January, 1960

January,  1960
January, 1960
CONTENTS
INFORMATION:
ROUGH EDGES - MODEL C PLASTIC CARD HOLDERS AND
CARBON RIBBON CORNER GUIDES
NEW PLASTIC FOR IBM PLATE WRITING RIBBON SPOOLS
STRONGER FABRIC RIBBON ANCHOR CLIP SPRING
LOOSE NYLON FABRIC RIBBON FEED AND REVERSE GEARS
BREAKAGE OF RIBBON LIFT BAIL MOUNTING STUD
SHIFT LOCK FAILURE TO RESTORE
SHIFT TOGGLE PLATE ASSEMBLIES - FIELD REPLACEMENT
INTERMITTENT TYPE PILING
SPACEBAR CLIP INTERFERENCE WITH KEYBUTTONS
CRIPPLING 3-UNIT SPACEBAR TYPAMATIC ACTION
TOOL NUMBER AVAILABLE FOR VALVESPOUT OILER RESERVOIR
POSITIONING OF VALVESPOUT OILER SPOUT
FAILURE OF R. H. CARRIAGE END COVER TO CLOSE
IMPROVED FUNCTIONAL CAM OPERATION
INTERFERENCE WITH L1NELOCI< SPRINGS
REDESIGNED COVER LATCHES
CARRIAGERETURNTAPEWEAR - ANTI-WHIPGUARDSLEEVE
FABRIC RIBBON BUNCHING
ROUGH EDGES - MODEL C PLASTIC CARD HOLDERS AND CARBON RIBBON CORNER GUIDES
Check plastic card holders and wire carbon ribbon corner guides on
the Model C ET for possible sharp edges. Dressing these parts smooth
is recommended. The flat file can be used for this purpose.
Th is condition has been corrected on current machine production.
NEW PLASTIC FOR IBM PLATE WRITING RIBBON SPOOLS
Polypropylene plastic is now being used in the fabric ribbon spools
of IBM plate writing ribbons. These spools are not affected by the
chemical properties of the ink in plate writing ribbons and can be
identified by the increase in flexibility over the former spools.
'
STRONGER FABRIC RIBBON ANCHOR CLIP SPRING
A stronger fabric ribbon anchor cl ip spring is now being used to
double the anchor clip's holding force. The new spring carries the
same part number (1118357) as the former spring.
LOOSE NYLON FABRIC RIBBON FEED AND REVERSE GEARS
; -lylon ribbon feed and reverse gears Part No. 1118312 are now
being drilled and tapped all the way through. This will provide an
additional hole which may be used to secure the gear if the original
hole becomes stripped.
This is a temporary change to reduce the necessity of replacing the
gear. A permanent modification is being made.
BREAKAGE OF RIBBOr-l LIFT BAIL MOUNTING STUD
The ribbon lift bai I mounting stud lock nut Part No. 7341 has been
changed to elastic stop nut Part No. 103372 to eliminate breakage
of the stud due to excessive torque. The torque on the stud has also
been reduced on the line.
SHIFT LOCK FAILURE TO RESTORE
Occasional shift lock failure to restore on Executive machines may
be traced to excess end play in the 5-unit selector bail Interfering
with movement of the shift lock. The end play in the bai' may be
reduced by removing the C-c1 ip on its R. H. end and substituting
feed roll clip Part No. 1110093.
2
SHIFT TOGGLE PLATE ASSEMBLIES - FIELD REPLACEMENT
The entire shift toggle shaft assemblyshould be replaced if it is necessaryto replace the right hand or left hand shift toggle plate assembly. The individual plate assemblies are drilled as a set for accuracy
and are consequently not interchangeable.
INTERMITTENT TYPE PILING
Intermittent type piling can be caused by the tab decelerator bellcrank Part No. 1117428 catching on the tab rack spring guard screwheads. This may be corrected by careful forming of the bellcrank
toward the front of the machine.
SPACEBAR CLIP INTERFERENCE WITH KEYBUTTONS
If the spacebar shaft retainer clip is turned on the spacebar shaft
assembly so that the open portion of the clip is up, the clip can
sometimes interfere with the keybuttons, locking both the keylever
and spacebar. The open portion of the clip should be down.
CRIPPLING 3-UNIT SPACEBAR TYPAMATIC ACTION
Occasionally someone requests that the repeat action of the 3-un it
. spacebar be crippled. An easy way to do this is to use one of the
basket shipping grommets. Cut off the "handle" end of the grommet
and slip the slotted portion over the front frame in the notch below
the keylever. The grommet will not come off and it provides a good
stop.
TOOL NUMBER AVAILABLE FOR VALVESPOUT OILER RESERVOIR
The oil reservoir of the Valvespout Oiler Part No. 9900034 has been
assigned Part No. 9900108. It is now available under this number
for Field replacement needs. The replacement of the spout will necessitate ordering the entire oiler.
POSITIONING OF VALVESPOUT OILER SPOUT
The Valvespout Oiler Part No. 9900034 spout tends to go past the
center position after the oiler has been filled several times, preventing the spout from lying flat in the service case. This can be
remedied by placing washers between the reservoir and the spout.
Washer Part No. 1106172, washer Part No. 1078497, or a combination of these may be used. The thickness of the washer or washers will determ ine the amount of correction.
3
FAILURE OF R. H. CARRIAGE END COVER TO CLOSE
Failure of the R. H. cdrriage e~d cover to completely close may be
caused by the upright ear of the R. H. platen latch hitting the hinge
of the R. H. carriage release lever button. The ear of the platen
latch may be formed outward to eliminate this condition.
IMPROVED FUNCTIONAL CAM OPERATION
Action has been taken to improve functional cam operation through
improved adjustment of the components, ultra high frequency sonic
cleaning and centerless ground shafts. Cams installed in Standard
machines above serial number 1212755 and Executive serial number
2029026 have received this handling.
INTERFERENCE WITH LlNELOCK SPRINGS
The actuating arm of the carriage return key lock may interfere with
the linelock bar springs. If this condition exists, it may be necessary
to form the portion of the carriage return keylock that contacts the
switch lever indicator.
REDESIGNED COVER LATCHES
Cover latches have been redesigned to latch the cover down more
securely. The new latches have the same part number as former
latches.
CARRIAGE RETURN TAPE WEAR - ANTI-WHIP GUARD SLEEVE
A polyethylene sleeve Part No. 1263965 is available for field installation on· the anti-whip guard of the clutch latch bracket. The
sleeve will eliminate the possibility of the return tape whipping out
from under the guard and becom i ng frayed.
FABRIC RIBBON BUNCHING
Ribbon riding over or under the sensing finger results from ribbon
bunching in front of the sensing finger and may be corrected by increasing spool drag as outl ined in Newsletters 63 and 67. This condition usually occurs after the ribbon has been transferred from one
spool to the other many times and most frequently on automatic operation.
4
January, 1960
CONTENTS
INFORMATION:
SUBSTITUTION OF TYPE STYLES - SPECIAL CHARACTERS
LOOSE REPOSITIONING INDICATOR LEVER MOUNTING
SCREW
POWER ROLL DATE CODING
RIBBON DRIVE AND REVERSE GEAR SLEEVE
LUBRICATION OF CARBON
CLUTCH
RIBBON TAKE-UP SPRING
IMPROVED BACKSPACE LINK
LETTER CAM ASSEMBLIES - CAM RESTORING SPRING HOLE
DECIMAL TAB CAGE LUBRICATION
SERVICE HINTS:
MODEL
"e"
CARD HOLDER ADJUSTING
SPRING SCREW STARTER USE TO REPLACE CLUTCH PLATE
---iBM---
SUBSTITUTION OF TYPE STYLES - SPECIAL CHARACTERS
Substitution of available characters from a companion type style may
avoid the necessity of ordering new type matrices . However, because of conspicuous differences in appearance between type styles,
special characters that appear in combination with numerical or alphabetical characters cannot be substituted. Special attention must
be given to Executive type, since there is a variation in writing line
between most Executive type styles. The writing line is based on the
center of the capital letter. The center of the capital letter will
vary with the capital height, as the center line is approximately 45'10
of the capital height. For example, Copper-Plate #2 type has a
capital height of .079" and Heritage type has a capital height of
.096". Therefore, the difference in writing lines between CopperPlate #2 and Heritage type styles is .0085".
Listed below are some type styles matched with suitable companion
styles from which special characters may be substituted:
Elite may be substituted for Prestige Elite.
Pica may be substituted for Prestige Pica.
Elite Gothic or Artisan No. 12 may be substituted for Manifold
No. 12.
Pica Gothic or Artisan No. 10 may be substituted for Manifold
No. 10.
Medium Roman Gothic may be substituted for Manifold No.9.
Large Roman Gothic may be substituted for Manifold No.8.
Manifold No. 12 or Elite Gothic may be substituted for Artisan
No. 12.
Manifold No. 10 or Pica Gothic may be substituted for Artisan
No. 10.
LOOSE REPOSITIONING INDICATOR LEVER MOUNTING SCREW
A thinner washer Part No. 1090222 is now used in place of repositioning indicator lever washer Part No. 1090269 under the repositioning indicator screw Part No. 1110241. This permits crimping of
the screw threads after installation to prevent loosening.
POWER ROLL DATE CODING
The plant is now date coding all power rolls. Coding on power roll
Part No. 1117828 began on 12-15-59 and Part Numbers 1001328
and 1071300 coding began on 1-4-60.
2
This coding can be found on the power roll between the backspace
cam and letter cam 43. The first one or two digits indicate the month
of manufacture and the last digit the year of manufacture. Thus, a
power ro II manufactured duri ng January of 1960 wou Id carry a 1-0
code number and a December 1960 power roll a 120 code number.
It should be kept in mind that power rolls should be stored in a vertical position and shelf Iife should not exceed six months for maximum performance.
RIBBON DRIVE AND REVERSE GEAR SLEEVE
A metal sleeve is being installed over the hub of the nylon ribbon
drive and reverse gear Part No. 1118312 to provide additional thread
strength and eliminate stripping of set screw threads. A longer set
screw Part No. 1115092 is required with this sleeve.
LUBRICATION OF CARBON RIBBON TAKE-UP SPRING CLUTCH
The carbon ribbon friction take-up spring clutch is lubricated in the
plant with #17 grease. It is imperative that additional grease be
added as required during inspections to prevent rust. The vinyl cover
on the spring should not be removed as its only purpose is to prevent
erasures and dirt from causing binds in this mechanism.
IMPROVED BACKSPACE LINK
An improved backspace link is now being incorporated In Standard,
Executive and Lift Platen H'S. This I ink has a formed offset for the
purpose of compensating for excess strain on the backspace bellcrank
and bellcrank stud. The new I ink replaces the straight Iink effective
Standard machine serial number 1238714 and Executive serial number
2035211. The part number of the link remains the same.
LETTER CAM ASSEMBLIES - CAM RESTORING SPRING HOLE
The hole in which the cam restoring spring is attached was recently
changed to a slot. Due to the possibility of the springs becoming
disengaged a change back to the hole is being processed.
DECIMAL TAB CAGE LUBRICATION
The decimal tab interposer cage slots should be lubricated lightly
with IBM #6 oil during inspections. This is required to eliminate the
possibility of corrosion in the slots.
3
MODEL C CARD HOLDER ADJUSTING
The Model C rear cover mounting screw Part No. 1117337 makes a
useful tool for adjusting the line gage card holder. Just below the
mounting screws of the card holder are four slots in the front rail
dust cover. They are used for adj usti ng the cI earance between the
platen and the card holder. A screwdriver can be used for adjusting
the outside mountings and for moving the inside mountings closer to
the platen but cannot be used to bring the card holder away from the
platen. By inserting the head of a rear cover screw in the dust cover
slot and using the screw as a lever the card holder can easily be
brought away from the platen.
SPRING SCREW STARTER USE TO REPLACE CLUTCH PLATE
Due to the lim ited space between the machine frame and the bottom
case it is difficult to replace the clutch plate and insert assembly
{Part No. 1071425} on the Model C ET. The spring screw starter may
be used as a holding device to lower it into position. This saves
fumbling.
4
February 24, 1960
MODIFIED INTERNAL PLUG ELIMINATES WIRE CUTTING
All Model C Standard and Executive machines are being shipped
with a hooded and modified internal plug and cord assembly (Part
No. 1117600). This change became effective with Standard serial
number 1232911 and Executive serial number 2033659.
This plug has the machine screw ground pin and wire positioning
pins for safety which REMOVES THE NECESSITY FOR CUTTING
THE GREEN GROUND WIRE. With this plug and cord it is now
impossible to internally shortt he hot lead and the ground lead. Cord
guard (Part No. 1117592) is also no longer necessary with the hooded
plug. Future orders for Part No. 1117600 will be filled with the new
type plug.
It will still be necessary to cut the green ground wire on machines
prior to serial numbers 1232911 Standard and 2033659 Executive.
CEM 483 under the Motor and Drive Index Tab in the CEM binder
outlines this procedure.
MAKE YOUR NEXT SUGGESTION A WINNERI
Did you miss the boat on that last suggestion? It may have been a
potential winner, but you shortchanged yourself. and IBM if the invest igator misunderstood you. Make sure your next suggestion gets
the idea across by using this check list:
-1.
DON'T depend on the investigator to guess what you mean 1
E)(plain in DET AI L. Use enough words to be SURE. It's not
a guessing gamel
2.
DO include sketches whenever applicable. So you can't
draw? 'Trace from the parts catalog 1 Illustrations are a big
help.
---ITIID~!;!---
3.
If your idea is a time saver, indicate how much time it wi II
save per week, month, or year. YOU figure out the time
saved - TELL IBM - a positive approach.
4.
Manysuggestion investigatiol')s involve use of the Parts Manual for reference. OF COURSE include part numbers and
for good measure use Parts Manual reference numbers, too.
Then the investigator WILL be looking at the RIGHT partl
5.
Does your suggestion affect machines not currently manufactured? INCLUDE machine serial numbers if this is the case
so the investigator will look at machines of the RIGHT age.
6.
LOOK at your copy of your next suggestion. Can you read
every word? The investigator works from a carbon copy, too,
and if you can't read your copy; what about the investigator?
Remember, you're not at the plant to explain any words make sure your words can explain themselves!
Why not keep this newsletter with your suggestion forms? Use these
tips for an additional check list. Help yourself to more winnersl
CONTENTS
MODIFIED INTERNAL PLUG ELIMINATES WIRE CUTTING
MAKE YOUR NEXT SUGGESTlOt.,J A WINNERl
CARRIAGE RETURN CLUTCH UNLATCHING ADJUSTMENT
CARBON RIBBON GUIDE IMPROVEMENT - MODEL C
MARGIN CONTROL LEVER WIDENED - MODEL C
L1NESPACING - INDEX PAWL STUD IMPROVEMENT
CARRIAGE RETURN CLUTCH PLATE IMPROVEMENT
KEYPLATE BINDS - TAB SET AND CLEAR BUTTONS
ESCAPEMENT TRIP LEVER IMPROVEMENT - C STANDARD
TYPE PILING - CLUTCH PULLEY BINDS
2
PART NUMBER CORRECTION - CEM /I 491
POWER ROLLS - CARE IN HANDLING
EASY ADJUSTMENT - LINE GAGE CARDHOLDER
MODEL B PIN FEED LIFT PLATEN BILL OF MATERIALS CHANGE
LINE SPACING FAILURES - 66T RATCHETS
REINSERTING PAPER CORRECTLY ON WRITING LINE
SERVICE TIP - INSTALLING HARD TO REACH NUTS.
14 - 16T MOTOR PULLEY STILL AVAILABLE
ORDERING INFORMATION - 13' MOTOR EXTENSION CORDS
FABRIC RIBBON - INTERFERENCE WITH R. H. SPOOL GATE
SERVICE TIP - COTTON SWABS FOR CLEANING
ASSIGNMENT OF SERIAL NUMBERS TO ELECTRIC TYPEWRITERS
CARRIAGE RETURN CLUTCH UNLATCHING ADJUSTMENT
Do not attempt to form the ear on the Model C Tab Carriage Return
interlock to adjust the clutch unlatching point. The ear may break
off if formed. Instead, adjust the clutch unlatching I ink for proper
unlatching.
CARBON RIBBON GUIDE IMPROEVMENT - MODEL C
The lower L. H. Carbon Ribbon Guide now has larger slots to eliminate possible ribbon interference. A projection has been added to
aid in more precise assembly.
MARGIN CONTROL LEVER WIDENED - MODEL C
I
I
I
·1
I,
,
I
The Margin Control Lever has been widened on top to prevent the
lever from camming inside the margin stop during a tab to the R. H.
margin.
3
LlNESPACING - INDEX PAWL STUD IMPROVEMENT
The Index Pawl Operating Stud has been modified to prevent the
Index Pawl Knockout Lever from hanging on the Pawl Restoring Spring
or jamming behind the Index Pawl.
CARRIAGE RETURN CLUTCH PLATE IMPROVEMENT
The Clutch Plate insert is now counterbored deeper to prevent the
end of the power roll shaft from contacting the insert. An accumulation of tolerances could formerly cause the P. R. shaft to contact
the insert, thereby reducing clutch pressure.
KEYPLATE BINDS - TAS SET & CLEAR BUTTONS
New style keyplates have less shelf area beneath the Tab Set and
Clear Buttons to eliminate the possibility of binds on these Buttons.
Should this condition occur on earlier keyplates, form the shelf away
. from the keybuttons or adjust the tab set and clear links. Do not attempt to form the tab set and c Iear buttons bracket.
ESCAPEMENT TRIP LEVER IMPROVEMENT - C STANDARD
The cammlng surface of the Escapement Trip Lever has been lengthened to prevent the Escapement Lever from going under the trip lever
and hanging up. New style escapement trip levers may be installed
on ET's prior to SN 1246128 if hanging up cannot be cured by minimizing escapement lever overthrow.
TYPE PILING - CLUTCH PULLEY BINDS
Occasional type piling may sometimes be traced to the Switch Operating Link binding on the Clutch Pulley Assembly. To correct this
condition, invert the Switch Assembl y on its mounting and reconnect
the Switch Link. Switch Assembl ies are inverted in present manufacture.
PART NUMBER CORRECTION - CEM II 491
CEM #491, "Removable Keyplates, Model C" contains two incorrect
part numbers. Correct as follows:
a.
Change "10170, Screw (1 required)" to "38235, Screw
(1 requ ired) "
b.
Change "1090394, Washer (4 required)" to "257986,
Washer (4 required)"
Make the appropriate changes to the 1960 Parts Manual.
4
POWER ROLLS - CARE IN HANDLING
Occasionally power roll shafts seem to be too large to fit into the
power roll bearings. This is the result of tiny nicks or burrs on the
shafts caused by rough handling. Light filing of the ends of stubborn
shafts will remove this type of flaw and should be tried even if the
shaft appears to be undamaged. Use care in handl ing and storing
power rolls to avoid damage.
EASY ADJUSTMENT - LINE GAGE CARD HOLDER
The Model C rear cover screw (PN 1117337) may be used as a lever
to adjust the line gage card holder. By inserting the head of this
screw in the dust cover slot as illustrated, the card holder can easi.ly
be brought away from the platen.
REAR COVER
SCREW I N SLOT
RAIL
MODEL B PIN FEED LIFT PLATEN BILL OF MATERIALS CHANGE
All Bills of Material for the Model B Pin Feed Lift Platen no longer
include margin racks or tab racks. Margin and tab racks should now
be ordered separately when ordering these Bills of Material. This
change was made because Model C Pin Feed Lift Platen Bills of Material have the same part numbers as Model B Bills of Material and
the Model C does not require the margin or tab rack for conversion.
All part numbers remain the same.
LINE SPACING FAILURES - 66T RATCHETS
Some line spacing failures on 66T ratchets can be traced to a blunt
index pawl. Stoning the point to a sharper edge wi II aid in correcting this trouble.
Also, for correcting linespace trouble on any ratchet, using the
heavy 66T detent spring may help.
REINSERTING PAPER CORRECTLY ON WRITING LINE
To prevent the paper from rising above the writing Iine when the
feed rolls are engaged after reinserting paper, two springs may be
installed from the front feed roll shaft to the rear feed roll shaft.
These springs should be positioned between the last two feed rolls on
each end. Convenient springs to use are the Model A,B, & C calll
5
lever spring Part #1071318 or the Model 01 typebar spring Part
#1090341. The springs will cause the deflector to tip back slightly
preventing the paper from buc:kling inthe area of the front feed rolls.
Caution: The spring tension must be reduced to prevent the front
lips of the deflector from touching the paper. If this is not done,
marking of the copies may result.
SERVICE TIP - INSTALLING HARD TO REACH NUTS
When installing a nut in a bard to reach place, the nut may be held
in an open end wrench by applying a piece of scotch tape across the
jaws.
14 - 16T MOTOR PULLEY STILL AVAILABLE
The 14 - 16T motor pulley (PN 1100536) is obsolete but is still available in a limited number. It can be ordered on a regular P & S Requisition.
ORDERING INFORMATION - 13' MOTOR EXTENSION CORDS
Thirteen-foot 2-wire motor extension cords (PN 1261975) must be
ordered through Lexington Sales Engineering Department on a "Request for Price Quotation" (RPQ) basis. These cords should not be
ordered on a regular P & S Requisition basis.
FABRIC RIBBON - INTERFERENCE WITH R. H. SPOOL GATE
If a customer is using a ribbon without the IBM "Clean CI ip" it is
suggested that the ribbon be installed as illustrated. This will prevent the loose end of the ribbon from covering the spool gate and
causing ribbon reverse failure.
SUGGESTED WAY
OLD WAY
6
SERVICE TIP - COTTON SWABS FOR CLEANING
Cotton swabs of the "Q-Tip" variety may be dampened with IBM
cleaning fluid and used for cleaning the inside surfaces of motor and
power roll bearings, drive gears, bushings, etc. The swabs eliminate using bulky rags in small places and give good control over the
cleaning process. They may be purchased locally on an individual
basis.
ASSIGNMENT OF SERIAL NUMBERS TO ELECTRIC TYPEWRITERS
Serial number tags are installed on Electric Typewriters at the beginning of the Assembly Line. This makes it possible to bring together the necessary paper work, type and segment, base and any
special features at the start of the assembly process. As the machine
passes on down the assembly line each operator's name is placed on
a card bearing the serial number, thus making it possible to pinpoint any qual ity problems to a specific individual. This person is
then given the necessary instruction to improve that particular phase
of assembly or adjustment.
Since different machines require a different amount of time to pass
down the assembly line it is not possible to pin point an Engineering
Change to an exact serial number. For this reason only approximate
serial numbers are released in CEM's, Bulletins, and News Letters.
7
March 17, 1960
SAFETY - SECURE LOOSE END OF GROUND WIRE
On machines with cut and capped ground wires, (CEM 483L the cut
wire should be tucked under the motor leads so that' it cannot become
tangled in the decelerator arm. If the decelerator arm contacts the
ground wire, the wire end cap could be knocked off.
EASY ADJUSTMENT - MODEL "C" U-BAR
The following method may be used to adjust the Model "C" U-Bar for
equal tripping point:
1.
Remove rear top cover.
2.
Position typebars in typeguide as per Reference Manual.
3.
Using the small socket wrench, approach the U-Bar adjusting screw from the rear of the machine. Place the wrench
between the upper ri ght corner of the motor and the bottom
of the backspace mechanism to reach the U-Bar adjusting
screw.
4.
Make adj ustment and replace cover.
CEM INDEX CORRECTION AND FILING INFORMATION
CEM #465 was omitted from the "discard" listof the CEM Index dated
February 12,1960. The information inCEM #465 is in the 1960 Parts
Manual, so this CEM should be removed from the "Escapement" section of the CEM binder and destroyed.
Occasionally two or more CEM's are at the printer's at the same time
on the same area of the machine (for example "ribbon"). When this
---IBM---
occurs, it is difficult to assign filing information as one CEM should
follow the other under the same index tab. Every effort is being
made to furnish correct filing information for CEM' s .
CORRECT ADJUSTMENT - FINAL L. H. MARGIN STOP ECCENTRIC
Occasionally a final l. H. margin stop eccentric screw, Part No.
1072684, may shear off in the margin rack. This may be a result of
the final stop taking the force of carriage return when the margin is
set at zero and the margin slider pin assembly has failed to bottom
in a rack tooth.
To insure this condition does not exist, check machines for the following adjustment:
"Adjust the final l.H. margin stop eccentric so that the margin
slider and pin assembly bottoms freely in the margin rack teeth
with the margin set at zero. The margin stop should not be in
contact with the final stop eccentric when the margin issetat
zero. II
Incorporate the above adjustment as adjustment #4, Page 16, of the
Model C-1 Section, ET Reference Manual.
EASY REPLACEMENT - MODEL B TAB LEVER
A quick way to remove and replace tab levers in Model BET's without removing the margin rack or tab rack is as follows:
1.
Remove platen and rear cover.
2.
Remove R. H. Carriage end cover.
3.
Remove margin set fi nger bracket.
4.
Move the carriage to the extreme left beyond the final
stop, as in replacing an Executive escapement pawl spring.
Without disconnecting either tape, the carriage may be
pulled far enough to the left to expose the tab lever horseshoe.
5.
Hold the carriage against mainspring tension with your left
hand. (Note: one set of front and rear carriage trucks on
2
each end of the carriage may be exposed enough to be
loose or fallout when the carriage is far enough to the left
to expose the horseshoe bracket. Before they are completely exposed, a small dab of IBM #17 grease on each
truck wi II hold the trucks in place.)
6.
Remove the tab lever assembly mounting screws and tab
lever assembly with your right hand.
7.
Reverse the above procedure for reassembly.
1960 PARTS MANUAL CORRECTIONS
1.
Change Page 61, A & B Section, Reference No 162, from
"1073431, link, ribbon feed" to "1100524, link, ribbon
feed, with welded clevis". Cross out Reference No. 150,'
"pin clevis".
2.
Change Page 29, C Section, Reference No. 59, from
"56722, lockwasher, backspace rack mounting screw" to
"55901 (same description)". Washer 55901 provides for
easier and more positive adjustmentof the 1/45 pitch backspace rack. The former washer became cupped in the rack
hole. This change has been made in current production.
3.
Add Part No. 1270497 to Pages 33 and 67, A & B Section.
This is a B/M for converting Model A leaf-spring mounted
type rest assemblies to the current style assemblies.
4.
Add Part No. 1071937 to Pages 21 and 55, A & B Section.
This is the upper motor mounting grommet for shaft mounted
motors.
5.
Add Part No. 1270470 to Pages 11 and 44, A & B Section.
This is a B/M for replacing Model A double link toggle type
C. R. cl utch latches.
6.
Change Page 44, A & B Section, Reference No. 13, from
"1071361 Spring, Carriage Return" to "1070079 (same description)".
CARBON RIBBON SUPPLY SPOOL IMPROVEMENT
A slot has been added in the end of the carbon ribbon supply spool
mounting bracket (Part No. 1117781), to facilitate removal and replacement of the supply spool assembly when working on the clutch.
3
QUICK-FIX FOR PLASTIC PARTS BOXES (LOOSE LIDS)
To make plastic parts box lids snap on securely, touch the lids with
a soldering iron as illustrated. A tiny notch melted on opposite inside surfaces of the lid makes a snug, snap-on fit. Wear safety
glasses when using soldering iron.
Touch these points on inside surface
with soldering iron.
In future News Letters the contents wi" appear on the last page.
This change was made to provide space on the cover for "Front Page"
news. With the contents consistently placed on the last page, information wi" continue to be easy to locate.
CONTENTS
SAFETY - SECURE LOOSE END OF GROUND WIRE
EASY ADJUSTMENT - MODEL
"e"
U-BAR
CEM INDEX CORRECTION AND FILING INFORMATION
CORRECT ADJUSTMENT - FINAL L.H. MARGIN STOP ECCENTRIC
EASY REPLACEMENT - MODEL B TAB LEVER
1960 PARTS MANUAL CORRECTIONS
CARBON RIBBON SUPPLY SPOOL IMPROVEMENT
4
April 5, 1960
CHECK SHIFT TOGGLE PLATE FOR ALIGNMENT TROUBLE
When alignment trouble exists in a machine and the basket seems to
be shifting to the left or ri ght, the trouble may occasionally be caused
by a loose shift toggle plate link pin. The symptoms of a loose pin
are lower case characters crowding next to the upper case characters.
The shift toggle plate should be replaced if the link pin is loose.
"NEUTRAL" CARRIAGE RAIL GUARDSAR'E COLORED LIGHT GREEN
The carriage rail guards described in CEM #487 as "Part No.
1115112, guard, rail, neutral" are light green in color. Some of
these guards have been returned to the Plant due to the belief that
the "neutral" guards were colorless.
The light green "neutral" guard is made of a special plastic that
can be repainted in the Branch Offices to match any machine.
Paint wi II not adhere properly to guards of any other color.
1960 PARTS MANUAL CORRECTIONS
1.
Change Page 16, Reference No. 78, and Page 44, Reference
No. 54, Model C Section, from "1118362 - Retainer, griptype II to 111063797 - collar". Add 111078469, set screw, collar"
to these pages. The gri p cI i P shown is not and wi II not be used
on the ribbon feed and reverse shaft. The collar and set screw
now used wi II conti nue to be used.
2.
Change Page 46, Reference No. 132, Model C Section, from
"1117831 - Stud, ribbon lift bail" to "1117281 (same description)" .
3.
Delete Page 8, Reference No.4 and Page 35, Reference No.
4, tv\odel C Section. The centrifugal governor pin is not available as a field replacement part. Reference No.2 and 3,
same pages, should be ordered if replacement of the centrifugal governor pin is necessary.
---IBM---
4.
Change Page 3, Reference No. 75, Model C Section, from
"1115798, support, carriage rails, {specify color}", to "1077110
{same description}".
5.
Change Page 81, Reference No. 84, A & B Section, from
"1100036 - bushing, LH" to "1093560 {same description}".
6.
Change Page 3, Reference No. 178 and Page 31, Reference No.
178, Mode I C Section, from "1117940, screw, hex" to "63324
{same description}". The new screw is used on all ET's above
Serial No. 1262691 Standard and 2040072 Executive. It has
a larger head to prevent the index pawl lower stop from loosening in the Field.
QUICK FIX - OUTER REWIND FLANGE
To temporarily repair a broken plastic grip-lug on the Model C carbon paper outer rewind flange, Part No. 1117820, a paper table
gage spring, Part No. 1072853 may be used. Insert the gage spring
inside the hub of the spool, where it will act as a temporary lug.
Since the broken flange is seen and used by the operator, it should
be replaced with a new flange as soon as possible. Current flanges
have been reworked to prevent future breakage.
ALIGNING WRENCH MODIFICATION FOR WIDE TYPE FACES
On 4 and 5-unit characters, the type face is often wider than the
type slug, preventing the aligning wrench from grasping the type
slug from the rear. The aligning wrench may be filed off 1/4" as
illustrated to enable the jaws of the tool to grasp these typebars from
the rear.
File Off Here
1/4
t
Filed Wrench on
Wide Type Slug
2
MODEL C DUAL RIBBON FEED IMPROVEMENTS
A lockwasher, Part No. 56313, has been added between the ribbon
rewind button stop and the ear of the keylever bearing support to
which the stop mounts. This will prevent loosening of these parts.
MODELS A, B, & C - CARRIAGE LOCKING ON SIMULTANEOUS
BACKSPACE AND CARRIAGE RETURN
If the carriage locks up on simultaneous backspace and carriage return, the following adjustments will usually overcome the trouble:
1.
Form the backspace pawl guide lug to guide the pawl into the
escapement rack with .020" ± .005" between the working side
of the pawl tooth and the escapement rack tooth. This increased
clearance is being used in current production.
2.
Adjust the backspace operating link for 1/4" to 3/8" remaining
cam travel after the escapement pawl has dropped into the next
rack tooth. This increased choke-off provides more power to
overcome lock-ups. Note: Do not make this adjustment on
Model C H's with the old style backspace bell crank stud or
straight link. Change the stud and link first, then adjust for
increased choke-off. (See CEM #513 for changing backspace
link and stud to the new style parts.)
CORRECTION - ORDERING INFORMATION FOR 13' MOTOR EXTENSION CORDS
The ordering information for 13' 2-wire motor extension cords, Part
No. 1261975, was incorrect as stated in News Letter 74. These
cords should not be ordered on an RPQ basis as stated in News Letter
74, but shouldbe ordered on a regular Parts & Supplies Requisition
from the Lexington Plant.
HIGH USEAGE TYPEBARS
According to current figures, the following typebars have the highest
National useage. This list should be helpful in planning what typebars to carry.
Pica - Models A, B, & C
Character
A
S
E
Part No
1076600
1076605
1076609
Character
C
R
o
3
Part No
1076613
1076614
1076640
Elite - Models A, B, & C
Character
A
E
Part No.
1076544
1076553
Character
R
o
Part No.
1076588
1076584
Executive Modern - Models A, B, & C
Character
Part No.
Character
Part No.
R
E
W
S
1076513
1076509
1076505
1076506
A
L
1076502
1076534
1076533
1076528
0
M
CONTENTS
CHECK SHIFT TOGGLE PLATE FOR ALIGNMENT TROUBLE
"NEUTRAL"CARRIAGE RAIL GUARDSARE COLORED LIGHT GREEN
1960 PARTS MANUAL CORRECTIONS
QUICK FIX - OUTER REWIND FLANGE
ALIGNING WRENCH MODIFICATION FOR WIDE TYPE FACES
MODEL C DUAL RIBBON FEED IMPROVEMENTS
MODELS A, B, & C - CARRIAGE LOCKING ON SIMULTANEOUS
BACKSPACE AND CARRIAGE RETURN
CORRECTION - ORDERING INFORMATION FOR 13' MOTOR EXTENSION CORDS
HIGH USEAGE TYPE BARS
4
April 29, 1960
CHECK GOVERNOR COLLAR FOR DECELERATOR FAILURE
What may appear to be intermittent decelerator fai lure (carriage
returning hard - no governor action, may actually be a loose governor pinion gear. Both the inner and outer set screws in the governor collar must be tight to secure this gear to the governor shaft.
If, in rare cases, slippage occurs with the new style pinned gear,
replace the pin with the former style collar, Part No. 1117506, and
set screws, Part No. 257969.
EASY METHOD - LIFT BAIL REPLACEMENT
When replacing a ribbon lift bail, Part No. 1100526, on a Model
Aor B Executive with carbon ribbon only, break off a portion of the
R. H. ribbon feed arm, as illustrated.
Break off here
The old one can be broken off in the machine and the new one
broken off before installing. The bail may then be removed by
loosening the R. H. bail bearing and disconnecting the links and
spring.
TOP COVER SPRINGS - GOLD APPEARANCE
Some top cover springs, Part No. 1118769, have a gold appearance
on their finish. These springs are not defective. The color is caused by the chromite conversion cycle of the cadmium plating operation.
---TIIillJfv~---
PIN FEED PLATEN - PINWHEEL BINDS
Sometimes binds occur in the pins of the pinwheel assemblies, Part
Numbers 304871, 304872, 1107537, and 1107358. These binds
may often be overcome by loosening the inner plate, as illustrated.
back off
1/4 turn
This plate is threaded and may be backed off 1/4 turn with gas
pliers to open up inside clearances in the assemblies. Caution: Do
not remove this plate from the assembly as it is difficult to replace.
EASY METHOD - ALIGNING MODEL C TYPE
If you have several typebars to align on a Model C, the aligning
wrench striking the top cover is annoying and time consuming. The
top cover arms are screwed to the inside of the top cover with two
screws in each arm. The upper screw on each arm may be removed,
making it possible to pivot the top cover on the bottom screws. It
will tilt back out of the way, leaving the basket area clear to work
on.
CHECK TYPE REST PAD FOR IMPRESSION TROUBLE
Impression and touch problems may be caused by the type rest pad
not floating and restoring freely on its spring support. Impression
varies because the cam clearance varies with the rest position of
the typebar. Check for rubber dust in the area under the type rest
resulting from burrs on the inside of the type rest frame assembly.
It may be necessary to disassemble the type rest frame and polish
the metal surfaces. Surfaces are polished in current manufacture.
Make sure the type rest is free-floating on its spring support after
reassembly.
2
TRIP LEVER SPRING COMING OFF - TYPAMATIC OPERATION
Try installing a Model 01 type bar spring, Part No. 1090341, cut
to 1 1/2" to 1 5/8" Iong, as ill ustrated .
Remove the regular trip lever spring, Part No. 1105906, before installing the longer spring. Caution: A change in touch will result
if the new spring is too short.
QUICK LINE LOCK ADJUSTMENT - MODEL C
On Model C ET's equipped with removable keyplates, it is easier
to make line lock adjustments from the front of the machine. Remove the keyplate and form the lug on the linelock bar with a Tbender. This saves rear cover removal and clevis adjustments.
PLANT ALIGNING SAMPLE - IMPRESSION CHECKED AT TEN
The last line typed on the plant aligning sample is typed with the
impression indicator set at ten. This is done to make sure no cams
will hang up on the power roll at high impression settings.
1960 PARTS MANUAL CORRECTIONS
1.
2.
Change Page 43, Reference No. 34, A & B Section, from
"tape, carriage tension" to "tape, carriage return" for all
tape lengths listed.
Change Page 17, Reference No. 149, Model C Section, from
"1078469 - screw, bristo" to "1077919 (same description)".
Make the same change to Page 44, Reference No. 122, C
Section. This substitution was made to help prevent loosening
of the primary cam.
3
3.
4.
5.
Change Page 28, Reference No. 20, A & B Section, from
"1105512 - plunger, repeat" to "1106595 (same description)lI.
Change Page 3, Reference No. 115, C Section, from "1115345
support, margin rack" to "1115322 (same description)lI. Make
the same change to Page 31, Reference No. 68, C Section.
Change Page 3, Reference No. 176, C Section, from "1115346
support, universal bar assembly" to "1115323 - (same description)lI. Make the same change to Page 31, Reference No.
69, C Section.
INDEX
CHECK GOVERNOR COLLAR FOR DECELERATOR FAILURE
EASY METHOD - LIFT BAIL REPLACEMENT
TOP COVER SPRINGS - GOLD APPEARANCE
PIN FEED PLATEN - PINWHEEL BINDS
EASY METHOD - ALIGNING MODEL C TYPE
CHECK TYPE REST PAD FOR IMPRESSION TROUBLE
TRIP LEVER SPRING COMING OFF - TYPAMATIC OPERATION
QUICK LINE LOCK ADJUSTMENT - MODEL C
PLANT ALIGNING SAMPLE - IMPRESSION CHECKED AT TEN
1960 PARTS MANUAL CORRECTIONS
4
May 20, 1960
TABLE OF CONTENTS
EXECUTIVE U-BAR ADJUSTING PLATE USED ON STANDARD ET'S
NYLON BEARINGS ADDED TO SHIFT TOGGLE BILL OF MATERIALS
LOCKWASHER REMOVED FROM SHOCK MOUNTED RACKS
. INSPECTION STICKER MAY BE USED FOR POWER CLEANER
USE OF TWO-COLOR RIBBONS WITH CORINTHIAN SCRIPT
PRICE CORRECTION - CEM 518
FEED ROLL RELEASE LEVER RETAINING SPRING CHANGED PIN FEED PLATEN ET'S
CHECK CARRIAGE U-BAR SPRING FOR DEC TAB FAILURES
SOUND DEADENER REMOVED FROM SPACEBARS
CLUTCH LEVER ASSEMBLY MAY CAUSE LOCK-UPS
1960 PARTS MANUAL CORRECTIONS
EXECUTIVE U-BAR ADJUSTING PLATE USED ON STANDARD ET'S
The Executive universal bar adjusting plate, Part No. 1108610, is
now being used on all Model C's in production to facilitate adjustment of the escapement trip link clevis. The Executive plate replaced the Standard plate, Part No. 1107812. Make the substitution on Page 9, Reference No.8, Model C Section, 1960 Parts
- - - IBM - - -
Manual. Former style Standard plates will remain available for
Field Service until present parts in stock are depleted.
NYLON BEARINGS ADDED TO SHIFT TOGGLE BILL OF MATERIALS
Two nylon bearings, Part No. 1115144, have been added to the shift
toggle assembly Bill of Materials, B/M #1263580. Add the part
number to CEM #493.
LOCKWASHER REMOVED FROM SHOCK MOUNTED RACKS
Lockwasher, Part No. 56722, has been removed from the Model 11
and 15 rubber shock mounted escapement racks. A shorter screw,
Part No. 55726, is now used. Make the change to CEM #478A and
Page 9, Model C Section, 1960 Parts Manual.
INSPECTION STICKER MAY BE USED FOR POWER CLEANER
A convenient way to keep track of power cleaner check-ups is to use
an inspection sticker, Form #140-6238-3. The sticker may be placed
on the power cleaner or inside the service case and marked at each
power cleaner inspection.
USE OF TWO-COLOR RIBBONS WITH CORINTHIAN SCRIPT
Two color ribbons are not recommended for use with Corinthian
Script type. The tops and bottoms of some characters tend to print
in the wrong color due to the height of the characters.
PRICE CORRECTION - CEM 518
New prices have been established for the following parts released in
CEM 518, Redesigned Rear Frame. Change CEM 518 to include the
new prices.
Part No.
1115169
76574
1090254
1093611
1115100
38362
Description
Frame, rear, stamped steel
Washer, motor mounti ng stud
Spacer, interposer mechanism mounting
Screw, interposer mechanism mounting
Frame, rear, stamped steel (for shaft
mounted motors)
Screw, ring clamp
2
Price
2.15
.05
.05
.15
3.50
.05
1960 PARTS MANUAL CORRECTIONS
Parts Manual corrections have been printed on a separate sheet for
easy insertion in the manual. This will be done from time to time
when extensive corrections are listed in News Letters.
1. Escapement racks listed under Reference No. 16, Page 14, A &
B Section, are for Model A's and early B's only. Model BET's above
approximate Serial No. 399631 use the following escapement racks
and related parts:
Part No.
38279
1090003
1103540
1103544
1103548
1103536
1103555
1103559
1109807
1109808
1109809
1109810
1109811
1109812
Descri pti on
Screw, tensi on tape mounti ng
Screw, escapement rack
Escapement rack, 12", 6 - 2/5P
Escapement rack, 12", 8P
Escapement rack, 12", 9P
Escapement rack, 12", lOP
Escapement rack, 12", 12P
Escapement rack, 12", 14P
Escapement rack, 16", 6 - 2/5P
Escapement rack, 16", 8P
Escapement rack, 16", 9P
Escapement rack, 16", 1OP
Escapement rack, 16", 12P
Escapement rack, 16", 14P
Add the above parts to Page 14, A & B Secti on. Pri ces are in the
Pri.ce List dated April 15, 1960.
2. Change Page 81, Ref. No. 84, A & B Section, from "1100036Bushing, L. H. " to "1093560 - Bushing, L. H. "
3. Change Page 24, Ref. No. 18, A & B Section, from "Reconditioned Stenci I Platen Assembly (for Model A)" to "Reconditioned
Standard Platen Assembly (for Model A)".
4. Add the following to Page 47, Ref. No. 24, A & B Section:
Part No.
1079895
1079896
1079897
1079896
1079898
Description
Model
Model
Model
Model
Model
A
A
A
A
A
escapement
escapement
escapement
escapement
escapement
rack,
rack,
rack,
rack,
rack,
1/32,
1/32,
1/32 ,
1/32,
1/32,
12"
16",
16",
20",
20",
L.H.
R.H.
L. H.
R.H.
4. (continued)
Part No.
1074059
1074060
1074061
1074060
1074062
1093730
1093731
1093732
1093731
1093733
Description
Model
Model
Model
Model
Model
Model
Model
Model
Model
Model
A escapement
A escapement
A escapement
A escapement
A escapement
A escapement
A escapement
A escapement
A escapement
A escapement
rack,
rack,
rack,
rack,
rack,
rack,
rack,
rack,
rack,
rack,
1/36, 12"
1/36, 16",
1/36, 16",
1/36, 20",
1/36, 20",
1/45, 12"
1/45, 16",
1/45, 16",
1/45,20",
1/45, 20",
L. H.
R. H.
L. H.
R. H.
L. H.
R.H.
L.H.
R. H.
The prices for these parts are in the Price List dated April 15, 1960.
FEED ROLL RELEASE LEVER RETAINING SPRING CHANGED - PIN
FEED PLATEN ET'S
The feed roll release lever retaining spring, Part No. 1116291, has
been increased in diameter. The formed contour of the spring finger
has also been changed. Both changes provide more spring strength
for pin feed platen ET's.
CHECK CARRIAGE U-BAR SPRING FOR DEC TAB FAILURES
If a Model C Dec Tab fails to tab properly, the carriage universal
bar restoring spring, Part No. 1071499, may be off. Operators
sometimes knock this spring off while brushing out their machines.
With the spring off, the U-bar drags across the pawl release lever
enough to cause tab fai lure.
SOUND DEADENER REMOVED FROM SPACEBARS
The foam plastic sound deadening material has been removed from all
Model C spacebars. A product test of this material has revealed that
no sound deadening results from its use as a spacebar filler.
CLUTCH LEVER ASSEMBLY MAY CAUSE LOCK-UPS
Carriage return lock-up may be caused by distortion of the clutch
lever assembly, Part No. 1117481. The vinyl plastic sleeve on the
anti -whip guard sometimes presses on the power frame. This pressure
may distort the clutch lever assembly. Cut the sleeve tip if it is too
long. Present production parts are hardened to prevent distortion.
Some machines with the soft lever assemblies have a small outer reinforcing bracket, Part No. 1115942, mounted outside the clutch
lever brackel' with longer clutch lever mounting screws, Part No.
38281.
3
~w>[email protected](:f1l [email protected]~I;t;t:lI;:H§
\\er~'
;,
June 3, 1960
PAC~~GE
P~RTS
HERE IT lSI
Certain small parts are now prepackaged in the
qua n t i ti e s you use and sup p lie din a n ass 0 rt men t
under one part numberl
HERE IS HOW IT WORKS ••.•
You will be supplied with two packets each of the following assortments:
1. Nuts & Clips
2. Screws
3. Springs
4. Springs
5.
6.
7.
8.
Springs
Springs, etc.
Mi sce II aneous
Mi sce II aneous
Pourone parts packet in each plastic vial in your service case. Keep
the other one in your automobile parts chest or wherever you keep
your reserve parts.
When you use the last part of one variety in the vial, discard the
balance of the other parts - and replace, with your reserve packet.
--------IB)(--------
TO REORDER . . . .
A new reserve packet you merely sign your name on the empty packet - send in with your call reports and the stockroom will send you a
new packet.
YOU NEED NOT ACCOUNT FOR THESE PARTS . . . .
Because they are charged to the over-all local CE Operating Statement in the same manner as grease, cleaning fluid, etc. You do not
need to list the parts in these packets on any call reports. You don't
count these parts in the annual inventory. You can essentially forget about them and yet - - - YOU ALWAYS HAVE THE SMALL PART YOU NEED!
IMPORTANT: The specific parts in the packets are the ~ ones not
to be accounted for. All other parts are to be accounted for as usual.
CEM #529 wi II release all necessary part numbers and ordering information.
June 17, 1960
TABLE OF CONTENTS
CORRECTION TO CEM #525
EASY METHOD CLIP SPRING
INSTALLATION OF FABRIC RIBBON ANCHOR
CHECK ALL CAM CLEARANCES AFTER A POWER ROLL CHANGE
CORRECTIONS TO CEM'S
ORDER BLACK ASPHALT SOUNDPROOFING BY THE FOOT
REMOVING WHITE IBM CLEANING FLUID SPOTS
QUICK CHECK - PLATEN CLUTCH SLIPPAGE
1960 PARTS MANUAL CORRECTIONS
CORRECTION TO CEM #525
B/M 1265134, Margin Control Bellcrank and Stud, was erroneously
stated to contain Part No. 1117434, margin control bell crank mounting stud. This B/M actually contains Part No. 1117425, Margin
control bellcrank stop stud. Make this correction to CEM #525.
EASY METHOD CLIP SPRING
INSTALLATION OF FABRIC RIBBON ANCHOR
Did your last fabric ribbon anchor clip spring fly across the room
while you were trying to install it? Try this next time:
1. Press the spring in its groove in the ribbon spool and pu!
your segment pick over about 1/3 of the spring.
---IBM---
2.
Put the anchor cl ip over its pivot peg and push it down as
far as possible.
3.
Push in the free end of the spring with the butt of the small
spring hook until the spring is compressed beyond the spring
lug on the anchor clip.
4.
Push the anchor cI i P the rest of the way down.
5.
Slip out the segment pick and secure the bottom lug on the
anchor clip.
Even if you sl ip whi Ie compressing the spring, the spring hook tai I
will keep the spring from flying out before the clip is in place.
CHECK ALL CAM CLEARANCES AFTER A POWER ROLL CHANGE
When installing new power rolls,all cam clearances should be checked. Some power rolls now in Model B machines are as much as .007"
under size. Power rolls should be 1.504" + .005" in diameter.
CORRECTION TO CEM'S
1. Change CEM #517, Records Section, from "Page 58" to "Page 48".
2. Change CEM#520, Records Section, from "Page 45"to"Page 44".
ORQER BLACK ASPHALT SOUNDPROOFING BY THE FOOT
The black asphalt soundproofing used in deflectors will be shipped
by the foot under Part #1115998. One foot of wrapping paper contains five strips of soundproofing. Therefore, if five feet of soundproofi ng are needed, order "one foot of Part #1115998". This is a
CE Maintenance Supply item. It is not for sale and not to be included in inventories.
REMOVING WHITE IBM CLEANING FLUID SPOTS
Sometimes spilled IBM cleaning fluid will cause white spots on linoleum or composition desk tops. These spots may be removed by rubbing them with #6 oil and then with a dry cloth.
QUICK CHECK - PLATEN CLUTCH SLIPPAGE
Draw a pencil line across the platen clutch cover and onto the
rachet. Repeat carriage return for severa I revol uti ons of the platen.
Even the sl i ghtest sl ippage wi II show up.
1960 PARTS MANUAL CORRECTIONS
Model A & B Section
1. Add the following B/M numbers for Model A Executive Pawl
Block Assemblies to Page 48, Ref. No. 100:
1074055
1074098
1074289
2.
Pawl block assembly, Model A, 1/32 P
Pawl block assembly, Model A, 1/36 P
Pawl block assembly, Model A, 1/45 P
On Page 73, the reference number and part number for the eccentric nut which adjusts the front bellcrank latch were omitted.
The nut is located on the extreme right edge of the illustration.
Its part number is 1100121.
3. On Page 21, change the part number for R & M red nameplate
shaft mounted motors from 1107011 to 1107009. This is found
in the second block in the left column of the motor chart.
4. Change Page 104, Ref. No. 36, from 1013302 to 1107508.
5. Change Page 62, Ref. No. 62 from 1105691 to 1100065.
Model C Section
1. Change Page 44, Ref. Nos. 131 to 163/ from "Refer to carbon
ribbon mechanism for descriptions and part numbers" to "Refer
to Model C Standard fabric ribbon feed".
2. Change Page 67, Ref. No. 68, from 1117750 to 1076932.
Change Ref. No. 86 from 1076932 to 1117750.
3. Change Page 5, Ref. No. 30, from 641 to 1116031. Make the
same change to Page 32, Ref. No. 42.
4. Change Page 58/ Ref. No. 139/ from 1090024 to 1109024.
5. Change Page 72, Ref. No. 34, from 1013302 to 1107508.
April 15, 1960, Price List
1. Change Page 61, Part #1271102, from "Button Set" to "Type Set
and Segment".
June 29 , 1960
TABLE OF CONTENTS
EASY ADJUSTMENT - BALANCE CONTROL - TE 611-D
TRANSMITTER
MAINSPRING IDENTIFICATION, PENDULUM TYPE MASTER
CLOCKS
QUICK INSTALLATION - UNDERPRINTING SHIELDS
IDENTIFICATION CODES FOR LINE SPACE LEVER & CAM
ASSEMBLIES, MODEl C
TYPING THE TOP LINE OF STIFF CARDS
CHECK SElECTOR BAIL FOR EXECUTIVE SHIFT LOCK FAILURES
EASY METHOD - OBSERVING CLUTCH UNLATCHING LINK
ADJUSTMENT
IDENTIFICATION CODE - 11 PITCH MACHINES
DEC TAB SET FINGER HITTING CARRIAGE END COVER
EASY REMOVAL - SMALL PLASTIC PARTS BOXES FROM LARGE
BOX
EASY METHOD - FEED ROLL RELEASE LEVER INSTALLATION
SERVICE TIP - DROPPING MODEl C TYPE
GRIND PLASTIC FEED ROLL RElEASE BELLCRANK WHEN USED
ON PIN FEED PLATEN ET'S
OBSTRUCTION WRENCH MODIFIED
---EBM---
NEW MODEL A LIFT PLATENS NO LONGER AVAILABLE
INDEX PAWL CARRIER C-CLIPS STANDARDIZED
1960 PARTS MANUAL CORRECTIONS
EASY ADJUSTMENT - BALANCE CONTROL - TE 611-D
TRANSMITTER
The Balance Control must be properly adjusted in order to obtain normal life expectancy and maximum output from the amplifier tubes.
The Balance Control is often maladjusted as a result of mistaking it
for the drive control.
Balance Control adjustment may be re-established by connecting the
IBM Voltmeter, DC volts scale, between the Screen Grids of the
amplifier tubes and adjusting for zero reading.
This adjustment should be rechecked when amplifier tubes are replaced.
Safety precautions as outlined in TE CEM #234 must be observed
while making this adjustment.
MAINSPRING IDENTIFICATION, PENDULUM TYPE MASTER
CLOCKS·
The chart below contains all pertinent information for mainspring
identification:
PIN
Mach. Pend.
TYEe TYEe
72865
15-17
18-19
25
72866
25
.007"
Invar .0075"
or
Mere.
Torque *
Inchiozs.
.250" 11'0" 7.0/7.5
.250" 11'0" 7.5/8.0
.008"
.250"
Invar
or
Mere.
*One turn from fully wound position
97827
37
Ball
or
Invar
Dimentions
Thick Wide Long
10'6"
11.5
Color
Code
Red
Yellow
Blue
-I-
lock nut of the margin control bellcrank adjusting screw. The screw
may now be adjusted without removing the rear top cover. This
applies mainly to the Model C Standard machine. Interference
caused by the aligning and grouping links reduces the wrench's
effectiveness on the Executive.
NEW MODEL A LIFT PLATENS NO LONGER AVAILABLE
Discontinue ordering new Model A lift platens as these parts are no
longer available. Order only the universal platens for replacement
in Model A typewriters.
INDEX PAWL CARRIER C-CLIPS STANDARDIZED
All three C-clips used on index pawl carrier studs are now Part No.
1073418. This clip replaces two Part No. 123206 clips and one Part
No. 147297 clip. The dimensions of the studs on the pawl carrier
have been changed to permit this standardization. Because of this,
"old style" C-c1ips should not be used on "new style" studs as the
former c1ipswill be too loose and could easily fall off. The Part No.
1073418 clip is the one which is used to hold the index carrier stop
arm.
1960 PARTS MANUAL CORRECTIONS
1.
The longnose pliers are listed on Page 19, Tool Section, Ref.
"10.3, as Part No.9900104. The correct part number is460808.
2.
Delete Part No. 1116031 and its description from Page 13, Model
C Section, Ref. No. 52. The hooded plug and cord assembly
is Part No. 1117600, also listed under the same reference number.
3.
Delete all part numbers and descriptions under Ref. No.34, Page
43, A & B Section. The correct information is as follows:
1103674
1103675
1103676
Tape, carriage return, 12"
Tape, carriage return, 16"
Tape, carriage return, 20"
This correction was erroneously reported in NL #77 as a change in
nomenclature only. Be sure to make the part number changes announced here.
QUICK INSTALLATION - UNDERPRINTING SHIELDS
Modify underprinting shields, Part No. 1260385, as illustrated for
easy insertion and adjustment.
Beveled Sides
Enlarged Slots
The beveled sides make insertion easier and the enlarged slot makes
vertical adjustment easier after the shield is in place.
IDENTIFICATION CODES FOR LINE SPACE LEVER & CAM
ASSEMBLIES, MODEL C
A chart has been prepared for eady identification of line space lever
& cam assemblies for Model C's. Compare the number stamped on
the cam with this chart for positive identification.
LINE SPACE LEVER AND CAM ASSEMBLIES
Stamped
Code
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Part No.
1115681
1115682
1115683
1115684
1115685
1115686
1115687
1115688
1115689
1115690
1115691
1115692
1115693
1115694
1115695
Descri pti on
29T(123),60T(246)
32T(123), 33T(123),34 T(123)
35T(123), 36 T(123),44 T(123)
38T(123),39T(123),40T(123)
4lT(234)
44T(234)
45T(124),46T(124)
48T(235),49T(235)
50T(234),51 T(234),52T(234)
53T(234),55T(234)
54T(246),62T(246)
57T (234), 58T (234), 59T (234)
58T (246), 66 T(246)
60T(234),61 T(234), 62T(234)
66T(234)
TYPING THE TOP LINE OF STIFF CARDS
Try inserting a feed finger for pin feed platens on each side of the
front paper scale as illustrated. Some forming of the finger foot to
fit the scale closely may be necessary to clear any obstruction to a
free carriage travel.
USE
11 08179 - FEED FI NGER (FOR B & C)
:.04786 - FEED FI NGER fOR MODEL A)
CHECK SELECTOR BAIL FOR EXECUTIVE SHIFT LOCK FAILURES
Shift lock failure on Model C 4's may sometimes be traced to the
shift lock lug on the keylever hitting the selector bail. This prevents the lock lug from locking under the shift lock bracket, even if
the bracket is correctly positioned. To correct for this cOildition,
form the shift lock lug slightly to the right, away from the selector
bail.
EASY METHOD - OBSERVING CLUTCH UNLATCHING LINK
ADJUSTMENT
To check the Model C clutch for unlatching during the last 1/64" to
1/32" of the carriage travel, do the following:
1. Hold the carriage to the right.
2. Push the rear of the clutch lever to the left, almost to the
latching position.
3. The rear of the clutch latch should clear the upright lug of
the clutch lever by 1/64" to 1/32", as illustrated.
IDENTIFICATION CODE - 11 PITCH MACHINES
The fourth digit of the Machine identification Code designates pitch.
The pitch code for 11 pitch machines is zero (0). Add this code number to Page 15, Machine Identification Code Section, 1960 Parts
Manual.
DEC TAB SET FINGER HITTING CARRIAGE END COYER
When the carriage returns beyond the left margin on Model C Dec Tab
ET's, the rear of the L. H. carriage end cover may strike the tab set
finger, knocking it out of adjustment. To prevent this condition,
position the L. H. carriage end cover far enough to the left to allow
clearance between the cover and set finger when the carriage is all
the way to the right. The L.H. platen knob and detent release lever
may also need to be moved to the left to provide sufficient clearance.
EASY REMOYAL - SMALL PLASTIC PARTS BOXES FROM
LARGE BOX
Don't sweat over gripping those small parts boxes to get them out of
their partition. Cut "Y" notches with diagonal pliers in each partition where parts boxes are stored. Make the notches big enough
for your thumb and finger.
EASY METHOD - FEED ROLL RELEASE LEVER INSTALLATION
When installing the new style feed roll release lever, Bill of Material 1271259, the following steps will save time:
1.
2.
3.
4.
Move the feed roll release lever to rear.
Remove platen.
Remove feed roll release lever and right hand end cover.
Lift the rear of the feed roll release link and break off rear
bellcrank with duckbills and longnose pliers. Snap the
rivet out with the duckbi lis.
5. Install stud #115114 and nut #1090037 through new style
bellcrank #115113, then install new style bellcrank on
former style feed roll release link.
6. Check to see if the bellcrank clears the tab rack final stop.
If it clears, leave the old one in. If it interferes, break
the end of old stop, then pull it out the top. To install
new stop, push tab fulcrum wire to extreme left, which
allows the new stop to s lip down with very little interference with the paper bail shaft.
7. Replace the parts removed in steps 2 & 3 and tighten bellcrank screw part #1115212.
SERVICE TIP - DROPPING MODEL C TYPE
Do unpl easant thoughts cross your mi nd when the typebar links become
disconnected from the type bars during type dropping? Next time,
remove the keyplate from that Model C. With the keyplate left on
the typebars rest against it, but the edge of the keyplate doe~n't
offer enough support for them and they turn sideways. Poof--no link!
Without the keyplate, the bars hang all the way down and "stay put"
very ni cely.
GRIND PLASTIC FEED ROLL RELEASE BELLCRANK WHEN USED
ON PIN FEED PLATEN ET'S
The right rear corner of the plastic feed roll release bellcrank must
be ground off 1/8" to 3/16" when installing the bellcrank on pin
feed platen ET's. An unmodified bellcrank will fail to fully restore
because it hits the right hand upright guide of the form guide.
OBSTRUCTION WRENCH MODIFIED
The obstruction wrench, Part No. 9900022, has been redesigned for
a greater angle between the shank and socket to permit its use on the
July 22, 1960
TABLE OF CONTENTS
CARRIAGE RETURN AND TENSION TAPES COLOR CODED
ACTUATING LEVER SPRING REMOVED
CORRECTION TO CEM #518
CHECK NEW ET'S FOR BASKET BINDING RIBBON DRIVE SHAFT
WASH AIR INTAKE FILTER SCREEN TO PREVENT POWER CLEANER
OVERHEATING
PRICE CHANGE - FIESTA RED TOUCH-UP LACQUER
EASY METHOD - FUTURE MARGIN SET BRACKET REMOVAL
QUICK FIX FOR MARGIN SET LEVER JAMMING UNDER CARRIAGE
BEYOND R. H. MARGIN
CLUTCH LEVER BRACKET ASSEMBLY STRENGTHENED
CARRIAGE TENSION TAPE PULLEY CHANGED TO NYLON
IMPRESSION TIP - EXEC'S USED ON AUTO-TYPISTS
MARGIN SET LEVER BRACKET CHANGED TO POLYPROPYLENE
EASY METHOD - INSTALLING CARRIAGE RETURN TAPE WITHOUT
REMOVING COVERS
ELIMINATING ELECTRONIC SYSTEM INTERFERENCE - TE EQUIPMENT
EASY REMOVAL - MODEL A TOP COVER SCREWS
---XBM---
CHECK LlNELOCK BAR SPRING FOR R.H. MARGIN SET TROUBLE
EASY ADJUSTMENT - A & B RIBBON SPOOL RETAINING SPRINGS
QUICK FIX - REPEAT KEYLEVERS
USE PLASTIC BOTTOM PANEL FOR A CUSHION
1960 PARTS MANUAL CORRECTIONS
PEEN FEED ROLL RELEASE LINK FOR GREATER THROW
BE ALERT FOR SHARP RAIL EDGES
CARRIAGE RETURN AND TENSION TAPES COLOR CODED
Model C carriage return and carriage tension tapes are now color
coded for easy identification. Colored thread is used to sew them
together at the ends. The colors are as follows:
13" - black
17"-red
20" - white
24" - blue
30" - green
ACTUATING LEVER SPRING REMOVED
The fabric ribbon actuating lever spring, Part No. 1090589, Reference 213-72, has been eliminated on the fabric ribbon mechanism
because it did not improve operation.
CORRECTION TO CEM #518
CEM#518, Redesigned Rear Frame, contains a typographical error.
Reference No. 14 should be Part No. 38262 instead of 38362. Correct this error in the CEM and the 1960 Parts Manual.
CHECK NEW ET'S FOR BASKET BINDING RIBBON DRIVE SHAFT
Some new Model C's have been delivered with the basket binding on
the ribbon drive shaft when shifted into upper case. The line has
been alerted to this problem. If a bind is occurring, form the bottom
of the type rest toward the front of the machine unti I it clears the
drive shaft in upper case.
2
WASH AIR INTAKE FILTER SCREEN TO PREVENT POWER CLEANER
OVERHEATING
Power cleaner overheating may be reduced considerably by washing
the power cleaner air intake filter screen in IBM cleaning fluid.
Brushing removes accumulated dirt but does not leave the screen oil
free. Degreasing the screen by washing will increase the cooling
circulation by as much as 50% and reduce motor cut-off caused by
overheati ng.
PRICE CHANGE - FIESTA RED TOUCH-UP LACQUER
Fiesta Red touch-up lacquer in 1/4 pint cans, Part No. 1280016,
has been reduced in pri ce from $2.85 to $.95 per can. tv\ake thi s
correction to the April 15, 1960 Price List.
EASY METHOD - FUTURE MARGIN SET BRACKET REMOVAL
When installing the replacement backspace bellcrank stud assembly,
B/M 1271216, also remove the margin set bracket and file a portion
from the right screw slot as illustrated. This will make it unnecessary
to remove the backspace stud screw when the margin set bracket is
removed in the future. By loosening the screw, the margin set
bracket can be pivoted past the screw and removed.
QUICK FIX FOR MARGIN SET LEVER JAMMING UNDER CARRIAGE
BEYOND R.H. MARGIN
Margin set levers may be easily stopped from jamming under the
carriage end plate as follows:
Remove the L. H. tab check lever keeper screw (Part No. 1115735,
Page 23, Reference 25). Place any suitable washer under this screw
and replace it. The head of the screw being raised by the washer
will prevent the margin set lever, which is directly above the screw
head, from going low enough to permit the carriage to ride up and
over the margin set lever. Engineering has added material to the
margin set lever to eliminate this problem.
3
CLUTCH LEVER BRACKET ASSEMBLY STRENGTHENED
The cI utch Iever bracket assembly, Part No. 1117841, has been
strengthened by the addition of material and by heat treating to a
harder degree. This wi II reduce carriage return fail ures due to bending of this bracket. The anti -whip guard has been lengthened,
eliminating the need for the plastic sleeve. The plastic sleeve will
remain available for field use.
CARRIAGE TENSION TAPE PULLEY CHANGED TO NYLON
The carriage tension tape pulley, Part No. 1115936, is now made of
nylon. It is mounted to the power frame using screw 1115939, nut
1090037, and spacer 1092168. Add the part number of the spacer to
mechanism 205 and 305 sections of the 1960 Parts Manual.
IMPRESSION TIPS - EXEC'S USED ON AUTO-TYPISTS
If the typebars fail to print evenly on Executives used on autotypists, the cause of this problem may be a bind which is caused by
the interference of the interposer connecting links and the auto-type
connecting links to the keylevers. Interference may be set up by too
much side movement where the interposer links connect to the selector
bails. This causes the interposer links to come in contact with the
auto-type links on either side of the interposer link and restrict the
motion of the selector bails, selector bars, etc. This results in a
light impression or no impression at all. This problem can be corrected by installing a feed roll retainer clip, Part No. 1110093, on
both sides of the interposer link to restrict side movement.
MARGIN SET LEVER BRACKET CHANGED TO POLYPROPYLENE
The margin set lever bracket, Part No. 1115572, has recently been
changed to polypropylene. The part number remains the same. To
prevent spreading of the polypropylene, washers are now used between the head of mounting screws and the bracket. Add washer Part
No. 1091338 to the 1960 Parts Manual.
4
EASY METHOD - INSTALLING CARRIAGE RETURN TAPE WITHOUT
REMOVI N G COVERS
An easy and positive method to install a new carriage return tape is
as follows:
Facing the front of the machine, wind the clutch pulley spring fully
and let it slowly unwind until one of the eyes in the pulley is visible
from the front of the machine. With the power off, latch the clutch
manually. Take new return tape and place the retaining hook of the
tape on the pulley in its proper relation. Unlatch clutch and let
pulley unwind two revolutions while holding the return tape. This
threads the tape around the pulley and through the cI utch mechanism
properly. Again latch the clutch manually. Take a spring hook and
catch the tape on the back side of the clutch pulley and pull the
loose end through clutch mechanism at the top of the clutch pulley
and thread it through the right hand carriage return pulley assembly.
Unlatch the clutch to finish the hook-up, move the carriage all the
way to the right and secure the end of the tape in oneof the holes in
the bottom of the carriage. Then move the carriage to the left, drawing the carriage return tape through the machine. It may then be
removed from the bottom of the carriage and installation completed.
ELIMINATING ELECTRONIC SYSTEM INTERFERENCE - TE EQUIPMENT
Many cases of electronic system interference caused by telephone
battery charger rectifiers may be eliminated by the addition of a
small capacitor across the charger output circuit. The 105-D charger
may be effectively silenced by the addition of a one microfarad
capacitor across the load. Telephone company personnel are usually
cooperative in providing this assistance.
EASY REMOVAL - MODEL A TOP COVER SCREWS
By using
Model A
replaced
in future
the diagonal pliers and cutting off the outside edge of the
front feet, the two front cover screws may be removed and
without having to remove the front feet. This will save time
Model A front cover removal.
CHECK LlNELOCK BAR SPRING FOR R.H. I'v\ARGIN SET TROUBLE
The Iinelock bar spring, Part No. 1072703 (the small spring under the
switch lever), may cause the margin stop to move to the iighl· enough
to miss the correct groove in the margin rack as the margin set lever
5
is released. This would cause the margin to set one space to the
ri ght of the desi red number.
This spring's tension may be reduced to a point where it will not
cause the above trouble. The tension should not be reduced to a
point where the linelock bar will not restore.
EASY ADJUSTMENT - A AND B RIBBON SPOOL RETAINING
SPRINGS
To quickly move the ribbon spool retaining springs, Part No. 1000159,
up or down to adjust spool tracking, carefully form the ribbon feed
plate to which the springs mount. This saves cover removal and disassembly. Be careful no binds are created in the ribbon reverse lever
stud after any formi ng adj ustments.
QUICK FIX - REPEAT KEYLEVERS
When two-piece repeat, non-repeat keylevers go into the repeat
position too easi Iy, remove the keylever compression spring and replace it with a clutch-operating arm spring, Part No. 1072207. This
heavier spring supplies a definite "repeat-position" which is more
nearly equal to that on the plunger-type repeat keylevers and the
Model C repeat keylevers.
USE PLASTIC BOTTOM PANEL FOR A CUSHION
To save the paint on Model C ET's and the finish on desks, place the
foam coated bottom panel on the desk or working surface. The ET
may then be placed on the panel while the machine is tipped up.
1960 PARTS MANUAL CORRECTIONS
Page 15, Model t Section, Reference No. 13, calls out part No.
1116242 as a tan platen knob. This is a ~ knob. "Tan" knobs are
Part No. 1116270, described in the Manual as "brown". Also make
this change to Page 43, C Section.
PEEN FEED ROLL RELEASE LINK FOR GREATER THROW
Sometimes the feed roll release mechanism will not lock securely in
the "release" position. The problem is that the front portion of the
feed roll release link does not travel sufficiently far to "lock." This
link may be carefully peened, avioding replacement. Removal of the
link from the machine is unnecessary. By removing the feed roll re6
lease lever, the back portion of the link may be rotated upward,
allowing easy access for peening the front top of the link.
BE ALERT FOR SHARP RAI LEDGES
Installing protective end covers on rails may not eliminate the possibility of operators catching fingers or nails on upper sharp corners of
some rails. This can be corrected by rounding the corners of any
sharp rails with a file. Most rails have the corners "broken" enough
at the Plant, but eE's should be alert to any machines in the Field
on which this has not been done. This is being done at the Plant in
current production.
7
August 30, 1960
TABLE OF CONTENTS
CHECK LIST FOR RED & BLACK RIBBON TRACKING
LOUDER BELL FOR MODEL C ET's
BIM AVAILABLE FOR MOTOR CONVERSIONS
SAFETY - ADJUSTING INTERMEDIATE PULLEY SHAFTS
QUICK FIX - MODEL A & B IMPRESSION CONTROL LEVER
REPEAT KEYLEVERS - MODEL C DEC TAB
CARBON RIBBON SUPPLY SPOOL MECHANISMS MODIFIED
CHECK FOR REWIND LEVER BINDS WHEN INSTALLING THE NEW
STYLE RIBBON FEED & REVERSE SHAFT BEARING
CHECK POINTS FOR CARBON RIBBON BREAKAGE
E13B FONT - CHANGE IN PART NUMBERS
STROKE COUNTER LINK & BRACKET MODIFIED
DEC TAB LEVER ASSEMBLY NOW AVAILABLE
SHIFT TOGGLE SPRINGS MODIFIED
PLATEN LATCH ECCENTRIC LOCKING SCREWS CHANGED TO
HEX HEAD
EXECUTIVE SHIFT SHIPPING GROMMET MAY NOW BE USED FOR
CENTERING
---XIM---
PARTS PACKETS SCHEDULED FOR PERIODIC REVIEW
INDEX PAWL LOWER STOP SCREW CHANGED
FORM DEFLECTOR FOR FORMS TEARING ON ROLLBACK
1960 PARTS MANUAL CORRECTIONS
*******
CHECK LIST FOR RED & BLACK RIBBON TRACKING
Many stubborn red and black tracking problems may be overcome by
referring to the following list of suggested corrections:
1. Raise the corner guides as high as they will go.
2. Make sure there are no binds in the ribbon lift guide.
3. Move pointer as far back as it will go without hitting the front
scale.
4. Take all excess play out of lift mechanism.
5. Make sure ribbon vane is straight.
6. Place a 1/16" shim under the rubber stop on the ribbon lift mechanism.
7. If necessary, cut about 1/8" off the tip of the position 39 cam to
bri ng the underscore into line.
8. Adjust ribbon drag so that it is equal in both directions.
9. If there is a reposition indicator, install a plastic shield to stop
ribbon from hanging up on wire.
10. Replace ribbon lift bail spring, Part No. 1074321, with a heavier
compressi on spri ng.
11. Test ribbon in both directions.
LOUDER .BELL FOR MODEL C ET'S
The bell on Model C ET's may be inaudible above office noise. The
Model B bell, Part No. 1105753, is louder and may be readily substituted in the Field to provide a louder bell.
B/M AVAILABLE FOR MOTOR CONVERSIONS
All parts necessary to convert Model C ET's from a DC motor to a
115V 60 CPS AC motor are contained in B/M 1270872. The motor
itself must be ordered separately. This B/M is available on a regular
Lexington P & S Requisition. Add the B/M number to Pages 13 & 41,
Model C Section, 1960 Parts Manual.
2
SAFETY - ADJUSTING INTERMEDIATE PULLEY SHAFTS
The intermediate pulley shaft, Part No. 1106171, is hardened and
may occasionally chip when loosened or tightened. Flying chips
could result in serious eye damage to the Customer Engineer or to
customers should they be standing nearby.
CE's should take some precaution when making this adjustment, such
as placing a shop towel over the shaft.
QUICK FIX - MODEL A & B IMPRESSION CONTROL LEVER
When a Model A or B impression control lever breaks, often it is the
"stop" that breaks off, making it necessary to replace the control
lever. A temporary stop can be made by removing the rear screw,
Part No. 38281, from the impression control gear sector cams and
shaft assembly, Part No. 1077822, and inserting in its place a Model
C ribbon lift bail stud, Part No. 1117281.
REPEAT KEY LEVERS - MODEL C DEC TAB
The 2-piece keylever, Part No. 1115040, will work only in the 4th
row on Model C Dec Tabs. If repeat keylevers are desired in any
other row, the lug must be modified on the 1-piece keylever to provide repeat action. NOTE: This provides a straight repeat action
only - NOT repeat/non-repeat. This applies to all positions except
39 and 41, which may be loaded to the tab set bracket.
CARBON RIBBON SUPPLY SPOOL MECHANISMS MODIFIED
An extra form has been added to the carbon ribbon supply spool follower arm to help prevent ribbon spill-off. Also, a hole has been
added nearer the fulcrum point of the supply indicator. The "follower
spring is attached to the new hole to provide more uniform drag on
the ribbonfroma full-to-empty spool. In addition, the supply bracket
is now slotted for easy removal of the supply spool.
CHECK FOR REWIND LEVER BINDS WHEN INSTALLING NEW
STYLE RIBBON FEED AND REVERSE SHAFT BEARING
When the new type L. H. ribbon feed and reverse shaft bearing, Part
No. 1118191, is being installed, it may be necessary to slightly
form the rewind lever, Part No. 1118300, away from the new bearing. The rewind lever may bind on the bearing, causing rapid rewi nd back to the ri ght (see Fi gure 1).
3
Bind occurs here.
Form slightly toward front
of machine.
(Figure 1)
CHECK POINTS FOR CARBON RIBBON BREAKAGE
Carbon ribbon breakage and creep can be caused by the spasmodi c
jerking of the take-up spool due to the retaining "C" clip binding
on the take-up gear, Part No. 1117833, when the gear is idling.
The following measures may help solve this problem:
Polish the surface of the gear to eliminate molding marks and remove
.005" from the shoulder of the gear to give a margin of play between
the "C" clip and the face of the gear to allow for any distortion of
the clip.
E13B FONT - CHANGE IN PART NUMBERS
Make the following corrections to CEM #526, Replacement Parts
Section:
Remove the following:
1263754
1263732
Bracket assembly, tab lever
Rack assembly, 17" 1/32 escapement
The above special parts are obsolete and are replaced by the following regular production Executive parts:
1117945
1115607
Bracket assembly, tab lever
Rack assembly, 17" 1/32 escapement
STROKE COUNTER LINK AND BRACKET MODIFIED
The new style margin control bell crank is too wide at its fulcrum
point for machines with stroke counters. It will bind off the former
link to the counter and cause piling. Replace the stroke counter
4
actuating link, Part No. 1014536, with a slightly longer link, Part
No. 1000223. This allows the clevis to clear the bellcrank. The
counter mounting bracket, Part No. 1118727, has been slightly modified to accommodate the longer link. The bracket must be changed
when installing the new link. The part number remains the same.
New counter B/M's contain the modified parts.
DEC TAB LEVER ASSEMBLY NOW AVAILABLE
A tab lever assembly especially designed for use in Dec Tab Model
C's is now available under Part No. 1118049. It will no longer be
necessary to modify Standard tab lever assemblies for use in Dec Tab
ET's. The price remains the same.
SHIFT TOGGLE SPRINGS MODIFIED
The shift toggle springs, Part No. 1078049, have been altered by
making their loops .005" larger. This was done to prevent possible
shift binds due to tight loops. The part number remains the same.
PLATEN LATCH ECCENTRIC LOCKING SCREWS CHANGED TO
HEX HEAD
The platen latch eccentric locking screw, Part No. 7040, has been
changed from a round head to a hex head. The part number remains
the same.
This change was made to allow easier adjustment of the eccentric
when the carriage end covers are in place.
EXECUTIVE SHIFT SHIPPING GROMMET MAY NOW BE USED FOR
CENTERING
Executive ET's are again being shipped with round shift stop grommets
so that operators may use the grommets over the type guide when
centering. The clothespin style of the grommet will continue to be
used for shipping Standard ET's.
PARTS PACKETS CONTENTS SCHEDULED FOR PERIODIC REVIEW
A number of suggestions have been received from the Field on the
contents of parts packets. Provisions have been made for automatic
periodic review of the contents of these packets, adding and deleting
parts according to nation-wide usage figures and other factors such as
5
cost, size, new products, etc. Your interest in the Suggestion Program is appreciated, but suggestions in the areas of service techniques and cost reduction will probably prove most fruitful to all
concerned.
INDEX PAWL LOWER STOP SCREW CHANGED
The index pawl low~'r stop screw, Part No. 63324, has been changed
to a shorter screw, Part No. 1090845. This was done to prevent the
end of the screw from extending through the carriage side frame too
far.
FORM DEFLECTOR FOR FORMS TEARt NG ON ROLLBACK
Tearing of continuous forms during rollback may be traced to the
form catching on the front lips of the deflector. The front lips may
be formed outward as illustrated to remedy this condition. CAUTION:
After forming, be sure the front scale clears all obstructions without
binding.
1960 PARTS MANUAL CORRECTIONS
Change Page 30, Model C Section, Reference Number 23, from
1090346 to 1090343. This was a typographical error.
6
.,
October 11, 1960
TABLE OF CONTENTS
RETURN USED UNIVERSAL PLATENS FOR RECONDITIONING
GRIP RING, REMOVAL AND INSTALLATION
REPOSITIONING INDICATOR
FORMSCARRIER RIVETS
RIBBON TRACKING PROBLEMS
RECONDITIONED PLATENS
THREE TOOTH SLIDERS
INTERMITTENT LOSS OF TIME, 8500 - TE
INDICATING CLOCK CRYSTALS - TE
MOLYKOTE - TE USE
611 TRANSMITTER RECTIFIERS - TE
NEWS LETTER CORRECTIONS
PARTS MANUAL CORRECTIONS
*******
RETURN USED UNIVERSAL PLATENS FOR RECONDITIONING
These are urgently needed in the platen reconditioning program since
Model A reconditioned platens are no longer available.
GRIP RING, REMOVAL AND INSTALLATION
Safe and easy removal is accomplished by sliding the ring off the end
of a shoft. Any attempt to spread will either result in ring damage or
cause it to fly off. With a screwdriver inserted between the ring
and the part against which it rests, the ring can be slid to the end of
------E~~------
the shaft. A finger held over the shaft end will prevent loss of the
ring.
Installation is accomplished by holding the ring (slightly tilted)
against the shaft end. An application of pressure to both sides of the
ring (fingers or long-nose pliers) will cause it to slide on the shaft.
REPOSITIONING INDICATOR CLIP
If you have service calls due to the repositioning indicator wire breaking, try the following corrections:
1. If the clip (P/N 1110453) does not hold the cable securely,
form a loop in the cable as shown in the illustration below.
2. Position the clip 3/8" to the right of the tab on the front rail
dust cover (see ill ustrati on).
3. Place left end of the outer cable flush with the left side of the
retaining clip.
4. Lubricate with #6 oil during each inspection.
Form Loop here
FORMSCARRIER RIVETS
A change in customer forms sometimes reguires that the slitters be repositioned on the slitter blades. Rivet #1100381 has now been made
available to facilitate this change.
RIBBON TRACKING PROBLEMS
When experiencing tracking difficulties, check for worn ribbon lift
bails (P/N 1104468). Some obscure tracking problems have been
traced to bails worn in the area where the cam tails contact the bail.
2
RECONDITIONED PLATENS
A request for a reconditioned platen may be filled with either a universal or a standard Model B platen. If a Model A platen is required
and a standard Model B reconditioned platen is received, the left
hand bushing from a universal platen can be installed. This wi II enable the standard Model B platen to be used in a Model A. The
bushi ng part number is 1110577.
THREE TOOTH SLIDERS
Requests for sliders should be limited to actual requirements for 60
days. These slider numbers are 1116007, 1116008, and 1116010.
INTERMITTENT LOSS OF TIME, 8500 - TE
Intermittent loss of time is often the result of the plastic hours disc
binding under the tens disc retaining flange.
This obscure trouble is eliminated by reducing the diameter of the
hours disc by approximately 1/32 inch. A file or abrasive paper may
be used for this purpose (see illustration).
BINDS HERE
C"I":)
~
~
,I
[email protected]
~\~
---
INDICATING CLOCK CRYSTALS - TE
The use of available compression and/or retaining springs will facilitate installation of oversize or undersize replacement crystals. These
springs are available in diameters of .135, .150, and .165 inch.
They are listed in the TE Parts Handbook on all pages listing crystals.
Their use is as follows:
. 150 spri ng is standard .
. 135 is listed as small and is used with an oversize crystal .
. 165 is listed as large and is used with an undersize crystal.
3
MOLYKOTE - TE USE
Molykote is preferable to IBM #17 on synchronous motor cams and
other machine areas subject to rust. Its application to operating surfaces should be after thorough removal of all old lubricant.
611 TRANSMITTER RECTIFIERS - TE
The Type 83 Rectifier, Part No. 68260, continues to be a high usage
part for Field replacement. It is suggested that the use of the 83
tube should be curtailed wherever possible. In installations in which
full transmitter power is not required, the Type 5Z3 Rectifier, Part
No. 801916, should be used.·ln installations in which full power is
required, the Silicon Rectifier, Part No. 82769, should be used.
For 611 Transmitters on M.A., the far greater life and dependability
of the Silicon Rectifier over the 83 should make the difference in cost
a justifiable economy in many cases.
NEWS LETTER CORRECTIONS
Change page 2, News Letter 70, Volt-Ohm Meter (PIN 801907) to
Signal Level Meter (PIN 801907).
Change page 4, News Letter 82, carriage tension tape pulley spacer,
from Part No. 1092168 to Part No. 1092086.
Change page 4, News Letter 82, margin set lever bracket washer,
from Part No. 1091338 to Part No. 1091388.
PARTS MANUAL CORRECTION
On page 52 of the Model C section, 1960 Parts Manual, change
character designation of position 41 typebar from I/slash to 1/1.
4
EL~CT~ONIC
r-r--- j r-i"-1
I I I I I
1 1,
CUSTOMER ENGINEERING
~ iiiL .~ I'!-. __
, :-
I I I I I
L-
~t-
r
I
3
~~=
I I I I I
r
October 28, 1960
This News Letter has been devoted almost entirely to passing along
helpful hints, service aids, and suggestions from Customer Engineers
a II around the country.
One category of helpful aids comes from suggestion winners. Another
category comes from CE's through correspondence. Other helpful
hints come from several other sources and are intended to keep you
well informed.
TABLE OF CONTENTS
CONTRIBUTIONS BY SUGGESTION WINNING CUSTOMER ENGINEERS
AIDS SUBMITTED FROM AROUND THE COUNTRY
SERVICE HINTS
TECK SPECK SEZ
SOME TIPS ON WIRING
I3ITS TO BITE
********
CONTRIBUTIONS BY SUGGEST/ON WINNING CUSTOMER ENGINEERS
J. W. Miller, Minneapolis
Sticking or sluggish typebars can cause the punch clutch to cycle
twice giving double punching or repeat punching. If the typebar is
slow restoring, the type interlock contacts don't open fast enough.
This will allow the punch to start another cycle. If a punched card
is in the read station when a typebar sticks it may cause additional
punches to operate from holes read by the sensing pins.
------IB~------
r-f--
K. P. Charron, Pittsfield, Mass.
A possible cause . . . .
Check the tab cam contact air gap if you are getting an intermittent
skip of an extra field on card punches. The tab cam contact made
too soon and held too long will cause an extra skip cycle. Increasing
the air gap may correct this problem.
K. P. Charron, Pittsfield, Mass .
. A service hint for use in scoping duo relays 2, 3, 4, 5, 6, and 7
follows: Using a buffer or keyboard entry test tape, enter a zero.
Pull relay 218 and depress program start.
The ET will go into a continuous spacing operation. The above duols
will run in a non-functional race allowing you to quickly scope the
timing of these relays.
J. W. Butts, San Francisco
Check CEM 52 ! ! ! !
Can you state that you have all these changes recorded as the last
sentence of the CEM reiterates? Be sure any changes you have made
on any 632 are recorded on the machine wiring diagram index or Page
0-010 of the System Diagrams.
M. A. Endacott, San Antonio
Donlt throwaway all of your old platens. For 632 1 s that use pin feed
platens keep an old standard platen in the machine for use with the
functional test tapes. (The end of the machine beneath the print box
is a good place.) Often the space between pins is not enough to run
complete lines of test typeout. A standard platen is a handy thing to
have around in cases like this.
H. E. Massa, Elizabeth
Use an insulated or non-conductive tool to vibrate directly on the
electronic gate sockets. Some examples of existing tools are a section of a used "red handle cleaning brush"; type cleaning brush handle or the TE slug tuning tool PIN 74738. Tap the end of this insulated tool with another tool to obtain the vibration.
Teck Speck says:
"Donlt ~be vibrated,
Use tools that are insulated. II
2
J. M. Kiblinger, Miami
A service hint to aid in relieving high resistance in the ET Program
Unit is to make sure the windows in the adjusting plate and the crook
of the program contact wires are clean. Use a burnishing blade or
other sharp tool to clean the windows.
G. R. Arozarena, Cincinnati
Use the 48 V test lamp, PIN 802000 for a continuity check on Program Drum Starwheels.
Here's how: Punch a test program card 12 thru 9 repeated for eight
times or to the card end. Place on drum and lower the starwheels.
Remove starwheel terminal shields. Place the 48 V test lamp on any
starwheel screw, 12 down to 9, and press the release button. You
should be able to count 8 flashes of the light. This procedure can be
followed for each and every starwheel. This procedure, however, is
a continuity check and cannot be used accurately for contact timing
or for contact bounce.
J. F. McConnell, Louisville
Use the following aid as a tool for checking keyboard entry, field
length and typeout results instead of program tapes. Tear or cut a tab
card to the dimensions shown below. Insert over the starwheels and
lower the tape lid to hold in position.
J15S5557S0S3606162GJ64
2 2 2 2 2 2 2 2 2 2 2 22 2 2 22 2 2 2 2 2 2 2 2 2 2
333333333333333333333333333
444444444444444444444444444
5555555555555555555555555555
666666666666666666666666666
777)) 7 7 7 7 77 7 7 7 7) 7 77 7 77 7 7 771
888888888388838888888888888
Section A will give you field beginning, alternate digit capacity with
no punctuation. Section B will give you field beginning, maximum
digit capacity, and no punctuation. Since channel 8 is always made
there is no need to position the ET carriage for type out of buffer.
3
A. L. Kelly and C. Bushelon, (DP), White Plains
If you are having trouble with cards stickingor catching between the
upper plastic card guide and the metal rail as they move from the
punching station, then replace the clear plastic card guide with the
new style guide (same as PIN 345644, available from DP). The card
will be flattened closer against the card bed.
G. R. Arozarena, Cincinnati
Be certain that the card punch program starwheel contact straps are
perfectly straight while cleaning them. Their adjustment is lost if
these straps get bent.
M. A. Endacott, San Antonio
A lock up in repeat type out of the same number may be due to excessive rebound of the typebar after falling back against the type
rest. The typebar may be in the peak of a bounce when the type
magnet is impulsed for the second character and will not allow the
cam to contact the power roll. For example: You found a lock up
on the third four when the 632 was supposed to have typed $444.40.
This may have been caused by this excessive bounce. It may be necessary to increase tension on the type rest spring or to replace the
sleeve spring (IYN 1105693).
M. A. Endacott, San Antonio
An aid in visually reading channel punches of program tapes is to cut
off the first 2 1/2" to 3" of an old program tape that still has the
channel markings on it. Place the program tape over this small
guide and move the tape until the desired column is directly over
the channel markings of the guide.
J. M. Kiblinger, Miami
Correct CEM #30, Change "IBM PIN 326370" to "IBM IYN 326364".
Add to 632 Parts Manual, Capacitor listing, page 9, "326364 .047
mfd. 400 Vi 10%" under reference 31 .
P. B. Blair and B. L. Erickson, Lexington
Can't reset storage groups and you need a place to start? Try hold-.
ing 109 latch tripped with your finger for a line of the diagnostic
tape.
P. B. Blair and B. L. Erickson, Lexington
Don't throwaway the green felt covered shipping blocks when unpacking a 632. They make fine seats and even better knee blocks.
4
F. A. Papst, Lexington (Formerly Youngstown)
Success has been made on tightening loose duo relay contact points.
Use the long nose pliers, but to protect the contact surface place a
small piece of mylar program tape between the plier jaw and the
contact point.
AIDS SUBMITTED FROM AROUND THE COUNTRY
Brooklyn, New York
Check the wick in the print wire housing of 636's for oil. The wick
should be lubricated as per item 3 under Print Wire, page 12-57 of
the 632 Reference Manual.
R. V. Dujmich, New York Uptown
Card Punch - Program sensing contacts sometimes wear their surfaces
flat and pit or burn one or both surfaces. The source of the arcing
may be checked but the point should be replaced. A concave surface can cause variations in make and break timing.
V. Glasspool, Los Angeles Wi Ishire
If you have a resistor blown in a scale of the Ohmmeter the needle
wi /I zero even though resistance may be present in the component
being measured.
J. M. Kiblinger, Miami
Corrected a problem when he found a DS unit in an older machine
that had the metal center ground pin. A naked wire was shorted to
it. Check your DS-12's in the earlier 10000 serial numbers, if you
are having troubles.
J. W. McCabe, Washington
The 150 V failures causing the keyboard not to restore, requiring the
operator to turn the 632 off and back on may be caused by the RY 1
AL n/o point. Check for arcing or dirt accumulation on the points.
SERVICE HINTS
Loose Diodes
Diodes in all "D" pluggable units should be checked periodically for
looseness. Those that may tend to loosen much faster wou Id be those
pulled out and snapped back while servicing the machine. The diode
clips in the new style "D" unit (Clip snaps through fibre board) will
spring back to rest without readily changing the gripping power of
the clip jaws when diodes are inserted or removed. The old style
diode clips (clip riveted to fibre board in unit) would change the
gripping strength after a diode had been inserted and removed a
number of times.
5
PM Schedule
Account for all your inspection dates on the Preventive Maintenance
Schedule and Record Card (Form 241-5038-0) kept in each machine.
This should be usedas the equivalent toan ET Service Sticker. Someone else working in your territory may not know what has been inspected if the record is out-of-date.
Service Aid from 632 Assembly Line, Lexington Plant
We can place a check on borderline program reading by manually
holding down R 219. It will not reveal all cases of borderline program reading but is certainly worth trying as a diagnostic technique.
Wire Contact Relay Information
Much apparently contradictory information has been released concerning wire contact relays, although at the time of publication it was
accepted as being correct.
To review the latest information, the following excerpts were taken
from a letter to all Branch Offices dated June 17/ 1960, on the subject of wire contact relays (signed by W. A. Pribble):
"Section 1 of the CE Reference Manual on relays (Form 22-5857-2)
gives proper information on what constitutes a good relay. A minimum of adjustments should be made in the Field but under certain
conditions some adjustments wi II be necessary. "
"To measure the tension per pair of wires the leaf of the gage
should be placed between the wire bracket (insert molded to the
armature) and the contact terminal. "
"A difference of approximately three grams between the wire
bracket and the contact terminal can be experienced by tilting
the tip of the blade. An error in reading the gage may also introduce as much as a 1 to 3 gram error in addition to the original
3 grams."
"Because of the less accurate method of reading gram tension in
the field, some relays received from the plant may not fall within
the 15 to 18 gram category listed in the relay Reference Manual.
The Reference Manual lists the tension with the maximum accumulated error with the leaf type gage. "
"News Letter #2 listed wire contact tension on new relays as normally being 10 grams. This gram pressure has reference to tension
at the tip of the wires (within nlo, nlc contact terminals) and
not the reading obtained on a leaf gage between the contact terminal and the wire bracket. "
6
Any time new information on a subject is received, accept it to .supercede prior information on the same subject.
********
Did you know that many 632 parts are now located in Emergency Parts
Centers? Check the EPC parts listing for a part needed in a hurry!
TECK SPECK SEZ
When installing RPQ or MES changes that involvewiresand taper pins
or spade clips, solder the terminals to the wires, always using rosin
core solder.
********
A few mylar program tapes were shipped to the field with a poor bond
on the ink markings. Flaking of the ink is a sure sign of one of these
bad tapes. A quick check for a bad tape is to flex it sharply and see
if the ink loosens.
********
If you are having troubles between the pick and hold of wire contact
relays, check this: Some wire strands may not have been crimped in
the pick or hold terminals properly. These loose strands may be shorting the pick and hold terminals together.
********
If the 159-5 n/o points were shorted, a "one bit" would be added to
the multiplier each time the multiplier was being placed in the counter
bit relays by type matrix relays. The product of the multiplication
would appear as though it received an extra over and over add of the
multiplicand.
This failure would not occur, however, if a "one bit" were required
in the bit logic of a multiplier digit. Even numbers of the multiplier
would cause consistent failures if the 159-5 n/o point was continuously shorted.
This type of failure is not limited specifically to "one bits" in digit
logic; it could be caused by "two, four, or eight bits" in the multiplier digit if the 160-5 n/o, 162-5 n/o or the 163-5 n/o were shorted
continuously.
For example, suppose the 159-5 n/o point were shorted and the multiplier was a "3". No failure would be apparent in the product of a
multiply. The digit 3 requires a "one bit" and a "two bit" in a digit
logic. If a multiply were performed with the digit "2" as the multiplier {and the multiplicand were the same} the product of the multiply
would be the same as was obtained with the multiplier of "3". The
digit "2" only requires a "two bit" but the shorted 159-5 n/o also
picks the "one bit" relay causing an extra over and over add of the
multiplicand.
7
Examples of simple and compound multipliers follow:
Multiply a quantity of two times a price of $1.00, supposing the
159-5 nlo were shorted. 2 x $1 .00 = $3.00 (an error).
Multiply a quantity of three times a price of $1 .00 with the same
point shorted. 3 x $1.00 == $3.00 {same as above}.
Multiply a quantity of 23 times a price of $1.00 with the 159-5
n/o point shorted. 23 x $1.00 = $33.00.
Try other combinations with 160-5 nlo shorted. This would convert
5's to 7's, 4's to 6's, 6's to 8's, etc. Determine what some results of
these point faulures will look like. Some of the failures may be recognized immediately. {Note: Because of the similarity, do not
confuse these failures with the type that are discussed in CEM 51A.}
SOME TIPS ON WIRING
Wiring diagrams should be followed when adding special features or
making wiring changes in 632's. Cable drawings should be used only
for reference, not to plug individual wires by. Wiring diagrams may
be more up-to-date than cable drawings. Sometimes it is economically sound to use a supply of cables to an older engineering level
when it is only a matter of adding or not using a few wires.
When wiring changes or special devices are made in machines, be
neat. The wires should run along cables and down or up to other
cables. Don't be a "Cross Wire Willy" and run wires helter-skelter
across the gates.
When removing Special Features or changing from one to another, remove the old MES/RPQ completely. There are no instructions in any
change to "cripple" parts of a MES/RPQ. All instructions are to
remove. This rule must not be violated.
********
From the Test Lab:
Lightly lubricate the pedestals of duo relays on each inspection.
********
A quantity of Blue System Diagrams covers were received from the
binder manufacturers and are now being released in 632's. The normal color would be ET Green, but due to the urgent need for covers
when these "off color" covers were received, the Plant decided to
ship them. We will return to green when the blue supply is exhausted.
********
8
New wire contact relays shipped recently may exhibit difficulties
with the rubber damper bumper moving. These bumpers are prone to
unseat when the relay has been shipped upside down. Twelve position relays generally present more trouble than 6 or 4 position relays.
If the bumper has shifted it will appear as though the relay n/c contacts were bouncing.
To correct this problem place the thumbs on each side of the armature
and force the rubber damper back in place.
BITS TO BITE
You are scoping electronics with the test switch in the off position
and no storage selection relays picked. Trigger the scope on a zero
pulse, .2 volts/div. and time/div. on 20. You probe test the output
obtained at Rp 11. Two waveforms appear on the face of the scope,
however, the left one of the two has a closed trace. Is this waveform correct? Why? (Answer in next News Letter.)
Answer to Bits to Bite in News Letter #2:
"Read CEM #18 and Form No. 241-5070-0 entitled 'Detailed Pre--ventive Maintenance Procedures for Intermittent Failures - 632 Electronic Typing Calculator' for this information. "
9
November 29, 1960
TABLE OF CONTENTS
PARTS PACKET #7, PIN 1280107
SPECIAL SEGMENT REQUIRED FOR MID-CENTURY TYPE
EXECUTIVE ESCAPEMENT FAILURE
RIBBON CONTROL LEVER, PIN 1071935
EXECUTIVE TAB SET HINTS
SIGNAL TRACER, PIN 9900160
TRIPLETT METER
MARGIN CONTROL BELLCRANK ADJUSTING SCREW
SAFETY GLASSES
RIGHT HAND RIBBON SPOOL GATE
CLEANING TYPEWRITER COVER
FABRIC RIBBON ACTUATING SPRING, PIN 1090589
PARTS MANUAL CORRECTIONS - MODEL C SECTION
CEM CORRECTIONS
*******
PARTS PACKET #7, PIN 1280107
A number of these packets were assembled with the old style indicator
window, PIN 1117321. These packets should be used and new style
windows ordered independent of the packets. Future packaging will
include the new style window.
---18M---
SPECIAL SEGMENT REQUIRED FOR MID-CENTURY TYPE
When ordering a segment for a Mid-Century ET, be sure to order the
special 86 character segment, PIN 1115083 or the 88 character segment, PIN 1093921. Other segments will not work with this type
style.
Add these part numbers to page 66, A and B Section, and page 50,
C Section, 1960 Parts Manual.
EXECUTIVE ESCAPEMENT FAI LURE
Check for a loose rai I support bracket screw, PIN 1079999 (Ref 302132). A lock washer is now being installed under this screw.
RIBBON CONTROL LEVER, PIN 1071935
Material thickness has been increased in the area of the set screw to
prevent set screw strippage. Current production machines incorporate this improvement.
EXECUTIVE TAB SET HINTS
1.
2.
3.
4.
Clear all tab stops.
Carriage return to margin.
Set expand key to expand.
Space with the 3 unit spacebar (expanded to 4 units). The tab
set can be operated anywhere the carriage stops.
SIGNAL TRACER, PIN 9900160
Because of previous experience with shelf life battery deterioration,
signal tracers will be shipped without batteries. Two 1 1/2 volt
cells of the same type used in the recently announced Triplett VOM
(PIN 9900167) are required. The following OJ any other equivalent
battery wi II be satisfactory:
Mallory RM - 401 R
General EP 671
Eveready 904
NEDA 910
TRIPLETT METER
Test Prod Tips: The tip of the black lead test prod assembly is designed to be removable (see page five of Triplett Instruction Manual).
If you prefer that this tip be non-removable, modify as follows:
1. Pull tip from test prod.
2. With a small screwdriver, remove the threaded insert(RH threads}
from the plastic insulating tube.
2
3. Solder the tip to the threaded insert and reassembl e the test prod
assembly.
Alligator Clips: When either a new meter or test leads are received,
the alligator clip may require adjustment. Proper fit to the test prod
tip is adjusted by either opening or closing the slot in the alligator
clip shank.
MARGIN CONTROL BELLCRANK ADJUSTING SCREW
This screw has been hardened and is now black Du-lite. The old and
new parts are interchangeable. Part numbers are as follow:
Old PIN
641 - -
Price
New PIN
Price
$.01
1116031
$.05
SAFETY GLASSES
Do you wear yours? We thought you would be interested in the recent personal experience of a Customer Engineer and his safety
glasses.
Ron Hamilton is an ET Customer Engineer assigned to the Kansas City
office. In September he was working on a Time Recorder when a
"hot" wire accidentally shorted to the backplate. The resulting arc
threw small pieces of metallic material into his face. The lenses of
hi s safety glasses were scratched and pi tted beyo~d repai r.
Why tell you about it? Because Ron was not injured and was able
to continue his normal way of life. There is no bigger booster for
safety glasses than Ron anywhere in IBM. Ron says, "As of today, I
am a firm believer in safety glasses."
Safety glasses were desi gned to protect you. They are recommended
for use when you are riveting, dri lIing, removing pins, cutting
springs, soldering, and other similar activities. A good rule to
follow is to wear your glasses whenever an actual or potential hazard
exists. If there is any doubt, wear them.
RIGHT HAND RIBBON SPOOL GATE
Reports indicate that the gate does not always move freely and therefore may not move into the path of the sensing finger. To free up the
gate in those cases where the gate pin appears to be too tight in the
spool hole, remove the gate, ream out the spool hole with the six
fl ute bristo wrench (#9900102L and replace the gate.
CLEANING TYPEWRITER COVER
Sometimes stubborn stains on typewriter covers won't come off with a
regular application of NL Concentrate. Some CE's successfully use
3
a penci I type eraser to rub these spots gently whi Ie the cover is wet
with concentrate. If you try this method don't rub so hard that you
damage the finish.
FABRIC RIBBON ACTUATING SPRING(P/N 1090589)
In News Letter 82 we advised this spring was eliminated and gave
reference #213-72. This should have been reference #213-80 (clutch
stop lever spring), same part number.
PARTS MANUAL CORRECTIONS - MODEL C SECTION
Carriage and Rai Is Section - Standard - page 3, reference 139.
Change PIN of screw to 1079999. Add washer PIN 62031. Executive - page 31, reference 132, change PIN to 1079999. Add
washer PIN 62031.
Platen Section - Standard page 15 and Executive page 43, reference
2 and 12. Change PIN of screw to 1116388. Standard page 15 and
Executive page 43, reference 1 (both sections) - change to "Button,
platen vari gray."
Ribbon Section - Standard page 17, reference 120; Dual Ribbon Feed
page 20, reference 152; Executive page 45, reference 49 - change
PIN of screw to 1115389.
Cover Section - Standard page 6, reference 36; Executive page 33,
reference 34 - change PIN of screw to 1090731.
CEM CORRECTIONS
CEM531, filed under "SpaceBar" -change PIN 1116079 to 116079.
Change pri ce from $.05 to $.50.
CEM539, filed under "Safety" - add price of clip, PIN 1115982,
$.05.
4
December 25, 1960
- - - IBM - - -
This is the season when all of us as individuals
should review the year that is ending and plan
for the year ahead.
I sincerely appreciate your many individual contributions which helped us attain our divisional
goals this year. Some of these may have appeared small at the time, but in total they added
greatly to our reputation for outstanding service
and complete customer satisfaction.
I am confident that 1961 wi II be one of the best
years in our history.
However, each of us must
continue to put forth his best individual efforts
to make this prediction come true.
We sincerely thank you and wish you and your
families health, happiness, and prosperity in the
coming year.
2
TABLE OF CONTENTS
EMBOSSING PROBLEMS, SIGNET AND PORTFOLIO ELEVEN TYPE
STYLES
SPRING LOADED INNER CARRIAGE TO REDUCE IMPRESSION
TROUBLE
EXECUTIVE ESCAPEMENT PAWL BIM 1270778, 1270779, & 1270780
REPEAT SPACE BAR, MODEL C
ET MAIN SPRING DRUM ASSEMBLY - ALL MODELS
CEM CORRECTIONS
******
EMBOSSING PROBLEMS, SIGNET AND PORTFOLIO ELEVEN TYPE
STYLES
All machines with the above specifications are now being shipped
with a 14 tooth motor pulley and a number 1 platen in order to reduce
embossing problems.
SPRING LOADED INNER CARRIAGE TO REDUCE IMPRESSION
TROUBLE
The inner carriage on any Model C may be spring loaded to prevent
floating. Install PIN 1116137 (L.H.) and PIN 1116138 (R.H.) new
style springs and two spring anchors, PIN 1013363, as shown in the
illustration below.
Form Anchor Here
PIN 1116137 or
1116138, spring
The former method of spring loading the inner carriage used a stud,
PIN 1115316, and spring, PIN 1115331 (See CEM 532A). Field replacement of this stud is impractical, however, the method shown in
the illustration can be used if the stud, PIN 1115316, breaks.
3
EXECUTIVE ESCAPEMENT PAWL B/M 1270778, 1270779, & 1270780
The B/M's now include eight escapement pawl springs, one escapement pawl pin, and one escapement pawl stop. The price of these
B/M's wi II remain the same unti I the next general price revision.
REPEAT SPACE BAR, MODEL C
Heavy action of the repeat space bar may be reduced by substituting
the Model B repeat plunger spring, PIN 1105514, for the Model C
spring, PIN 1115210.
ET MAIN SPRING DRUM ASSEMBLY - ALL MODELS
Whenever it is necessary to remove the carriage tension tape from the
spring drum, the following suggested safety measure should be observed to prevent possible injuries from the main spring drum.
A 30 inch carriage tension tape #1073036 should be carried in the.
tool bag at all times to be attached to the next drum lug before re.,.
moving the typewriter tension tape. In this mcmner, it will be possible to control the unwinding of the mainspring with no danger of the
drum slipping from your grasp.
When the main spring is to be wound up again, it is a simple process
to do so by pulling on the extra tension tape. This method assures
the same carriage tension as before the main spring was unwound.
CEM CORRECTIONS
CEM 549A, Records Section - change PIN 1090217 to PIN 1092017.
4
December 28, 1960
TABLE OF CONTENTS
INFORMATION:
RADIO INTERFERENCE
DOUBLE TALK AT LEFT MARGIN - 211
MOTOR PULLEY NOISE
BACKSPACE FAI LURE
NO OUTPUT
LOW AMPLIFIER GAIN
GUIDE RAIL
MIKE HANGER
TEST BELT MATERIAL
SERVICE HINTS:
SPEEDY SPEED CHECK
BELT LAMP REMOVAL
LISTENING DEVICE IDENTIFICATION
CORRECTIONS:
REFERENCE MANUAL AND PARTS MANUAL
***** *
RADIO INTERFERENCE
If a local radio broadcast is picked up, connect a .005 mfdcapacitor between the base of TR-1 and ground. This wi II shunt the RF si gnal to ground without affecting the recorded signal. I BM PIN 1132681
may be used.
DOUBLE TALK AT LEFT MARGIN - 211
Occasionally, information from two recorded channels wi II be reproduced after backspacing completely to the L. H. margin on Models 211
and 213. However, the signal should be clear after the belt rotates
180 0 or 1/2 revolution, maximum. This should not occur on Model
212.
--IBM
The belt and lead screw turn at the same ratio, i.e., 1 :1. When the
carriage is backspaced into the L. H. margin, it is possible for the
lead screw to be 1/2 turn from the original starting position of the
recorded information. If the transport gear falls to the left side of a
lead screw thread, the transport gear will be camming into proper
mesh during the first 180 0 of lead screw rotation.
The transcriber, Model 212, when adjusted properly, wi II not produce the above condition since the L.H. margin is adjusted .025"
further to the left, the follower should be in proper mesh at the start
of the recorded information.
MOTOR PULLEY NOISE
A faint popping noise may be noticed as the motor pulley set screw
hole contacts the drive belt when running. This results from captive
air and may be quickly eliminated by cutting a small vee notch in
the rubber drive surface, between the hole and outer edge of the
pulley. This vents the hole and, provided the notch is narrow, has
no effect on fl utter.
BACKSPACE FAI LURE
Malfunction of the backspace may occur if the pawl carrier pivot
screw is tightened excessively. Check for binds after replacing this
screw.
NO OUTPUT
Listening Device:
Check for proper listening device cord. Machines prior to serial
numbers 212 - 100425 and 213 - 100210 require cord #1132730.
Machines after these serials use cord #1133716.
Cord #1132730 may be identified by the absence of a mark on the
machine plug connector. Output is via pins #M-ll and #M-12/13,
pins 12 and 13 being jumpered together.
Cord #1133716 may be identified by a small numeral 1 molded on the
machine plug between the prongs. Output is via pins M-9 and M-12.
These cords are not i nterc hangeab Ie.
Foot Control:
If the machine in question is above serial number 212 - 100425 or
213 - 100210, check for the new style foot control. A pronounced
click will be noticed when depressing the playback side, as compared to the reverse side. With the playback switch down, zero ohms
are read between pins M-7 and M-5.
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Clutch Contact:
Insufficient rise or a dirty clutch contact results in a loss of signal.
If the signal is present at terminal C-10 but not at C-8, check and
clean the clutch contact.
On Model 213, if an output is present at C-10 but not at C-14, the
reverse contact may be at fault.
LOW AMPLIFIER GAIN
Degeneration or low amplifier gain may occur by as much as 60%
while all resistance, voltage, and current readings check normal.
Generally, this is the result of an open capacitor in an emitter circuit. For a quick check when this condition is encountered, bridge
the emitter capacitors, one at a time, with a known good capacitor.
Since results are dramatic, the capacitor may be held in place while
checking, eliminating soldering and resoldering.
CARRIAGE GUI DE RAI L
When replacing the guide or guide rai Ion the early demonstrator machines, both rail and guide must be changed. A reduction on rail
thickness is noticed. Part numbers remain the same since old style
parts are not avai lable.
MICROPHONE HANGER AND MOUNTING BRACKET
When replacing the microphone hanger on the early demonstrator machines, both the hanger and its bracket must be replaced. The
mounting slot of the hanger was moved up and no longer appears as
illustrated in the July 1960 parts catalog. Part numbers remain the
same since old style parts are not available.
TEST BELTS
IBM Executary test belts are available on the red oxide belt only.
This material has been found satisfactory for test purposes.
As a result of recording the first test belts by hand, several reports
have indicated that the three test signals were slightly out of phase.
Retuning was required between signals. Improved manufacturing
techniques have corrected this condition.
SPEEDY SPEED CHECK
Using the IBM Magnabelt, count the number of flashes as the belt
revolves over the indicator lamp. On Model 211, approximately 80
flashes per minute should occur. For Madels 212 and 213, 76 flashes
at the slow speed and 84 flashes at the fast speed position should
occur per minute.
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If you wish, reduce these figures 1/2 for a 30second check, however,
do not expect as accurate resu Its.
BELT INDICATION LAMP REMOVAL
Insert a Model C Decimal Tab rubber bail stop, PIN 1118139, in the
socket of the 5/16" nut driver. The driver will now firmly grip the
tip of the lamp for removal or replacement. Support the bottom of
the socket to prevent lamp misalignment.
LISTENING DEVICE IDENTIFICATION
In order to quickly identify your listening device from the operator's,
mark it with your initials or a stripe of paint.
CORRECTIONS
IBM - 210 Reference Manual, page 18A, terminal C-8 between the
speaker switch and reverse contacts should be changed to read C-14.
Also, the terminal between the output transformer and the clutch
operating strap should be labeled C-l0.
IBM - 210 Parts Catalog, page 2, illustration reference numbers only:
Reference #56, a nylon washer to the left of the flywheel bearing
#78 should be changed to read #57. Reference #59, same location,
should be changed to read #56. Also, reference numbers 57 and 59
appearing to the right of the bearing assembly should be transposed.
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