Gearmore L-60-60-HD Operation, Service & Parts Manual

ROTARY
MOWER
Operation, Service
& Parts Manual For
L-60-60-HD, L-72-60-HD,
& L-84-80-HD
June 2001
FORM: HD RotaryMowerBk.QXD
TABLE OF CONTENTS
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Set-up Instructions . . . . . . . . . . . . . . . . . . . . . .2-3
Preparation & Training . . . . . . . . . . . . . . . . . . . .4
Operational Safety . . . . . . . . . . . . . . . . . . . . . .5-6
Maintenance Safety . . . . . . . . . . . . . . . . . . . . . . .7
Mower Safety Decals . . . . . . . . . . . . . . . . . . . . . .8
General Maintenance . . . . . . . . . . . . . . . . . . . . .9
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . .10
Mower Assembly . . . . . . . . . . . . . . . . . . . . . .11-12
Gearbox Assembly . . . . . . . . . . . . . . . . . . . .13-16
Blade Carrier Assembly . . . . . . . . . . . . . . . . . . .17
Driveline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . .19
Date of Purchase:_____________________________
Model Number:_______________________________
Serial Number _______________________________
INTRODUCTION
We welcome you as an owner of a Gearmore mower. Please read the
following instructions and refer to them when required:
BEFORE OPERATING YOUR MOWER
1.
Inspect for damage and loose or missing parts. Make sure all fittings and
drive components are secure.
2.
Lubrication (See Lubrication Section).
3.
Remove all large, foreign objects from area being mowed.
TO OPERATE MOWER
1.
Connect mower to the tractor 3-point hitch lower link arms. (Make sure
tractor and mower are on a level surface.)
2.
Connect top link of tractor to mower and adjust turnbuckle so the mower
is level with the ground.
3.
Install driveshaft after making sure it is the correct length. (See separate
warning sheet on the correct method of achieving the proper driveshaft
length.)
4.
Set height of tailwheel based on what height you want to cut. Example:
The blades are set 1” above the skids. Thus, if you want a 2” cut, you
would set tailwheel so skids are 1” above ground.
NOTE:
The mower is designed to float on the tailwheel and mower 3point hitch, so the mower should not be dragged on the ground.
5.
Set height stops on the tractor 3-point lift so mower will not be raised
higher than necessary. Failure to do this could cause damage by putting
excessive angle on the driveshaft.
6.
Engage the tractor PTO when tractor engine is at idle speed. Engaging the
PTO with engine at full speed will reduce the life of the driveshaft. For
most cutting operations, a ground speed of 3 to 5 MPH and PTO at full 540
RPM is recommended.
Page 1
SET-UP INSTRUCTIONS
L-60-60-HD
1.
Bolt the a-frame to inside of uprights and the lift arms to outside of
uprights (Ref. #1 & 2). Leave bolts loose.
2.
Install lift arm brace (Ref. #3) to rear tailwheel a-frame using longer
bolts supplied. Leave bolts loose.
3.
Install top swivel to front a-frame in the following order, using round
bushing and swivel, as shown in picture. You may need to trim round
bushing if it extends out to far.
4.
After everything is assembled, proceed with tightening down all loose
hardware with an impact gun.
Page 2
SET-UP INSTRUCTIONS
L-72-60-HD & L-84-80-HD
1.
Bolt the clevis hitch brackets (Ref. #1) to the outside of the vertical frame
and the a-frame uprights (Ref. #2) to the inside of the vertical frame.
Leave bolts loose.
2.
Mount the rear braces (Ref. #3) to the inside of the rear mounting ear.
Leave bolts loose.
3.
Install the long bolt on the front of the rear brace a-frame upright, and
the swivel and bushing (Ref. #4). If the bushing needs to be trimmed,
make sure to leave enough so that is protrudes out of the swivel 1/8”
each side to allow free movement. The swivel should be mounted with
the flat plate on the bottom side.
4.
Tighten all bolts that you have loosened and installed.
5.
Mount ratchet jack (Ref. #5) to the cross axle and the other end
to mounted ear on deck.
6.
Add gearlube to gearbox and grease tailwheel assemblies.
4
5
3
2
1
Page 3
PREPARATION
READ THIS BEFORE OPERATING MOWER
TRAINING
Know your controls and how to stop tractor engine and mower quickly in an
emergency. READ THIS OPERATOR’S MANUAL AND THE MANUAL
PROVIDED WITH YOUR TRACTOR.
To avoid accident or injury, do not allow anyone to operate this equipment without
proper instructions. Any person who operates this equipment must be instructed in
and be capable of the safe operation of the unit, its attachments and all controls.
DO NOT allow children to operate machine, or adults to operate it without proper
instructions.
BEFORE OPERATION
Always wear relatively tight and belted clothing when operating
mower. Loose clothing should not be worn, as it could get caught in
the moving parts or controls. Wear sturdy, rough-soled work shoes
and protective equipment for eyes, hands, hearing and head. Never
operate tractor or implements in bare feet, sandals or sneakers.
Never permit any person other than the operator to ride on board the
tractor at any time. DO NOT allow riders on mower at any time.
Clear area of stones, branches or other debris that might be thrown,
causing injury or damage.
Operate only in daylight or good artificial light.
Ensure mower is properly mounted, adjusted and in good operating
condition.
Ensure all PTO and other safety shielding is properly installed and in good
condition.
Page 4
OPERATIONAL SAFETY
Guards and safety shields are for your protection. DO NOT operate
equipment unless they are in place.
Read and observe all safety decals on the tractor and mower (see page7).
Always operate tractor PTO (power take-off) at recommended
RPM (revolutions per minute).
Stay away from PTO shaft and mower when
engaging PTO.
Disengage tractor PTO and shift into neutral
before attempting to start engine.
NEVER allow anyone within 25’ of machine
while it is in operation.
DO NOT stop or start suddenly when going uphill
or downhill. Avoid operation on steep slopes.
Be alert for holes in terrain and other hidden hazards.
Always drive slowly over rough ground.
Reduce speed on slopes and in sharp turns to prevent
tipping or loss of control. Be careful when changing
direction on slopes.
Stop mower and tractor immediately upon striking
an obstruction. Turn off engine, inspect mower and
repair any damage before resuming operation.
Disengage power to mower and stop engine before dismounting from tractor,
before making any repairs or adjustments, transporting, or unclogging mower.
Take all possible precautions when leaving tractor unattended. Disengage
PTO, lower mower, shift into neutral, set parking brake, stop engine and
remove key from ignition.
Page 5
OPERATIONAL SAFETY
Continued....
Front tractor weights or front tire ballast should be used to enhance front end
stability on small tractors.
NEVER operate mower in raised position.
Check to make sure PTO is properly connected
and that the driveline is correct to prevent
bottoming out or pulling apart during the full
lift range of the hitch.
This implement is designed for a one-man operation. It is the responsibility
of the tractor operator to see that no one is in the proximity of the implement
when it is started. DO NOT operate the implement when another person is
within 25’ of the implement.
NEVER put hands or feet under mower deck
while tractor engine or mower is running.
Page 6
MAINTENANCE SAFETY
Support the mower with safety stands or blocks before working beneath it.
Follow good shop practices:
A. Keep service area clean and dry.
B. Be sure electrical outlets and tools
are properly grounded.
C. Use adequate light for the job at
hand.
Use only tools, jacks and hoists of sufficient capacity for the job.
NEVER work on the mower unless the tractor engine is off and the
driveline is disconnected.
ALWAYS wear heavy canvas or leather gloves when handling mower
blades.
NEVER wear loose or frayed clothing when working on moving parts.
(i.e. gearbox, blade pan, driveline, etc.)
Make sure all guards are in place and properly secured when all
maintenance work is completed.
Page 7
MOWER SAFETY DECALS
1.
Keep all safety decals and signs clean and legible at all times.
2.
Replace safety decals and signs that are missing or have become illegible.
(Contact Gearmore at 909.548.4848 for free replacement safety decals.)
Page 8
GENERAL MAINTENANCE
Carefully follow all instructions as stated in this manual. This includes operation,
lubrication, safety and maintenance. This mower was designed and built for years
of reliable service if properly cared for. However, rotary mowers are a high RPM
machine, thus daily attention is required.
9
9
9
Check all bolts for tightness.
9
9
Check lubrication - see lubrication section.
Check to make sure all safety guards are in place.
Check to remove any trash build-up.
Check blades to make sure they are securely fastened.
SERVICING BLADES
When replacing or grinding blades, both blades must be replaced or re-ground at
the same time to maintain the proper balance in the mower. Gearmore mowers
are equipped with special heat-treated alloy steel blades. Use only Gearmore
blades, substitutes may be dangerous. NEVER try to straighten or weld blades.
LUBRICATION
DRIVESHAFT - The driveshaft must be lubricated before mower is put into use.
After that, grease every 8 hours of use or when required. It is also necessary, from
time to time, to untelescope the driveshaft to clean and re-grease tubing.
GEARBOX - Check gearbox oil level through square headed screw plug. Add
SAE 90 weight oil when required. Change gearbox oil after every 400 hours of use.
TAILWHEEL - Grease every 8 hours of use or when required.
TAILWHEEL PIVOT TUBE - Grease weekly or when required.
To comply with OSHA AG Guarding Standard #1928.27, the following guards and
shields must be kept in place and in good working condition:
1. Safety chain shielding
2. Driveshaft shields
3. Guards over moving parts
BE CAREFUL AND ALWAYS THINK SAFETY FIRST!
Page 9
TROUBLESHOOTING
CAUSE
PROBLEM
Excessive vibration
Unusual noise
Poor cutting
PTO turns and
blades do not
PTO will not
telescope
PTO twisted
Machine streaking
SOLUTION
Blades are not free to swing.
Check bushings and
movements of blades.
Blades are out of balance.
Check blades for damage
or replace.
Loose blade bolts or worn bushings.
Tighten blade bolts, check
bushings for wear and change
as needed.
Bent blade carrier, blades
striking deck.
Replace blade carrier.
Deck bent causing blades to hit.
Straighten deck.
Gearbox low of oil.
Check seals in gearbox and fill
to proper level.
Not maintaining proper PTO speed.
Check PTO with tachometer
and operate at proper RPM.
Improperly adjusted.
Adjust according to Operators
Manual.
Forward speed too fast.
Coordinate forward speed with
blade speed.
Dull blades.
Sharpen blades.
Gears stripped in gearbox.
Replace or repair gearbox.
Shear bolt sheared.
Replace shear bolt.
Improper lubrication.
Separate and fill female tube
half full of grease.
PTO twisted.
Replace twisted portion.
Bent PTO.
PTO too long. Size to tractor
according to manual.
Shields damaged.
Replace.
Over torqued.
Caution operator not to
ground out machine.
Not maintaining correct PTO speed.
Maintain proper PTO speed.
Cutting too high, leaving wheel
tracks.
Cut lower and slow forward
speed down.
Not maintaining proper RPM
speed.
Maintain proper RPM
speed.
Page 10
MOWER ASSEMBLY L-60-60-HD
REF#
QTY.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
1
1
1
1
1
2
1
2
2
1
1
2
1
1
PART NO.
DESCRIPTION
403001
403021
191100
403015
310612
184065
310074
147248
403656
500002
114045
501090
101210
501280
501100
Tire and Rim
Tailwheel Fork
Hub Assembly
A-Frame, Tailwheel
Adjustment Strap
Gearbox 60 H.P.
Lift Arm Braces
PTO Driveline
Lift Arm
Lift Pin Cat. II
Safety Decal
Swivel Top Link
Bolt 3/4” x 2-1/2”
Axle Bolt
Bushing
Page 11
MOWER ASSEMBLY L-72 & L-84
REF#
1
2
3
4
4
5
5
6
6
7
8
9
10
11
12
13
14
15
16
L-72
QTY.
L-84
QTY.
2
2
2
1
2
2
2
1
2
1
2
1
2
1
1
1
4
2
2
1
1
2
1
2
1
2
1
1
1
4
2
2
PART NO.
DESCRIPTION
403001
403021
191100
403567
403569
184065
184080
310619
310609
147248
403658
403402
500002
114045
195170
501608
101210
501280
501100
Tire and Rim
Tailwheel Fork
Hub Assembly
Cross Axle Assembly
Cross Axle Assembly
Gearbox 60 H.P.
Gearbox 80 H.P.
Lift Arm Braces
Lift Arm Braces
PTO Driveline
Lift Arm
Swivel, Top Link
Lift Pin Cat. II
Safety Decal
Ratchet
Swivel, Top Link
Bolt 3/4” x 2-1/2”
Axle Bolt
Bushing
Page 12
60 HP GEARBOX ASSEMBLY L-60 & L-72
Page 13
60 HP GEARBOX ASSEMBLY L-60 & L-72
REF#
QTY.
PART NO.
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
1
1
1
1
2
2
1
1
2
2
1
1
1
1
1
2
2
1
1
131050
185026
501110
186015
LM603049
LM603014
129020
185035
363
368
186022
35X60X10
131040
131035
129025
124133
124134
50X68X9
129030
Spacer 1/4”
Input Gear
1” Castle Nut
Input Shaft
Bearing Cone
Bearing Cup
Housing
Output Gear
Bearing Cup
Bearing Cone
Output Shaft
Oil Seal
1/8” Pipe Plug
1/2” Pipe Plug
Cover, Input
Gasket
Gasket
Oil Seal
Cover, Output
Page 14
80 HP GEARBOX ASSEMBLY L-84
Page 15
80 HP GEARBOX ASSEMBLY L-84
REF#
QTY.
PART NO.
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
131035
35X60X10
1/2”
129025
124133
LM603014
LM603049
185015
131025
186040
185035
362A
368
186035
362
124134
50X68X9
129030
501110
Vented Pipe Plug
Seal Input
1/8” Pipe Plug
Endcap Input
Gasket Input
Bearing Race Input
Bearing Input
Spacer
Gear Input
Snap Ring
Shaft Input
Gear Output
Bearing Race Output
Bearing Output
Shaft Output
Bearing Race Output
Gasket Output
Seal Output
Endcap Output
1” Castle Nut w/Wshr & Cot. Pin
Page 16
BLADE CARRIER ASSEMBLY
REF#
QTY.
1
2
2
3
3
1
2
2
1
1
PART NO.
DESCRIPTION
501002
190224
190230
403041
403033
Blade
Blade
Blade
Blade
Blade
Bolt Assembly, Pair
L-60-60-HD
L-72-60-HD & L-84-80-HD
Carrier L-60-60-HD & L-72-60-HD
Carrier L-84-80-HD
Page 17
PTO DRIVELINE 147248
REF#
QTY.
PART NO.
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
1
2
1
1
1
1
1
1
1
1
1
1
8
1
1
2
1
1
1
1
8
572050351
41205
204056860
341053000
125121200
125091200
341002000
204056861
403000001
240003051
638141001
5F05121FF
351013370
253052001
258005320
247000054
515200311
408000060
248220008
248220007
432000006
Yoke 1-3/8" 6 Spline
Cross Journal Kit #5
Yoke, Outer Tube
Roll Pin O.T.
Tube, Outer Drive
Tube, Inner Drive
Roll Pin I.T.
Yoke, Inner Tube
Pin Kit
RS Collar Kit
Slip Clutch Assembly FF-1
Complete Shield (not shown)
Spring 7mm
Flanged Yoke
Bushing
Lining 140mm
Hub 1-3/8" 6 Spline
Threaded Bolt Assembly
Pressure Plate
Cover
Bolt & Nut
Page 18
LIMITED WARRANTY
GEARMORE, INC., warrants each new Gearmore product to be free from defects in material and workmanship for a period of twelve (12) months from date of purchase to the original
purchaser. This warranty shall not apply to implements or parts that have been subject to
misuse, negligence, accident, or that have been altered in any way.
Our obligation shall be limited to repairing or replacement of any part, provided that such
part is returned within thirty (30) days from date of failure to Gearmore through the dealer
from whom the purchase was made, transportation charges prepaid.
This warranty shall not be interpreted to render us liable for injury or damages of any kind or
nature, direct, consequential or contingent, to person or property. This warranty does not
extend to loss of crops, loss because of delay in harvesting or any other expenses, for any
other reasons.
Gearmore in no way warranties engines, tires, or other trade accessories, since these items
are warranted separately by these respective manufacturers.
Gearmore reserves the right to make improvements in design or changes in specification at
any time, without incurring any obligations to owners or units previously sold.
GEARMORE, INC.
13477 Benson Ave.
Chino, CA 91710
Always refer to and heed machine operating warning decals on machine.
The serial number of this product is stored in our computer database, thus
submitting a warranty registration card is not required.
Page 19