset). Position the corresponding new gasket on housing mounting surface and install the splitter cylinder housing in
rear bore of auxiliary housing, air channel to the
right.
REASSEMBLY-AUXILIARY
SECTION (13-SPEED MODELS)
5. Install the yoke lockscrew, tighten and wire securely.
7. Position the corresponding new gasket on cover
mounting surface and install the splitter cylinder
cover on cylinder housing, exhaust port down. install the capscrews in cover and tighten to secure
the assembly on auxiliary housing.
NOTE: With the cover installed in this manner,
the air channel of cover will align with that of cylinder housing.
E. Installation of Low Range Gear
6. If previously removed, install the insert valve in
bottom bore of cylinder cover, flat end to the inside (left). Install the valve retaining nut in exhaust port of cover and tighten to recommended
torque ratings (right).
NOTE: Prior to installation of insert valve, make
sure the three O-rings on valve O.D. are not defective. Replace, if necessary.
1. Install the snap ring in groove of range mainshaft
(inset). Install the coupler on range mainshaft
against snap ring, clutching teeth to the rear.
127
REASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
2.
4.
Spread the countershaft assemblies with splitter
gear set remaining in time and install the low
range gear on shaft against coupler, clutching
teeth to the front.
NOTE: To spread countershaft far enough to install low range gear, move the splitter clutch to
the forward position.
Install the key in keyway of range mainshaft, inserting the thick end of key in keyway of tolerance washer to lock low range gear on shaft.
F. Reassembly and Installation of
Synchronizer Assembly
1. Place the larger low range synchronizer ring on
bench and install the sliding clutch on blocker
pins, recessed side up.
3. Install the splined tolerance washer on mainshaft
and in hub of low range gear. Rotate the washer
in groove of mainshaft to engage external splines
with clutching teeth of gear and align the keyway
of washer with keyway of mainshaft.
IMPORTANT: This washer is available in varying
thicknesses. Use the splined tolerance washer
that provides a snug fit in gear hub.
128
REASSEMBLY - AUXILIARY
SECTION (1 3-SPEED MODELS]
2. Install the three springs in bores of high range
synchronizer ring.
4. Apply downward pressure to the high range synchronizer ring WHILE TWISTING COUNTERCLOCKWISE to compress the springs and fully
seat ring on blocker pins of low range synchroni-
3. Place the high range synchronizer ring over
blocker pins of low range synchronizer, seating
the springs against pins.
5. Spread the countershaft assemblies with splitter
gear set remaining in time and install the synchronizer assembly on splines of range mainshaft, low range ring in recess of low range gear.
REASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
G. Installation of Auxiliary
Countershaft Rear Bearings
NOTE: The splitter gear set MUST remain in time
during the installation of rear bearings.
2.
Install the snap ring in groove at rear of each
countershaft.
1. Center the rear of either countershaft assembly in
bearing bore and use a soft bar to start rear
bearing in bore. Complete installation with a
flanged-end bearing driver and maul. Repeat the
procedure with other auxiliary countershaft assembly, making sure the splitter gear set has remained in time.
NOTE: Check the synchronizer assembly for
springs that may have been released from bores
in high range ring during bearing installation.
3. Position the corresponding new gasket on cover
mounting surface and install both rear bearing
covers. Tighten capscrews to secure covers to
auxiliary housing.
NOTE: For reassembly and installation of models
equipped with an Auxiliary Oil Pump Assembly
on rear of countershaft, see OPTIONS.
REASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
H. Reassembly and Installation of
Range Cylinder Assembly
1. If previously removed, install the O-ring in bore of
range cylinder housing.
2.
Position the corresponding new gasket on housing mounting surface and install the cylinder
housing in rear bore of auxiliary housing, air fitting to the upper left. Tighten capscrews to secure cylinder housing to auxiliary housing.
3. Place the range yoke into position with sliding
clutch of synchronizer assembly, long hub of
yoke to the rear. Insert threaded-end of yoke bar
through yoke and into bore of range cylinder
housing, aligning the notches in bar with yoke
lockscrew holes.
4. Install the two yoke lockscrews, tighten and wire
securely.
REASSEMBLY - AUXILIARY
SECTION (13-SPEED MODELS)
5. If previously removed, install the O-rings in the
I.D. and O.D. of range piston.
6. In cylinder housing bore, install the range piston
on yoke bar, flat side to the rear. Secure with nut
tightened to recommended torque ratings (inset).
7. Position the corresponding new gasket on cover
mounting surface and install the range cylinder
cover on housing, open port to the upper left.
DISASSEMBLY - FRONT SECTION
A. Removal of Front Bearing Cover
and Input Shaft Nut
1. Turn out the retaining capscrews and remove the
drivegear bearing cover and gasket.
2. If necessary remove the oil seal from cover of
models so equipped.
3. Engage two mainshaft sliding clutches into gear,
this prevents transmission from rotating. Remove
nut (left hand thread) with drive gear nut removing tool.
DISASSEMBLY - FRONT SECTION
CASE ASSEMBLIES
Cut 6417-9/80
*NOTE: Use lockwire at these
positions during reassembly,
B. Removal and Disassembly of
Auxiliary Drive Gear Assembly
2. Cut lockwire and remove the capscrews from
bearing retainer ring.
1. Remove the snap ring from groove at rear of
mainshaft.
DISASSEMBLY - FRONT SECTION
3. Insert three puller screws in the specially tapped
holes of retainer ring. Tighten screws evenly to
5. Using the rear face of retainer ring as a base,
press the drive gear through bearing.
4. Remove the snap ring from hub of auxiliary drive
gear.
6. If necessary, remove the O-rings from hub O.D. of
auxiliary drive gear.
DISASSEMBLY - FRONT SECTION
C. Removal and Disassembly of Left
Reverse Idler Gear Assembly
1. Move the mainshaft reverse gear as far to the rear
as possible and remove the snap ring from I.D. of
gear.
2. Move the reverse gear forward and against the
LOW speed gear, engaging the splines of mainshaft sliding clutch.
DISASSEMBLY - FRONT SECTION
3. Using jaw pullers or impace puller, remove
the auxiliary countershat front bearing from left
reverse idler gear bore. If necessary, repeat the
procedure for removing the auxiliary countershaft
front bearing from right reverse idler gear bore.
5. Remove the pipe plug from rear of idler shaft and
use an impact puller, 1/2-13 threaded end, to remove shaft from case bore (inset).
6. As the idler shaft and idler plat are moved to the
rear, remove the thrust washer, and gear from
case.
4. Turn out the stop nut from front of idler shaft and
remove washer.
7. If necessary, remove the inner race from bearing
and press needle bearing from idler gear.
DISASSEMBLYÑ FRONT SECTION
D. Removal of Countershaft Bearings
NOTE: In the following instructions, the front and
rear bearings from BOTH countershaft are removed. For removal of the mainshaft assembly
from case, it is necessary to remove the bearings
from right countershaft ONLY.
2. From inside the case, use a soft punch and maul
to drive the countershaft rear bearings to the rear
and from case bores.
NOTE: This procedure will damage the bearings
and should not be attempted unless replacement
of the bearings is planned.
1. Remove the snap ring from groove at rear of each
countershaft.
DISASSEMBLY - FRONT SECTION
3. Turn out the capscrew and remove the front
bearing retainer plate from each countershaft.
4. Use a soft bar and maul to drive each countershaft to the rear as far as possible. This will partially unseat the front bearings.
NOTE: The soft bar used should have a flattened
end that is large enough so as not to damage
holes for roll pin and capscrew.
5. From the rear of case, use a soft bar and maul to
drive each countershaft forward to unseat the
front bearings from case bores and expose the
bearing snap rings.
6. Use a bearing puller or pry bars to remove the
countershaft front bearings.
N O T E : The bearing inner race of models
equipped with roller-type front bearings will remain pressed on countershaft.
DISASSEMBLY - FRONT SECTION
E. Removal and Disassembly of
Mainshaft Assembly
2. Remove the 3rd-4th speed sliding clutch from
front of mainshaft.
1. Block the right countershaft assembly against
case wall and pull the mainshaft assembly to the
rear to free pilot from pocket of input shaft. Tilt
front of mainshaft up and lift the assembly from
case (inset). Use caution as the reverse gear is
free and can fall from shaft.
140
DISASSEMBLY - FRONT SECTION
3. Remove the snap ring from groove at rear of
mainshaft.
5. From rear of mainshaft, pull the key from mainshaft keyway.
NOTE: When removing limit washers, spacers
and gears, note their location on mainshaft to facilitate reassembly. Keep the internal-splined
washers and external-splined spacers with the
gear from which they were removed. There is
ONLY one limit washer and one spacer belonging
to each gear.
4. Remove the reverse gear and spacer from rear of
mainshaft.
6. Turn the reverse gear limit washer to align its
splines with those of mainshaft and remove
washer.
DISASSEMBLY - FRONT SECTION
7. Remove the LO-Reverse speed sliding clutch
from mainshaft.
9. Pull the LO speed gear from rear of mainshaft to
remove limit washer, spacer and gear. If necessary, remove the snap ring from I.D. of gear (inset).
8. Using a small screwdriver, turn the limit washer in
hub of LO speed gear to align its splines with
those of the mainshaft.
10. Remove each remaining gear, limit washer, spacer
and sliding clutch from mainshaft in the same
manner previously detailed. And, if necessary, remove the snap ring from I.D. of each gear.
DISASSEMBLY - FRONT SECTION
F. Removal and Disassembly of
Main Drive Gear Assembly
2. Move upper countershaft to right and remove
drive gear and spacer from case.
1. Drive the input shaft back through bearing with a
soft bar and maul. Remove input shaft from case
(inset).
DISASSEMBLY - FRONT SECTION
3. Drive the input shaft bearing out the front of
case.
5. Check the bushing in pocket of input shaft and
replace if worn or damaged.
6. Remove the front and rear bearings from left
countershaft as described in Part D of this section.
4. If necessary, remove the snap ring from drive
gear.
DISASSEMBLY - FRONT SECTION
G. Removal and Disassembly of
NOTE: Refer to the illustration provided at Part D
of this section. Except for the PTO gears, the left
and right countershaft assemblies are identical
and disassembled in the same manner.
3. Using the rear face 3rd speed sear as a base,
press the drive gear, PTO gear and 3rd speed (or
overdrive) gear from each countershaft (left). This
will also remove the front bearing inner race from
countershaft of models so equipped (right).
IMPORTANT: NEVER USE THE PTO GEAR AS A
PRESSING BASE. The narrow face width of this
gear makes it very susceptible to breakage.
1.
Move the right countershaft assembly to the rear
as far as possible so front of shaft can be removed from case bore and moved to the center of
case. Lift the assembly from case and repeat the
procedure for left countershaft assembly.
NOTE: The left and right reverse idler gear assemblies are identical and disassembled in the
same manner. If removal and disassembly of this
assembly is necessary, refer to Part C of this section.
2 . Remove the drive gear retaining snap ring from
front of each countershaft.
4. Using the rear face of 1st speed gear as a base,
press the 2nd speed and 1st speed gears from
each countershaft.
NOTE: Always use caution when pressing a cluster of gears from countershaft. It is necessary to
press these gears off in a cluster of three and,
then, in a cluster of two.
DISASSEMBLY-FRONT SECTION
5. If necessary, remove the keys and roil pin from
countershaft.
REASSEMBLY - FRONT SECTION
CASE ASSEMBLIES
NOTE: Before starting reassembly, make sure the
three magnetic discs are solidly in place at bottom of
case. These can be secured to disc mounting surfaces with Scotch Grip Rubber Adhesive or equivalent adhesive.
A. Reassembly and Installation of
Right Reverse Idler Gear Assembly
3. Install the bearing inner race on idler shaft and insert shaft into case bore, threaded-end of shaft to
the front. As the idler shaft is moved forward, install the reverse idler gear on shaft, long hub to
the front and seating on bearing inner race. Position the thrust washer on shaft between the gear
and support boss in case and continue with
movement of idler shaft forward into bore of support boss.
1. If previously removed, thread pipe plug in rear of
reverse idler shaft and tighten. Install the idler
plate on shaft, flat side to the front (inset).
4. Making sure that the reverse idler shaft is seated
in bore of support boss and forward as far as possible, install the washer and stop nut on front of
shaft. Tighten nut to recommended torque rating.
2. If previously removed, press the needle bearing
into bore of reverse idler gear.
REASSEMBLY-FRONT SECTION
5.
Install the OUTER RACE of auxiliary countershaft
front bearing into case bore and against idler
plate.
NOTE: The bearing INNER RACE is installed on
front of auxiliary countershaft and never with
outer race.
B. Reassembly of Countershaft
Assemblies
2. Align keyway of gear with key in countershaft and
press the 1 st speed gear on shaft, long hub of
gear to the front of countershaft.
NOTE: Except for the PTO gears, the left and
right countershaft assemblies are identical and
reassembled in the same manner.
3. Press the 2nd speed gear on countershaft, long
hub of gear against 1st speed gear hub.
1. If previously removed, install the roll pin and key
in keyway of countershaft.
REASSEMBLY - FRONT SECTION
6. To avoid confusion during installation, mark the
end of left countershaft with an "L"; the end of
right countershaft with an "R".
4. Press the 3rd speed (or Overdrive) gear on countershaft, long hub of gear to the front of shaft.
7. Install the drive gear retaining snap ring in groove
on front of each countershaft.
5. Start the PTO gear onto countershaft, bullet-nose
side of teeth facing up and toward rear of shaft.
Align keyway of drive gear with key in countershaft and press BOTH gears onto shaft, long
hub of drive gear against PTO gear.
NOTE: The left countershaft assembly has a 47tooth PTO gear; the right countershaft assembly
has a 45-tooth PTO gear.
REASSEMBLY - FRONT SECTION
C. Partial Installation of
Countershaft Assemblies
1. Place the left countershaft assembly into position in case, making sure that the "L"-marked assembly has the larger 47-tooth PTO gear.
8. For models equipped with roller-type front
bearings, use a rubber mallet or flanged-end
driver to install bearing inner race on shaft,
shoulder of race against shoulder of countershaft.
2. Place the right countershaft assembly into position in case, making sure that the "R"-marked assembly has the smaller 45-tooth PTO gear.
IMPORTANT: Mark the countershaft drive gear for
timing purposes. On the drive gear of each countershaft assembly, mark the tooth aligned with key.
way of gear and stamped with an "O" for easy
identification. A highly visible color of toolmakers'
dye is recommended for making timing marks.
REASSEMBLY - FRONT SECTION
D. Bearing Installation of Left
Countershaft Assembly
3. C e n t e r t h e f r o n t o f l e f t c o u n t e r s h a f t i n b e a r i n g
and move the assembly forward.
1. Move the left countershaft assembly to the rear
and insert countershaft support tool or blocking
to center shaft in rear case bore.
4. Use a flanged-end bearing driver to completely
seat front bearing or bearing outer race in case
bore.
2. Use a flanged-end bearing driver to start the
bearing in case bore.
NOTE: The inner race of roller-type front bearing
is pressed on front of countershaft.
REASSEMBLY - FRONT SECTION
5. Position the retainer plate on front of left countershaft, roll pin in hole at end of shaft, and secure
with capscrew tightening to recommended torque ratings.
6. Remove countershaft support tool or blocking
from rear case bore and install the left countershaft rear bearing with larger I.D. lead chamfer to
the front of shaft and install the snap ring in
groove at rear of left countershaft.
REASSEMBLY - FRONT SECTION
E. Reassembly, Installation and Timing
of Main Drive Gear Assembly
3. Mesh
gear
drive
drive
the marked tooth of left countershaft drive
with either set of two marked teeth on main
gear. Slide the input shaft through the main
gear (inset).
1. If previously removed, install the snap ring in I.D.
of main drive gear and the bushing in pocket of
input shaft (inset).
4. Install spacer (inset) and bearing on the input
shaft with external snap ring to the outside.
2. Mark the main drive gear for timing purposes.
Mark any two adjacent teeth on drive gear and repeat the procedure for the two adjacent teeth
directly opposite the first set marked. A highly
visible color of toolmakers' dye is recommended
for making timing marks.
REASSEMBLY - FRONT SECTION
5. Tap the bearing into position in the bore with a
soft mallet.
7.
Use a soft bar and maul to drive the input shaft
through bearing. Remove front bearing cover.
F. Reassembly of Auxiliary
Drive Gear Assembly
NOTE: Because the auxiliary drive gear assembly
is used in checking reverse gear axial clearances
and centering mainshaft in rear bearing bore
during Reassembly and Partial Installation of
Mainshaft Assembly, it is necessary to complete
the following instructions BEFORE proceeding to
Part G.
6. Temporarily install the front bearing cover,
1. If previously removed, install the O-rings on extended front hub of auxiliary drive gear.
REASSEMBLY - FRONT SECTION
2.
Install the retainer ring on auxiliary drive gear,
snap ring groove facing front hub and away from
gear teeth.
4.
Install the snap ring in groove of front gear hub to
retain bearing.
G. Reassembly and Partial Installation
of Mainshaft Assembly
1. If previously removed, install the corresponding
snap rings in I.D. of mainshaft gears.
3.
Start the auxiliary drive gear bearing on front hub,
bearing snap ring facing groove in retainer ring.
Using both the inner and outer race of bearing as
a base, press the bearing on gear with snap ring
in groove of retainer ring or use a bearing driver
(inset).
REASSEMBLY - FRONT SECTION
4. Install the spacer on shaft against washer.
2. Secure the mainshaft in a vise equipped with
brass jaws or wood blocks, pilot-end of shaft
down. If previously removed, install the roll pin in
keyway.
3. Install the 3rd speed gear limit washer on mainshaft, flat side of washer up. Rotate washer in the
1st or bottom groove of mainshaft to align the
splines of washer with those of the mainshaft. install the key in mainshaft keyway to lock washer
in place.
5. Install the 3rd speed (or Overdrive) gear on mainshaft, clutching teeth down and engaged with external splines of spacer.
NOTE: Gear limit washers are internally splined
and locked to mainshaft by the key. Gear spacers
are externally splined to engage with clutching
teeth in gear hubs. There is one limit washer and
one spacer for each gear in the mainshaft assembly.
REASSEMBLY - FRONT SECTION
6. Install the 2nd speed gear on shaft against 3rd
speed (or Overdrive) gear, clutching teeth up.
8. Remove the key from keyway and install the 2nd
speed gear limit washer on mainshaft, flat side of
washer down and against spacer. Rotate washer
in the 2nd groove of mainshaft to align the
splnes of washer with those of the mainshaft
and reinsert key in keyway to lock washer in
place (inset).
7. Install the spacer in 2nd speed gear, engaging the
external splines of spacer with clutching teeth of
gear.
REASSEMBLY - FRONT SECTION
10. Install the 1st-2nd speed sliding clutch, aligning
the missing internal spline of sliding clutch with
key in mainshaft.
9. Insert two large screwdrivers between the 2nd
and 3rd speed (or Overdrive) gears to check axial
clearances. Apply slight downward pressure on
screwdriver handles to spread gears evenly. Making sure the gear hubs are parallel, insert a feeler
gage between hubs. Correct axial clearance
should be from .005" to .012". If the clearance is
less than the minimum .005" tolerance, the limit
washer in the 2nd speed gear should be replaced
by a thinner limit washer. This will increase the
axial clearance between the gears. If the clearance checked is greater than the maximum .012"
tolerance, a thicker limit washer should be installed in the 2nd speed gear. This would decrease the axial clearance between the gears.
11. Remove the key from keyway and install the 1st
speed gear limit washer on mainshaft, flat side of
washer up. Rotate washer in the 2nd groove of
mainshaft to align the splines of washer with
those of the mainshaft and reinsert key in keyway
to lock washer in place.
REASSEMBLY—FRONT SECTION
SETTING CORRECT AXIAL
CLEARANCES FOR
MAINSHAFT GEARS
Axial Clearance (End-Play) Limits Are:
.005’’ -,012” for all mainshaft gears
Washers are used to obtain the correct limits; six
thicknesses are available as follows:
LIMITS (INCH)
.248 -.250
.253 -.255
.258 -.260
.263 -.265
.268-.270
.273 -.275
*
COLOR CODE
WHITE
GREEN
ORANGE
PURPLE
YELLOW
BLACK
“PLUS RED”
*NOTE: New style limit washers come in a full range
of tolerances as corresponding colors listed above
“plus red.” (Example: “Orange plus red” limit
washer has an inch limit thickness of .258 -.260.)
Refer to Illustrated Parts Lists for washer part numbers.
Always use the .248-.250” low limit washer (’(White”
or “white plUS red”) in the 1st and 3rd speed gear Dositions as’ shown at right.
IMPORTANT: REFER TO THE APPROPRIATE iLLUSTRATED PARTS LIST (SPECIFIED BY MODEL SERIES) TO
ENSURE THAT PROPER PARTS ARE
USED DURING REASSEMBLY OF
THE TRANSMISSION.
159
REASSEMBLY - FRONT SECTION
12. Install the spacer on shaft against washer.
14. Install the LO speed gear on shaft against 1st
speed gear, clutching teeth up.
13. Install the 1st speed gear on mainshaft, clutching
teeth down and engaged with external splines of
spacer.
15. Install the spacer in LO speed gear, engaging the
external splines of spacer with clutching teeth of
gear.
160
REASSEMBLY-FRONT SECTION
17. Check axial clearance and make adjustments, if
necessary, between the LO and 1st speed gears
as described.
16. Remove the key from keyway and install the LO
speed gear limit washer on mainshaft, flat side of
washer down and against spacer. Rotate washer
in the 4th groove of mainshaft to align the splines
of washer with those of the mainshaft and reinsert key in keyway to lock washer in place (inset).
REASSEMBLY-FRONT SECTION
18. Install the LO-Reverse speed sliding clutch, aligning the missing internal spline of sliding clutch
with key in mainshaft.
19. Remove the key from keyway and install the reverse gear limit washer on mainshaft, flat side of
washer up. Rotate washer in the 5th groove of
mainshaft to align the splines of washer with
those of the mainshaft and reinsert key in keyway
to lock washer in place.
20. Install the spacer on shaft against washer.
21. Install the snap ring in 6th groove of mainshaft to
retain key in keyway.
REASSEMBLY-FRONT SECTION
22. Install the snap ring in hub of reverse gear ONLY
TO CHECK AXIAL CLEARANCE (END-PLAY)
LIMITS.
24. Install the auxiliary drive gear assembly in its
proper position on rear of mainshaft.
23. Install the reverse gear on mainshaft, clutching
teeth down and engaged with external splines of
spacer.
REASSEMBLY - FRONT SECTION
2 5 . Force both the reverse gear and auxiliary drive
gear downward on the shaft to flatten their respective snap rings. Making sure the gear hubs
are parallel, insert a feeler gage between the
hubs of the reverse gear and auxiliary drive gear.
Correct axial clearance should be from .005" to
.012". If clearance is less than the minimum .005"
tolerance, the reverse gear limit washer should be
replaced by a thinner limit washer. This will increase the axial clearance between the gears. If
the clearance checked is greater than the maximum .012" tolerance, a thicker limit washer
should be installed in teh reverse gear. This
would decrease the axial clearance between the
gears.
NOTE: THIS CHECK IS MADE WITHOUT
SPREADING THE GEARS WITH SCREWDRIVERS.
26. With the proper reverse gear limit washer installed on mainshaft, remove the auxiliary drive
gear assembly and reverse gear.
27. Remove the snap ring from hub of reverse gear
and reinstall the gear on mainshaft. Engage the
clutching teeth of gear with the splines of spacer
and sliding clutch and move the reverse gear
against the LO speed gear.
REASSEMBLY-FRONT SECTION
28. Remove the mainshaft assembly from vise. Align
the missing internal spline of 3rd-4th speed sliding clutch with key in mainshaft and install on
front of shaft, engaging the external splines of
sliding clutch with clutching teeth of 3rd speed
(or Overdrive) gear.
30. Move the pilot-end of mainshaft into pocket bushing of input shaft.
29. Block the right countershaft assembly against
case wall and lower the mainshaft assembly into
position with the reverse gear held against LO
speed gear and rear of shaft moved into case
bore.
REASSEMBLY - FRONT SECTION
H. Bearing Installation and Timing of
Right Countershaft Assembly
IMPORTANT: The left countershaft assembly
MUST remain in time with main drive gear when
timing right countershaft assembly.
31. With the reverse gear remaining against LO
speed gear, mesh the corresponding forward
speed gears of left countershaft assembly. Check
to make sure that marked tooth on left countershaft drive gear has remained in mesh with
marked set of teeth on main drive gear.
32. Center rear of mainshaft in case bore and install
the auxiliary drive gear assembly on shaft, partially seating the bearing in bore. DO NOT COMPLETE INSTALLATION AT THIS TIME.
1. Remove blocking from right countershaft assembly and place it parallel to mainshaft assembly. Mesh the marked tooth of right
countershaft drive gear with remaining set of two
marked teeth on main drive gear.
REASSEMBLY - FRONT-SECTION
2. Insert countershaft support tool or blocking in
rear bearing bore.
3. Install the right countershaft bearings in the
same manner described in Part D for left countershaft bearings.
5. Move the reverse gear to the rear on mainshaft
and use a screwdriver to engage sliding clutches
with all forward speed gears. A sliding clutch that
will not engage with a gear indicates the gear set
is not in proper mesh. The bearings of the right
countershaft would then need to be removed and
the drive gear set retimed.
NOTE: Do not engage sliding clutches with more
than one gear at the same time. This will lock the
gearing and prevent the mainshaft and countershaft
assemblies from rotating.
1. Reassembly and Installation of
Left Reverse Idler Gear Assembly
4. With bearing installation complete, install the
snap ring in groove at rear of right countershaft.
NOTE: Since the left and right reverse idler gear
assemblies are identical, reassembly and installation of the left reverse idler gear assembly should
be performed at this time as described in Part A
of this section.
REASSEMBLY - FRONT SECTION
J. Completed Installation of Mainshaft
and Auxiliary Drive Gear Assemblies
1. Remove the auxiliary drive gear assembly from
mainshaft and rear bearing bore. Do not allow
mainshaft to move to rear when removing auxiliary drive gear.
3. Align the external splines of spacer with clutching teeth of reverse gear and move spacer
forward on mainshaft and into gear.
4. Install the snap ring in hub of reverse gear and
move the reverse gear forward on mainshaft and
into proper position in case.
2. Move the reverse gear to the rear as far as possible, meshing teeth of gear with those of the reverse idler gears.
REASSEMBLY - FRONT SECTION
5. Reinstall the auxiliary drive gear assembly on rear
of mainshaft. Use a flanged-end driver and maul
to seat bearing in case bore.
7.
Install the snap ring in groove at end of mainshaft.
K. Installation of Drive Gear Nut
and Front Bearing Cover
6.
Align the six capscrew holes in retainer with the
tapped holes in case and install capscrews.
Tighten to recommended torque ratings and lockwire the capscrews in groups of three.
1. Apply Loctite grade 277 sealant to cleaned
threads of new drive gear bearing nut. DO NOT
REUSE OLD NUT.
NOTE: For models equipped with a snap ring to
retain bearing, install the snap ring in groove of
input shaft and proceed to No. 4.
REASSEMBLY-FRONT SECTION
2. Engage two mainshaft sliding clutches into gear
to prevent transmission from rotating.
4. If previously removed, install the oil seal in drive
gear bearing cover of models so equipped.
3. Install the nut on shaft (left hand threads). Using
a drive gear nut installer, tighten to 250-300 lbs/ft
of torque. Use a punch and maul to peen the nut
into the two milled slots of input shaft.
5. Install the drive gear bearing cover and gasket,
making sure to align the oil return hole in case.
Secure cover on case with retaining capscrews
(inset).
INSTALLATION
- COMPANION FLANGE,
AUXILIARY SECTION AND CLUTCH HOUSING
COMPANION FLANGE, AUXILIARY SECTION
AND CLUTCH HOUSING
A. Installation of Clutch Housing
1. Position the corresponsing new gasket on housing mounting surface and install the clutch housing on front case, piloting on the six studs and
drive gear bearing cover.
2. Install the six nuts with washers on studs and tighten
in cross-pattern. See TORQUE RECOMMENDATIONS.
3. Install the four capscrews and tighten in crosspattern. See TORQUE RECOMMENDATIONS.
4. For models so equipped, install the clutch release mechanism and/or clutch brake assembly.
See OPTIONS.
INSTALLATION-COMPANION FLANGE,
AUXILIARY SECTION AND CLUTCH HOUSING
B. Installation of Auxiliary Section
NOTE: Make sure the bearing inner race is installed on front of each auxiliary countershaft BEFORE proceeding with the following.
1. Attach a chain hoist to auxiliary. Move the assembly evenly into rear of front case, piloting it
on the dowel pins. As assembly is moved
forward, the countershaft drive gears will mesh
with the auxiliary drive gear.
IMPORTANT: On 8-speed "L" model auxiliary
sections, shift the deep reduction sliding clutch
into deep reduction before installing auxiliary.
This will prevent possible timing error.
2. Install the retaining capscrews in flange of auxiliary pIate/housing and tighten to secure the auxiliary section to the front section. See TORQUE
RECOMMENDATIONS.
3. The auxiliary section can also be installed with
transmission set in the vertical position. Block
under the clutch housing to prevent damage to
the input shaft, position the corresponding new
gasket on plate/housing mounting surface and
lower the assembly onto rear of front case. Install
the retaining capscrews and tighten securely. See
TORQUE RECOMMENDATIONS.
IMPORTANT: On 8-speed "LL" model auxiliary
sections, shift the deep reduction sliding clutch
into deep reduction before installing auxiliary.
This will prevent possible timing error.
INSTALLATION - COMPANION FLANGE,
AUXILIARY SECTION AND CLUTCH HOUSING
C. Installation of Universal Joint
Companion Flange or Yoke
1. For models so equipped, install the speedometer
drive gear or replacement spacer in position on
hub of companion flange or yoke. Install the companion flange or yoke on splines of output shaft
and move into rear bearing cover.
NOTE: For 14608LL models, the speedometer
drive gear or replacement spacer is installed on
output shaft prior to installation of rear bearing
cover.
2. Lock the transmission by engaging two mainshaft gears with sliding clutches. Install the
washer and/or nut on output shaft and tighten nut
using 450-500 lbs/ft of torque.
INSTALLATION SHIFTING CONTROLS
SHIFT BAR HOUSING ASSEMBLY
A. Installation
1. Place all three mainshaft sliding clutches in the
neutral position.
Install the new shift bar housing gasket in position on case.
2. With all three shift bars in the neutral position, install the shift bar housing assembly on case, fitting the shift yokes into slots of corresponding
sliding clutches.
NOTE: Avoid tilting the assembly during installation
as the three sets of tension springs and balls are
free to be released from bores in top of housing.
3. Install the capscrews in housing and tighten to
secure the assembly to case.
lNSTALLATIONSHIFTING CONTROLS
GEAR SHIFT LEVER HOUSING ASSEMBLY
A. Installation
NOTE: For models equipped with a LRC or SRC
Assembly, the housing is installed in the same
manner described in the following instructions.
3. Install the retaining capscrews in housing flange
and tighten to secure the assembly to shift bar
housing.
1. Check the shift bar housing assembly to make
sure shift block and yoke notches are aligned in
the neutral position.
2. Install the new gear shift lever housing gasket in
position on shift bar housing and install the gear
shift lever housing assembly on shift bar housing, fitting the lever into shift bar and yoke
notches.
INSTALLATION SHIFTING CONTROLS
AIR SYSTEM
A. Installation of Slave Valve
3. Install the hat-type alignment sleeve in bore of
slave valve.
1. If previously removed, install the air line fittings
on slave valve.
4. Position the corresponding new gasket on valve
mounting surface and install the slave valve on
case, inserting the end of actuating pin into alignment sleeve. Secure the valve to case with four
2. Install the spring on shank of actuating pin and
insert in bore of transmission case.
retaining capscrews tightened evenly.
B. Installation of Air Lines
(See Air System Schematics on pages 40-47.)
Tapered Roller
Bearing Shimming Procedure
Note: The auxiliary section may be shimmed in either the vertical or horizontal position. Vertical
shimming is performed with the transmission removed from the truck while horizontal shimming takes
place with the transmission still in the truck.
1
Before installing the auxiliary
section, install countershaft
straps on each countershaft.
Use three (3) 3/8" x 1" capscrews
for each strap.
2
For vertical shimming, place the
transmission in the vertical position.
Place (2) wood blocks under the
clutch housing to prevent the transmission from tipping and damaging
the input shaft. Place the auxiliary
housing on the front box.
3
Install the auxiliary housing
capscrews. Tighten to the recommended torque.
4
Remove each countershaft strap.
5
Install the .125 gaging shim and
the countershaft bearing cover.
Make sure the shim is properly
aligned on the bearing race.
6
Use two (2) 3/8" x 1" capscrews
without lock washers. Install the
capscrews directly across from
each other.
7
Tighten to 7 in. lbs. of torque.
Do not over torque. Incorrect
readings will be produced.
Make sure the countershaft
rear bearing cover gaskets
have been removed.
8
Rotate the output shaft six times
in the clockwise direction, then
six times counterclockwise to
properly seat the bearings. Use a
feeler gauge to measure the
clearance between the shim
gauge and auxiliary housing
surface near each capscrew
location. Record each
measurement and average the
two measurements. Refer to the
Shimming Endplay Chart
and select the number in the
left column which corresponds to
the average measurement which
was achieved. Follow the column
to the right to determine the
proper thickness and shim
required. Note part number and
shim color. Repeat this procedure
for the other countershaft.
9
After the correct shim has been
selected, place the shim on the
rear countershaft bearing race,
install the countershaft rear
bearing gasket and cover. Check
for proper shim alignment. If
misaligned, the bearing cover
may be damaged when final
torque is applied to cover
capscrews. Perform the same
procedure on the other rear
countershaft.
Copyright Eaton Corporation, 2012.
Eaton hereby grant their customers,
vendors, or distributors permission
to freely copy, reproduce and/or
distribute this document in printed
format. It may be copied only in
its entirety without any changes or
modifications. THIS INFORMATION
IS NOT INTENDED FOR SALE OR
RESALE, AND THIS NOTICE MUST
REMAIN ON ALL COPIES.
Note: Features and specifications
listed in this document are subject to
change without notice and represent
the maximum capabilities of the
software and products with all options
installed. Although every attempt has
been made to ensure the accuracy of
information contained within, Eaton
makes no representation about the
completeness, correctness or accuracy
and assumes no responsibility for
any errors or omissions. Features and
functionality may vary depending on
selected options.
For spec’ing or service assistance,
call 1-800-826-HELP (4357) or visit
www.eaton.com/roadranger.
In Mexico, call 001-800-826-4357.
Roadranger: Eaton and trusted partners
providing the best products and services in the
industry, ensuring more time on the road.
Eaton Corporation
Vehicle Group
P.O. Box 4013
Kalamazoo, MI 49003 USA
800-826-HELP (4357)
www.eaton.com/roadranger
Printed in USA
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