Eaton Transmission T-955 Service Manual

Service Manual

Fuller Medium Heavy Transmissions TRSM0202

October 2007

For parts or service call us

Pro Gear & Transmission, Inc.

1 (877) 776-4600

(407) 872-1901

parts@eprogear.com

906 W. Gore St.

Orlando, FL 32805

Service

Manual

·Operation

•

Lubrication

·Maintenance

·Repair

T-955

©Eaton

Corporation

Transmission

Div.

-1973

Series

Fuller® Twin Transmissions

Countershaft

Eaton Transmission Kalamazoo,

Corporation

Michigan

Division

l+MH·+•...__

_______________________

_

Table

Model Designations Description Specifications Gear Ratios Operation Lubrication Preventive Disassembly Precautions Disassembly Instructions

I.

Shifting Controls A. Low Gear Shift Air System (T-955ALLModels) B. C. Shift Bar Housing Assembly

II.

Clutch Housing, Companion Flange and Auxiliary Section A. Removal B. C. Front

III.

A. Auxiliary Drive Gear Assembly B. C. Right Countershaft Bearing Removal D. Mainshaft Assembly E. Left F. G. H. Right Reverse Idler Gear Assembly

IV. Auxiliary

A. First-reverse B. C. First Speed Gear,

V. Auxiliary

A. Auxiliary B. C. Low Gear Shift Cylinder D. Range Mainshaft E. Low Speed Gear,

....................................

...................................

.....................................

...................................

Maintenance Check Chart

Gear Shift Lever Housing Assembly

Companion Flange or Yoke Auxiliary Rear Section

Section

Left Reverse Idler Gear Assembly

Countershaft Bearing Removal

Input

Shaft and Drive Gear Assembly

Countershaft Assemblies

Auxiliary Countershaft Assemblies

and Rear Bearing Assembly

Sliding Clutch and First Speed Gear

and Rear Bearing Assembly

.............................

.................................

................

........................

.........................

..........

................

of

the Clutch Housing

.....................

.......................

...................

Section - T-955AL, T-955GL Models

Speed Sliding Clutch Gear

Output

Section - T-955ALL Models

Cou~tershaft

..........................

Output

Shaft

Assemblies

...................

Shaft

..............

.................

...............

.............

..........

............

...........

................

............

..........

.................

..........

.........

of

10 12

.14

15

..

.16 .17 .18

22 23 23

24 26 28

29 .31 .32 .34

35

36 .37

.38

40 .41 .42

44

45

Contents

.3

4 .4 .5

6

Inspection Gasket Locations Torque Ratings Reassembly Precautions Reassembly Instructions

I.

Auxiliary Section - T-9 55 ALL Models A. Low B.

Rear Bearing Assembly C. Low Gear Shift Cylinder Assembly D. Range Mainshaft and First E_

Auxiliary Coup.tershafts

II. Auxiliary

A. First B.

Output C.

Auxiliary Countershaft Assemblies D. First-reverse Speed Sliding Clutch

III.

Front A. Right Reverse Idler Gear Assembly B.

Countershaft Assemblies C. Drive Gear Assembly D. Left Countershaft Installation E. Mainshaft Assembly

F. Right

G. Left Reverse Idler Gear Assembly

H.

Auxiliary Drive Gear Assembly

IV. Clutch Housing, Companion Flange

and Auxiliary

A. Clutch Housing

B.

Auxiliary Rear Housing C. Companion Flange

Shifting Controls

V.

A. Shift Bar Housing Assembly B.

Gear Shift Lever Housing Assembly C. Low Gear Air System (T-955ALL Models)

Air

System

Mainshaft Axial Clearance Chart Tool Reference

...................................

..............................

...............................

..........................

........................

Speed Gear and

Section -T-955AL, T-955GL Models

Speed Gear and

Shaft and Rear Bearing Installation

Section

Countershaft Installation

Section

....................................

................................

Output

.......................

...........................

or

Shaft.

....................

Speed Gear

...................

Shaft

....................

................

...............

.....................

Yoke

.................

...................

.............

...........

.........

............

...........

.....

......

.46 .4 .48

49

.50

.50 .52 .54

56

.58

60 62 64 65

66 68

70 73 74 81 82 84

86 87 87

88 92 93 94 9 5 96

7

2

Model

Designations

T-955AL T0-955AL T-955G L T-955ALL -Seven T0-955ALL-

Unless stated otherwise, this manual applies to all models in the T-955 series which includes: T-955AL, T0-955AL, T-955ALL, T0-955ALL, T-955GL

- Six speed,

- Six speed, overdrive. Six speed, gathered ratios.

Seven

direct

speed,

direct

speed, overdrive.

drive.

NOTE

Illustrated

parts

lists

with parts numbers are available upon request.

3

Description

These

950

lb.-ft. torque capacity units are designed to take advantage gines and to vehicles.

The T-955AL and T0-955AL six speed models have ratios for construction vehicles, especially dump truck operation. The 11.17 low gear provides ample reduction for starting heavy loads, yet can

ping vehicle. The two reverse ratios, progressively shifted,

provide fast backing speeds plus deep reduction for job-site spotting. The T0-955AL overdrive model drive ratio where heavy duty drive axles are needed and ratio choices are limited.

of

the power curve

give

the ratio spread necessary for construction

be

of

the high torque

shifted progressively without stop-

gives

rise

en-

a .65 over-

Specifications

Speeds

T-955AL, GL: 6 forward speeds, 2 reverse T-955ALL: 7 forward speeds, 3 reverse

The T-955ALL and T0-955ALL seven speed models, cially suited for the reduction for extremely adverse conditions, also ratios for curbing and paving. Three reverse ratios stockpiling, T0-955ALL overdrive model speeds when heavy duty axle ratio choice

The T-955GL model has special vehicles operating primarily on highway.

Torque

Clutch

both

job-site

Rating

Housing

dump and mixer operations, provide

give

work and load spotting. The

is

available to obtain highway

is

limited.

"gathered" ratios for

950 lb.-ft.

Size

SAE

No. 1, 2 aluminum

espe-

a range for

Power

PTO

Take-Off

Right Side: regular duty, 6-bolt type

45

tooth

PTO gear

Bottom: heavy duty, 8-bolt type

4 7

tooth

PTO gear

Gear

Relative

T-955AL: .533, right side and

T-955GL: .700, right side and

T0-955AL: .820, right side and T-955ALL: .533, right side and T0-955ALL: .820, right side and

Speed

to

Input

bottom bottom bottom bottom bottom

R.P.M.

Length splines

(from

on

T-955AL, GL: 30 T-955ALL: 34

face

tailshaft)

Weight

T-955AL, GL: 580 lbs. T-955ALL: 646 lbs.

Oil

Capacity

T-955AL, GL: T-955ALL: 28

(pints)

of

25

clutch

7/8" 1/16"

housing

to

end

of

4

T-955AL

SPEED RATIO %STEP

6th

1.00

SPEED RATIO %STEP SPEED RATIO %STEP

6th

T0-955AL

54% 54%

GEAR RATIOS

5th

1.54

5th

1.00

55% 54% 43%

4th

2.38

4th

1.54

58% 58%

3rd

3.75

3rd 2.44 3rd 2.99

69% 69% 62%

2nd 6.35

2nd

4.13

76%

1st 11.17 1st 7.26

Hi

Rev.

Lo

Rev. 11.40

6.48

Hi

Rev. 4.21

Lo

Rev. 7.41

.65

T-955GL

6th

1.00 31%

5th

4th

1.31

1.87 60%

2nd 4.84

76% 76%

1st 8.51

Hi

Rev.

4.94

8.69

Lo

T-955ALL

SPEED RATIO

6th

5th

4th

3rd

2nd

1st

Lo

Hi

Rev.

Lo

Rev.

Lo-Lo Rev.

1.00

1.54

2.38

3.75

6.35

11.17 1st

26.54

6.48

11.40 27

.09

RATIOS

GEAR

T0-9SSAL

%STEP SPEED RATIO

6th

54%

5th

1.00

%STEP

.65

54%

55% 54%

58%

4th

3rd

69%

2nd

76%

1.54 58%

2.44 69%

4.13 76%

7.26

138% 138%

Lo

Hi Lo

Rev.

17.25

4.21

7.41

Lo-LoRev. 17.61

5

Operation

In the following instructions it is assumed that the driver coordinate the necessary movement

of

the shift lever and clutch pedal

either direction, up or down.

Six

Speed Models

T-955AL, T-955GL & T0-955AL Models

To shift from neutral to:

1st

- shift thru 2nd.

Reverse

T0-955AL

lo-

the

shift thru reverse-hi

On overdrive model

5th & 6th

speed positions are reversed

1.

Start engine with gear shift lever in the neutral position.

2. To start vehicle moving, shift into the 1st speed position. This

is

done by moving the gear shift lever through the

gear

2nd speed may be necessary to feather clutch 2nd).

Move

position with the clutch disengaged (it

to

move lever into

lever through the 2nd speed gear position to

the extreme left, then push lever forward into 1st gear.

NOTE: the neutral position between neutral position

While

moving the lever into first

can

be used

2nd

and 1st

at

stop lights, etc.

you

may feel

gears.

This

is

familiar with motor trucks and tractors, and that he can

to

make progressive and selective gear engagements in

3. After vehicle has gained sufficient speed in 1st gear, shift lever into the 2nd speed position.

4. Shift from 2nd to 3rd

by

moving lever from the extreme right in the second speed gear position into the 3rd speed position.

NOTE: A spring and plunger will move the gear shift lever to the extreme right

When

shifting from 1st to

in

the

2nd

speed

gear

2nd

the gear shift lever will be

position.

moved to the extreme right position; when shifting from 2nd

to 1st, operator must move lever to the extreme left

in

position while

2nd gear position against the spring

pressure.

5. Shift on upward through pattern.

On

overdrive models, the

4th,

5th

and 6th in the shift

5th

and 6th speed gear

positions are reversed.

Reverse and

To

shift into reverse, move the gear shift lever into the

Lo

Reverse

reverse gear position.

To

shift into Lo reverse; first shift into reverse, then move lever to the extreme left and forward into the lo reverse position (it may be necessary

to

feather clutch to move

lever into reverse.)

6

Seven

Speed

Models

T-955ALL and T0-955ALL Models

To shift

from

- shift thru

neutral

2nd.

1st

to:

Overdrive

T0-955ALL

the

5th

positions are reversed.

Shift

lo-lo

selector lever

to

"In"

position for lo-lo

and

lo-lo

reverse.

models

and

6th

speed

Reverse,

To

Reverse

Lo

and

Lo-Lo

shift into reverse, move the gear shift lever into the

reverse gear position. To

shift into Lo reverse: first shift into reverse, then move lever to the extreme left and forward into the Lo reverse position (it may be necessary to feather clutch to move lever into reverse.)

Lo

To shift into Lo-Lo reverse: first shift into switch the Lo-Lo selector from diately disengage and re-engage clutch. reverse to

Lo

reverse: switch selector from

"Out"

To

reverse, then

to

"In"

and imme-

shift from Lo-Lo

"In"

to

"Out"

and immediately disengage and re-engage clutch.

1.

Start engine with gear shift lever in the neutral position.

To

start vehicle moving under normal conditions, shift

2. is

into the 1st speed position. This

done by moving the gear shift lever through the 2nd speed gear position with the clutch disengaged (it may be necessary to feather clutch to

move

lever into 2nd.)

Move

lever through the 2nd speed gear position to the extreme left, then push lever forward into 1st gear.

NOTE: the neutral position between 2nd and 1st neutral position

3.

To

While

moving the lever into first

you

may feel

gears.

can

be used at stop lights, etc.

shift into Lo-Lo under adverse conditions: To shift into Lo-Lo the gear shift lever must be in the 1st speed gear position. "In"

and immediately disengage and re-engage clutch;

transmission will shift into Lo-Lo. To shift out switch selector from

Switch the Lo-Lo selector from

"In"

to

"Out"

and immediately

"Out"

of

disengage and re-engage clutch.

in

4. After vehicle has gained sufficient speed

1st gear, shift

lever to the 2nd speed position.

5.

Shift from 2nd to 3rd by moving lever from the extreme right in the second speed gear position into the 3rd speed gear position.

NOTE: A spring and plunger will move the lever to the extreme right

in

the 2nd speed

gear

position: when shifting from 1st to 2nd the.gear shift lever will be moved to the extreme right position; when shifting from 2nd to 1st, operator must move lever to the extreme left position while

in

2nd

gear

position against the spring

pressure.

6.

Shift on upward through pattern.

On overdrive models, the

4th,

5th

and 6th in the shift

5th

and 6th speed gear

positions are reversed.

This

to

Lo-Lo,

shift

NOTE: Reverse

gears

can

be shifted progressively without

stopping vehicle.

Alternative Method and

T0-955ALL

1.

As

in the previous instructions, start vehicle with gear

of

Upshifting the

Transmissions

T-955ALL

shift lever in neutral and shift into the Lo-Lo position, moving the selector switch to the

"In"

position.

2. After vehicle has gained sufficient momentum, shift upward through the shift pattern through 2nd, 3rd, and

5th

to 6th, KEEPING THE SELECTOR

TO

THE

"IN"

POSITION.

4th

SWITCH

3. When in 6th and ready for the next UPSHIFT, switch the

selector immediately move the gear shift lever gear position. Remember this

4. Continue upshifting through

NOTE:

When shift pattern with the selector switch to "JN") sary

to move the make the upshift. For instance, selector from 4th;

if

you

are

and move

gear

U pshift Gear Positions Using Alternative Method

switch from

is

5th

using this method

gear

shift lever two gear positions lower to

if

"IN"

to "OUT", and move

in

5th, switch selector from

shift lever to 3rd.

"IN"

to

"OUT" and

to

the

4th

an upshift. and 6th.

of

shifting (by using the

it

is

you

are

in

6th, switch

gear

shift lever to

"IN"

to "OUT"

speed

neces-

of

Shifting

6th 5th

6th

__

5th

_2!.--3rd

4th

4th 3rd

Shifted with selector to "OUT"

2nd Lo-Lo

t

Shifted

with Selector to

"IN"

7

To

Convert

From

T-955AL

To

T0-955AL,

To convert from an T-955AL or T-955ALL to

drive

model T0-955AL or T0-955ALL the fifth speed gear on the mainshaft and mating gears, one on each countershaft, are interchanged with the main drive gear and mating countershift drive gears.

The transmission front section must be completely

assembled to make the change

as

the drive gear on each

INTERCHANGE THESE TWO SETS OF GEARS.

or

T-955ALL

an

over-

dis-

(3 Gears

To

T0-955ALL

countershaft must be removed. When reassembling make

sure gear hubs are in the right position

detailed reassembly section

Extra parts, other than gaskets, are not needed to make

the conversion. A new drive gear bearing nut may be

needed

in

each set)

as

this part may be damaged during removal.

of

this manual.

as

described

in

the

FRONT SECTION OF T-955AL

8

AND

T-955ALL

Special

Procedure

For

Changing

In some cases in field repair it may be necessary to

place only the input shaft due to clutch wear on the splines.

In these instances the input shaft can be removed out disassembling the transmission other than removing the shifting bar housing. Removal tional. Following

is

the detailed procedure:

of

the clutch housing

Clutch

re-

with-

is

op-

Disassembly

1.

Remove gear shift lever housing and shift bar housing

from transmission.

2. Remove the front bearing cover.

3. Engage the mainshaft sliding clutches in two gears and

remove the drive gear bearing nut.

4.

Move

the drive gear assembly

and remove the drive gear bearing.

5. Remove the washer from input shaft.

6.

From the front, remove the snap ring from

gear.

7.

Pull the input shaft forward and from splines

gear.

as

far forward

as

ID

possible

of

drive

of

drive

(Input)

Shaft

Reassembly

1.

Install new input shaft into splines enough to expose snap ring groove in

of

2. Install snap ring in ID

3. Install washer on shaft.

IMPORTANT

4. contact end between rear speed gear. When installing bearing this will hold input shaft in position

5. Install drive gear bearing on shaft and into case bore, making sure blocking remains in place.

6. Remove blocking from mainshaft and install the drive gear

bearing nut, left-hand thread.

threads

7.

Peen nut into milled slots in shaft.

8. Re-install front bearing cover, shifting bar housing and gear shift lever housing.

NOTE: input shaft only. disassembly

-

Move

of

input shaft in hub

of

to

of

nut and shaft.

The above instructions

of

the front section must be

drive gear.

the sliding clutch gear forward to

sliding clutch and front

seat the bearing properly.

To

change the drive

of

drive gear just far

ID

of

drive gear.

of

drive gear. Block

of

Use

Loctite sealant on

are

for changing the

gear,

made.

the fifth

complete

9

Ei.!j1ffo.l,I

___________________________

_

Lubrication

RECOMMENDED LUBRICANTS

Heavy-duty engine oil. Make sure to specify heavyduty type meeting MIL-L-2104B specifications.

Mineral gear oil inhibited against rust, oxidation and

foaming.

Extreme pressure oils under some conditions might form carbon deposits on gears, shafts, bearings and synchronizer discs, and may also glaze friction faces

of

synchronizer discs - conditions which will result in transmission malfunction and premature failure. and E.P. oil mineral oil or heavy-duty engine oil

It

is

suggested that

is

being used, a change should be made to

if

these conditions exist,

as

recommended.

sur-

ON-HIGHWAY

Type

Heavy Duty Engine MIL-L-2104B

Mineral Gear Oil Rand

0 Type

Mild

E.P.

Oil Sulfur-chlorine-lead type) MIL-L-2105B

OFF-HIGHWAY

Heavy Duty Engine Oil MIL-L-2104B

Special Recommendation - For extreme cold weathe1 where temperature

Heavy Duty Engine Oil MIL-L-2104B

(except

is

Oil

AND

consistently below

VEHICLES

Grade Temperature

SAE 50 Above + 1 SAE

SAE90 SAE

MINING

SAE 50 SAE30

SAE

Below + 1 ooF.

30

Above +

80

Below + 1 Above + 1

80 Below + 1

EQUIPMENT

Above + 1 Below + 1

o°F.

20W

Below ooF.

o°F.

I0°F.

o°F.

FULLER TRANSMISSIONS ate in a bath parts have built-in channels where needed, to help lubricate bearings and shafts.

Thus, followed:

To keep the gear oil clean between oil changes use the Fuller Transmission Gear

Oil Filter which can be attached to the right-side power take-off opening. This assembly includes a replaceable filter element that removes the accumulation lubricant.

of

oil circulated by the motion

all

parts will be amply lubricated

1. Maintain oil level. Inspect regularly.

2.

Change

3.

Use

the correct

4. Buy from a reputable dealer.

of

metallic particles, road dirt and grit deposited in the

are designed

oil regularly.

grade

so

that the internal parts oper-

of

gears and shafts. Grey iron

if

these procedures are closely

and

type of oil.

10

Fuller

Transmission Gear

Oil

Filter

Draining Oil

Inspection

To

drain the transmission remove the drain plug at

the bottom

of

the front case. Drain oil when transmission

is warm. After the transmission has been drained and before it is

refilled, the clean flushing oil or kerosene. pound

if

pressure lubrication pumps unless pump

unit

case

should be thoroughly flushed with a

Do

not

use

flushing com-

is

equipped with side or front mounted

is

removed and opening covered with plate. Clean both drain plugs before reinstalling.

Refilling

In order to assure complete filling

of

the transmission

with oil, the following two methods may be used:

1)

At any inclination: Plug the fill hole in the front

case

and add entire quantity through opening in shift bar

housing. The transmission must be

completely drained

before using this method in order to avoid overfilling.

At

upgrade inclinations from 0 through 3 degrees:

2) Add sufficient quantities through the fill hole to level the oil at the

bottom

of

the fill hole.

Gear oil

opening at all times.

Highway

Off-highway Service

Gear Oil Change

Change the gear oil on

is

to be kept even with the level

Check at the following intervals:

Service

.....................

....................

all

new equipment after the first

of

the filler

.1,000 miles

.40 hours

3000 to 5000 miles (on-highway), or first 40 hours (off-

highway); thereafter, make oil changes

Highway Service

Off-highway

.....................

Service

Logging and associated operations

as

follows:

......

25

,000 miles

1,000 hours

Dirt moving, mining and

associated operations

............

250 to 500 hours, as indicated by operation and contamination lubricant.

of

Do

not overfill. Overfilling will cause the oil to be

forced out

Adding Oil

intermixed because

made through the fill hole

the fill hole with the transmission at a 0

of

the

case

through the mainshaft openings.

It

is

recommended that types and brands

of

possible incompatibility.

Additions

of

oil during servicing operations should be

to

level the oil at the

of

oil not be

bottom

to

3 degree

of

upgrade angle.

Operating Temperature

It

is

imperative that the operating temperature

transmission does not exceed

250°F.

Extensive operation at temperatures exceeding

will result in rapid breakdown

of

the oil and shorten trans-

of

the

250°F.

mission life.

Transmissions used in stationary equipment, or in

vehicles operating at slow road speeds, may have to be

so

equipped with external coolers ture

is

not exceeded.

that the

250°F.

tempera-

Special Recommendation

The above oil inspection and change periods are based on the average tions listed. make a periodic lab analysis contamination based on the individual's own operating

use

and operating conditions for the applica-

It

is

recommended that the individual owner

of

the lubricant to determine

conditions. After this has been determined, the individual owner can then set his own inspection and oil change periods.

Clutch Release Bearing

Follow

vehicle manufacturer's chassis lubrication

recommendations.

Oil Filter

If

so

equipped, replace filter element at each oil

change; clean filter element housing.

11

'i'fjij.iiijf

1

f

M

. l!IW'Sl!t?t''W'l''Sii.

------

12

Preventive

Maintenance

Check

Chart

Preventive

Maintenance

CHECKS WITHOUT PARTIAL

DISASSEMBLY OF

CHASSIS OR

1.

Air

System

a.

Check for leaks, worn air lines, loose connections and capscrews,

2. Clutch

a.

Check looseness.

all

3. Clutch

a.

Remove hand hole cover and check radial and axial clearances in release bearing.

b.

Check relative position ing

with thrust sleeve on push type clutches.

4.

Clutch

a. Pry upward on shafts to check wear.

If

excessive movement

b.

mechanism and check bushings in bores and wear on

shafts.

5.

Gear

a.

Change at specified service intervals.

b.

Use

only gear oils

tion.

6.

Filler

a.

Remove filler plug and check level fied intervals. Tighten filler and drain plugs securely.

and

Connections

See

Air Systems, page 94.

Housing

capscrews in bolt circle

Release

Pedal

Mounting

Bearing

of

Shaft

is

Lubricant

as

recommended.

and

Drain

Plugs

CAB

(T-955ALL)

of

clutch housing for

thrust surface

and

Bores

found, remove clutch release

of

release bear-

See

Lubrication

of

lubricant at speci-

sec-

Check

8.

Gear

Shift

a.

Remove the gear shift lever housing assembly from

transmission.

b.

Check tension spring and washer for set and wear.

c.

Check the gear shift lever pivot pin and pivot pin slot for

wear.

d.

Check

bottom

of

slot contact points with shift lever.

yokes and blocks in shift bar housing for wear

CHECKS WITH

Chart

Lever

Housing

end

of

gear shift lever for wear and check

Assembly

DRIVE

LINE

DROPPED

Universal

9.

a.

Check for tightness. Tighten

CHECKS WITH UNIVERSAL

Joint

Companion

to

recommended torque.

Flange

JOINT

Nut

COMPANION FLANGE REMOVED

10. Output Shaft

a.

Check splines for wear from movement and chucking action

of

the universal joint companion flange.

Pry upward against output shaft to check radial clear-

b.

ance in mainshaft rear bearing.

11. Mainshaft

a. Check oil seal for wear.

Rear

Bearing

Cover

at

7.

Gear

Shift

Lever

a.

Check for looseness and free play in housing.

loose in housing, proceed with Check No. 8.

If

lever

is

13

General

Precautions

IMPORTANT: Read this section before starting

the

detailed disassembly procedures

It

is

assumed in the detailed disassembly instructions that the lubricant has been drained from the transmission, the necessary linkage and air lines removed and the transmission has been removed from the chassis. Removal gear shift lever housing assembly instructions; however, this assembly must also be removed from transmission before removing unit from vehicle.

is

included in the detailed

of

the

for

Disassembly

ASSEMBLIES - When disassembling the various assem-

2. blies, such bar housing, lay sequence assembly and reduce the possibility oflosing parts.

as

the mainshaft, countershafts and shifting

all

parts on a clean bench in the same

as

removed. This procedure will simplify re-

The two control

the

transmission before removing unit from vehicle.

(T-955ALL)

Follow each procedure closely in each section, making

use

of

both

the text and pictures.

1.

BEARINGS - Carefully wash and relubricate

ings

as

removed and protectively wrap until ready for

use. Remove bearings with pullers designed for this

purpose.

REMOVED

CHISEL,

OUTER

BEARING

WITH

DAMAGED

RACE.

valve

air lines must be disconnected at

BEARING REMOVED WITH

DAMAGED

PUNCH, SHIELD.

all

bear-

oo

3. SNAP RINGS - Remove snap rings with pliers designed for this purpose. Rings removed in this manner can be reused.

INPUT SHAFT - The clutch or input shaft can be re-

4. moved without removing the countershafts, mainshaft drive gear.

5.

CLEANLINESS - Provide a clean place

important that no dirt or foreign material enters the unit

during repairs. The outside fully cleaned before starting the disassembly. Dirt abrasive and can damage bearings.

WHEN

6. etc., with restraint. Movement ed.

solidly. work.

DRIVING - Apply force to shafts, housings,

Do

not apply force after the part being driven stops

Use

soft hammers and bars for

of

the unit should be care-

of

some parts

to

work.

is

all

disassembly

or

It

restrict-

is

14

DISASSEMBLY

I.

Shifting

Gear

Shift

Lever

----

INSTRUCTIONS

Controls

Low

Gear

(T-955ALL

/Gear

Air

System

MODELS)

Shift

Lever

Bar

Housing

15

l·HfHH,,'MW

_________________

_

A. Removal of the Low Gear Shift

LowGearShift

Coo"ol

V•"'•--

~

u-

11

i i

•

Y."

l.D.

Air

\___

Lines IF'

Air

System

+·

Tee

. . I

(T-955ALL

Cap screw

(2)

Reducer Bushing

Fitting

-o-u-Rmn-

\

Models)

~

'

l u U-BoU

'--

- -

--

----

Filter

-Air

Bracket

Filter

-.

Y." I .D.

Air

Line

1.

Disconnect of

the

air line between

air filter and

the

low gear shift cylinder.

L~

G~'

tee

fitting forward

Shrr.

Cyllod"

~'\''

c~"~

Turn

out

2. bracket assembly. the

the

filter, refer

'icj

two

capscrews and remove

For

disassembly and maintenance

to

page 94.

the

air filter and

of

16

B.

Removal and Disassembly

of

the Gear

Shift

Lever Housing Assembly

ca

Tension Washer

~

';:;;,,;o"

Spd,_

2. Mount housing and using a large, heavy-bladed screwdriver, pry the one

3. Remove

pull

the

assembly in a vise, upside down,

tension spring coil

at

a time. Remove

the

tension spring washer

the

lever

up

and

up

and over

from

the

housing.

the

lugs

in

spring from

from

the

by

the

housing,

the

housing.

housing and

the

1.

Turn

out

the gasket seal and lift shift bar housing. remove

the

rubber

four

capscrews, jar lightly

the

gear shift lever housing from

Turn

the

shift hall from

dust

protector.

to

the

break

the the

lever and

4.

5. Remove

17

If

necessary, remove

the

housing.

the

0-ring

housing.

the

from

nut,

pivot pin and washer from

the

groove

in

the

top

of

the

C. Removal and Disassembly

--

Capscrews

- Tensions Spring Cover

of

the

Shift

Bar Housing Assembly

Plug

@

GasketO

'

00

1

/e

Reverse~

Light

Capscrew

(161

/

I

11

/ Tension Balls

I/

00

Tension Springs

@Plug

(41

Shift

/

Bar Housing

Gasket

1st

Low

Reverse Block,

Reverse

Shift

Bar

And

Yoke

2nd

Speed~~

Bar and

Yoke

3rd -4th

Bar and

Speed

Yoke

~/

'

~

18

Shift

Lockscrew

\

----~~

lunger

-Spring

\

--Plug

1.

Tum

out

the

tension spring cover.

two

retaining capscrews

and

remove

the

4.

If

necessary, remove

the

housing.

the

reverse light pin

and

plug

from

2. Remove

Use a magnet

3. under

the

halls

moved

the

by

from

four

tension springs.

to

remove

springs.

tipping

the

transmission.

the

If

a magnet is

the

housing

four

tension balls located

not

available, remove

after

it

has

been

re-

5.

6.

19

If

necessary, use pilers

breather.

Tum

out

the

16 gasket seal transmission.

and

or

vise-grips

retaining capscrews,

lift

the

shift

bar

to

remove

jar

to

housing

the

break from

air

the the

C.

Removal and Disassembly

of

the

Shift

Bar Housing Assembly - continued

NOTE: place all parts in their bench, placing each bar. Bars neutral position preventing removal.

7. Mount shift bar lockscrew and pull from sary, use a screwdriver the

In

the

shift

to

the

shift

spring and plunger from

following steps

order

the

correct shift yokes and blocks

not

being removed

or

interlock parts will lock

bar

housing in a vise with

top

and

the

short (5th-6th speed) shift bar

yoke

and web

to

for

of

rentoval

cut

all lockwires.

of

tum

out

the

shift yoke.

ease

of

on

must

he

the

housing.

the

plug and remove

reassembly,

a clean work-

on

kept

in

the

bars,

the

shortest

Tum

out

the

If

neces-

9. Turn

out shift bar from and block.

the

two

lockscrews and pull

the

web

of

the

housing and

the

2nd-reverse

the

shift

yoke

8. Turn bar from

clears

the

out

the

bar.

the

lockscrew and pull

the

yoke

and web

web

the

interlock pin will fall from

of

the

3rd-4th speed shift

the

housing.

As

the

bore

bar

in

10. Turn

11. Three interlock balls are located

out

the

two

lockscrews and pull verse shift bar from shift

yoke

and block.

housing. These will fall from bar

is

removed

web.

the

or

may have

web

20

of

the

to

the

in

web as

he

the

1st-low re-

housing and

the

web

of

the

last shift

removed from

the

12. Mount remove

13. Turn spring retaining plate.

the the

out

the

1st-low reverse shift block in a vise and

two

sets

of

lockwires.

two

lockscrews evenly and remove

the

15.

Turn

out

retaining plate.

16. Remove from each block.

the

two

lockscrews and remove

two

blocks and remove

the

interlock pin

block

14. Remove

the

two

springs

from

the

bores.

21

'·BiHi+"M

1

lli'NNh.iiH'·

1

·B+b'+'·m

1

•

iM.t.iiifiiiif

Biiii"+I..._

_________

_

II.

A. Removal

1.

If

so equipped, remove

sembly from

Clutch

of

the Clutch Housing

the

front

bearing cover.

Housing,

Auxiliary

upshift clutch brake as·

Companion

Section

Flange

and

2.

Turn

out

clutch housing

the

four

bolts and six

to

the

transmission.

nuts

which

attach

the

3. Use a rubber mallot and

off

the

front

bearing cover and studs.

to

tap the

clutch housing forward

22

B.

1.

Turn

C.

Removal

the

elastic stop

of

the Companion Flange

nut

from

the

of

the

Auxiliary

Rear Section

Disassembly

or

output

shaft.

Yoke

-

Clutch

2. Pull

Housing,

the

output

or

spacer

Companion

companion flange

shaft and remove

from

the

flange

or

Flange,

or

yoke

the

yoke.

Auxiliary

from

the

speedometer drive gear

splines

Section

of

1.

Turn

out

the

19

capscrews retaining

to

the

front

case.

NOTE: With T-955AL and GL series transmissions, may be necessary right corner the

top

right retaining capscrews.

2.

Insert

three

flange

of

break

the

from

the

front

imately

Y2".

the

to

remove

of

the

auxiliary section

puller screws

auxiliary section and tighten evenly

gasket seal

case. Move

and

in

move

the

auxiliary section

the

plate located

to

allow access

the

tapped holes in

the

rear section away

rear housing back approx·

at

the

it

top

to

the

to

3. Remove

23

the

top

the

rear housing

NOTE:

the

output

the

puller screws and

of

the

rear housing. Use a chain hoist

off

It

is

advisable

shaft

to

attach

the

front

case dowel pins.

to

re-install

avoid damage

a hanger bracket

the

elastic stop

to

the

threads.

to

move

nut

to

on

Ill.

Front

Section

A. Removal and Disassembly

Bearing Retaining Snap Ring

of

the

Auxiliary Drive Gear Assembly

Retaining

Snap Ring

Capscrew (6)

1. Cut retaining case.

the

two

lockwires and

the

auxiliary drive gear assembly

turn

out

the

six capscrews

to

the

front

24

2.

Remove mainshaft.

the

snap ring

from

the

groove

in

the

rear

of

the

3. Insert three puller screws retaining ring and tighten evenly to

the

rear and

4. Remove the

auxiliary drive gear.

from

the

snap ring from

the

case bore.

in

the

to

groove

tapped holes

move

the

on

the

of

the

assembly

front

of

5.

Support use a mall and driver the

the

assembly

hearing. This will free

in

to

a vise

drive

the

by

the

retaining ring and

the

gear

down

retaining ring.

and

from

25

B.

Removal

of

the

Left

Reverse

Idler Gear Assembly

Bearing

Needle Bearing \

\

Inner

Race

Rear Washer

1.

Remove

the

snap ring

mainshaft reverse gear.

2. Move against

the

reverse

sliding

the

reverse gear forward

the

1st speed gear, engaging

and

clutch

gear.

1st

speed gears

from

the

ID

on

with

of

the the

the

hub

mainshaft

splines

of

splines

of

the

and

both

the

3. Remove

26

the

elastic

the

idler shaft.

4.

Use inside jaw pullers tershaft auxiliary moved

front

countershaft

at

this

time.

stop

bearing

nut

to

from front

and

remove

the

bearing

washer

the

left

case

from

the

end

auxiliary coun-

bore.

The

may

also be re-

of

right

5. Remove an

insert and

thrust

idler shaft

the

plug from

impact puller

washer

to

in

the

rear and from

the

end

in

the

tapped

place inside

the

of

the

hole. Hold

the

case and pull

case.

idler shaft and

the

gear

the

7. Remove

the

idler rear washer

from

the

case.

6. Remove

the

gear and

thrust

washer from

the

cas".

8. Remove

27

the

hearing inner race from

necessary, press

the

hearing from

the

gear.

idler gear.

If

C. Removal

of

the Right Countershaft

Bearings

1. Remove

right countershaft.

the

snap ring

from

the

groove

in

the

rear

of

the

3. Cut move

sary

the

4.

Use a possible

the

lockwire,

the

front

to

lock

the

lockscrews.

soft

bar

to

the

tum

out

the

two

bearing retaining plate.

trnnsmission

and mall

rear.

to

drive

in

the

two

lockscrews and re-

It

may

be

neces-

speeds

countershaft

to

remove

as

far

as

2.

Use a mall and against to

NOTE: Removal generally result be planned.

the

rear and

attempted

punch

or

other

inner race

from

of

the

case

of

the

countershaft

in

damage

unless replacement

similar

pointed bearing bore

to

the

to

and countershaft.

bearings and should

of

instrument

drive

the

bearing

rear bearings will

not

the

bearings is

28

Use a

5. to unseat ing puller

soft

drive

bar

and mall

the

shaft as far forward as possible. This will

the

front

bearing

to

remove

the

on

the

from

bearing

rear

of

the

case bore. Use a bear-

from

the

countershaft

countershaft.

0.

Removal and Disassembly

Small Splined

Spacer

Small

Washe~

Small

Sliding

Clutch

\

~';"·~

/

Small Snap Ring

5th

Speed Gear

of

the

Mainshaft Assembly

4th

Speed Gear

Key

3rd

Speed Gear

\

Mainshaft

Large

2nd

Speed Gear

Sliding

\

Clutch

(2)

Large

Splined Spacer (4)

"'Large

Snap Ring (4)

Reverse Gear

1. Block

and the

front ward gears shaft. Use from

the

pull

and

on

the

right

countershaft

the

mainshaft as far

of

the

mainshaft

lift

the

mainshaft

the

mainshaft

caution

mainshaft.

as

against

up,

from

past

the

reverse gear is free and can fall

the

side

to

the

rear as possible. Tilt

move

the

case, working

the

gears

on

of

assembly for-

the

case

the

counter-

29

2. Place reverse gear.

the

mainshaft

on

a workbench and remove

the

D. Removal and Disassembly

of

the Mainshaft Assembly - continued

3. Remove of

the

mainshaft.

4. Remove clutch.

the

5th-6th speed sliding clutch from

the

key located

under

the

5th-6th speed sliding

the

front

6. Remove mainshaft.

7. Remove mainshaft.

the

5th

speed gear, spacer and washer from

4th

speed gear, spacer and washer from

the

5. Remove mainshaft.

the

snap ring from

the

groove

in

the

rear

of

the

30

8.

Pull

the

mainshaft.

3rd-4th speed sliding clutch from

the

splines

of

9. Use a pointed object shaft until

the

other

to

end

push

the

extends

key

beyond

down

the

main-

mainshaft.

10. Pull

11. Remove

the

mainshaft.

key from

the

keyway.

reverse gear washer and spacer from

the

12. Pull

13. Remove

the

splines

spacers from

reverse-2nd speed sliding clutch from

of

the

mainshaft.

the

second and third speed gears, washers and

the

mainshaft.

the

E.

Removal

1. See page 28 as removal procedures for tershaft bearings are identical.

of

the

Left

Countershaft Bearings

both

sets

of

coun-

31

F. Removal and Disassembly

Bearing

Nut

Bearing

of

the

Input

Shaft and Drive Gear Assembly

Brass Bushing

1. Turn

out

bearing cover.

the

retaining capscrews and remove

the

front

32

2.

From the soft necessary.

inside

the

snap ring can

bar and mall

case,

tap

be

removed from

to

move

the

drive gear forward so

the

drive gear forward if

that

bearing. Use a

3. Move

the

drive gear assembly working past drive gear assembly

to

the

inside

the

countershaft assemblies. Remove

from

the

case.

of

the

case,

the

5.

Turn

the

bearing

nut

from

the

shaft (left

hand

thread.)

4. Relieve

the

bearing

nut

where

it

is

peened

into

the

shaft.

Press

6.

sary, remove

Check

place if damaged.

33

the

shaft through

the

bushing

the

snap ring from

in

the

bearing and gear.

the

pocket

of

the

ID

input

of

If

neces-

the

gear.

shaft; re-

G. Removal and Disassembly

Bearing Retainer Plate

~JJ

Retainer Capscrews

of

the

Countershaft Assemblies

Key~

I

/i

Roll Pin

1

1. Remove

the

case.

NOTE:

gears,

the

assembled

the

right

Except

for

countershaft

in

the

same manner.

and

left

countershaft

the

number

assemblies are identical

of

assemblies

teeth

on

the

and

from

PTO

dis-

2. Press

the

6th,

PTO,

5th

and

4th countershaft. (This will require a press capacity; use metal shield as a safety precaution.)

34

speed gears

of

at

least 25-ton

from

the

IMPORTANT: Never use

the

pressing as

ceptible

larger diameter

to

breakage. ·

the

PTO gear as a base for

of

this gear makes

it

sus-

3. Press

H. Removal and Disassembly

1. Refer

the

3rd

speed gear from

remove

assemblies are identical and are disassembled

manner.

the

key and roll pin from

to

page

26

as

the

right and

the

of

the Right

left

shaft.

If

necessary,

shaft.

Reverse

reverse idler gear

in

the

same

Idler

Gear

Assembly

35

IV.

Auxiliary

Section

A.

Removal

of

T-955AL,

the

First-Reverse Speed Sliding Clutch Gear

T-955GL,

Models

1. Insert a large screwdriver between the

and and

2.

Remove shaft.

1st speed gear and

off

the

splines

the

tension hall from

of

the

pry

output

the

shaft.

the

sliding clutch gear

sliding

clutch

bore

in

the

forward

output

3.

Rotate

from

the

bore

output

in

the

shaft until

shaft.

the

tension spring falls

36

B. Removal

Front

of

the Auxiliary Countershaft Assemblies

Bearing

3. Remove countershaft.

the

snap ring

from

the

rear

of

each auxiliary

1.

If

not

previously removed,

screws and remove

2.

Tum

out

the

covers.

tum

out

the

rear cover.

capscrews and remove

the

retaining cap·

the

two

rear bearing

4.

5.

37

Use a soft ward

the

bearing inner race

and

bar

from

Use a soft bar the

housing bores. Tap

age

to

the

bearings.

and mall

the

rear bearings.

from

to

tap the

to

the

bearings

on

the

drive

front

outer

the

countershafts for·

If

necessary, remove

of

each shaft.

to

the

rear and from

race

to

avoid dam·

C.

Removal

of

the

First Speed Gear,

Output

Shaft and Rear Bearing Assembly

First,

Low

Reverse Speed

Sliding

Clutch

. Bearing

~

Capscrew

./"....

/

"-...~···

(191

~

~~:::1-'\~·V

~·_G·

Oil

..

Seal

~pscrew(6)

I Plug Bushing

Plug

Gasket

Rear Bearing Housing

C~.~~~.

·.

(\

C~ew

.

·:

.

....

,

...

·/

j

..

·

Gasket

(4)

~

Stop

Nut

~·

\

Stepped

Spacer

First

Speed Gear

1.

Tum

out hearing housing. the

housing.

the

six retaining capscrews

If

necessary, remove

-,_Q

Tension Spring Tension Ball

and

remove

the

oil seal

rear

from

NOTE: removal of

the

2. Use a and

The

oil seal will

and

should

seal is planned.

soft

bar

and

from

the

rear bearing assembly.

not

mall

most

likely

he

damaged during

he

removed unless replacement

to

drive

the

output

shaft

forward

38

3. Remove

the

rear bearing

cone

from

the

rear housing.

5. Place inner spacer.

the

output

shaft

on

end and remove

the

hearing

4.

Use a

spacer

soft

from

bar

the

to

tap the

bore

in

the

two

bearing cups

rear housing.

and

outer

6. Using

the

first speed gear as a base, press ing cone ing, gear, washer and spacer.

from

39

the

output

the

shaft. This will free

front

the

hearhear-

V.

Auxiliary

Section

A. Removal

of

the Auxiliary Countershafts

T-955ALL,

Models

1.

Mount tion,

turn

two

rear hearing covers.

Remove

2. countershaft.

the

auxiliary

out

the

snap

section

attaching

ring

in

a vise

in

the

upright

capscrews and remove

from

the

rear

of

posi-

the

each

3. Use a soft ward the

4.

Use a the the

40

bar

and

from

hearing

case bores. hearings.

soft

inner

bar

and

mall

the

rear hearings.

race

from

to

tap the

Tap

on

to

hearings

the

drive

the

outer

the

countershafts

If

necessary, remove

front

of

each shaft.

to

the

race

to

avoid damage

rear

and

for-

from

to

Disassembly

-

Auxiliary

Section

B. Removal

Sliding

\

~-----~

_

Jl!f!!!}I

Clutch

of

the Sliding Clutch and First

Ke$-·

First

Speed Gear

Speed

Gear

4.

Turn the gear.

the

splined washer inside

teeth

align with

the

1st

speed gear until

the

grooves in mainshaft, freeing

the

1. Pry

the

sliding clutch forward and

range mainshaft.

2.

Rotate plunger falls from

the

mainshaft until

the

bore

off

the

~plines

the

sliding clutch retaining

in

the

shaft.

of

the

5.

Pull

the

6. Remove

1st speed gear from

the

coupler

from

the

splines

of

the

mainshaft.

the

mainshaft.

3. Remove

the

key from

the

groove

in

the

mainshaft.

41

C. Removal and Disassembly of the Low Gear Shift Cylinder

Shift

Cylinder

Yoke

\

Housing

\ /

""'

~\

~

V.

Gasket

-~

\

Lock

screw

HousingO-Ring

Shift

Bar

\

Co~~

~fl

~f

\ Gasket

Shift

Bar

0-Ring

sh;ft

cvo;"'"

c~"

1. Cut

the

lockwire and

gear shift yoke.

turn

out

the

lockscrew

on

the

low

42

2. Turn

out

the

capscrews and remove

the

cylinder cover.

3.

Pull

the

ing.

If

necessary, remove

diameter

4. Remove

If

necessary, remove

housing.

shift

bar

to

the

rear and from

of

the

bar.

the

cylinder housing from

the

0-ring

the

0-ring from

the

cylinder hous-

from

the

large

auxiliary housing.

the

bore

in

the

5. Remove

the

shift

yoke

from

the

sliding clutch.

43

D. Removal

of

the

Range

Mainshaft

Tension Pin

Tension Spring

Bearing-~-©'~

-G-·~

au;u

S"•P

~~""

-~-

>

~

R;og

\

Range Mainshaft

Low

Speed Gear

\ Stepped

"'--

Output

Spacer

Stop

Shaft

Nut

1. Remove quill.

2.

Use pry bars

ward and

the

snap ring from

or

equivalent

off

the

quill.

the

to

front

move

of

the

output

the

mainshaft for-

shaft

3. Remove if necessary, remove tension spring from

44

the

hearing from

the

bore

of

the

brass hushing, snap ring and

the

mainshaft.

mainshaft and,

E.

Removal

of

the

Low Speed Gear,

Output

Disassembly

Shaft and Rear Bearing Assembly

-

Auxiliary

Section

1. Remove shaft.

2.

Use a soft bar and mall and from

the

sliding clutch from

the

rear bearing assembly.

to

drive

the

splines

output

of

the

output

shaft forward

4. Using

5.

the

low speed gear as a base, press

ing

cone

from

the

output

ing, gear, washer and spacer.

Turn

out

the

retaining capscrews and remove

bearing housing from

the

remove bearing cone from

NOTE: Removal procedures will oil seal and should of

the

oil seal from

seal is planned.

the

rear housing.

not

be

.

......

the

shaft. This will free

auxiliary section.

the

housing. Remove

most

likely damage

attempted

unless replacement

front

the

If

necessary,

the

bear-

rear

the

3. Remove

the

bearing inner spacer from

the

output

shaft.

45

6.

Use a soft

spacer from

bar

to

tap the

the

auxiliary housing bore.

two

bearing cups and

outer

"++'ii".!.I

......

_________________________

Inspection

Before reassembling the transmission, the individual parts should be carefully checked to eliminate those damaged from previous service. This inspection procedure should be carefully followed rebuilt unit.

The cost questionable part make additional repairs necessary before the next regularly scheduled overhaul.

Recommended inspection procedures are set forth in the following check list:

A.

Bearings

l.

Wash

all

bearings in clean solvent. Check balls, rolls and races for pits and spalled areas. Replace bearings which are

pitted or spalled.

2. Lubricate bearings which are not spalled or pitted and check for axial and radial clearances. Replace bearings clearances.

of

a new part

with excessive

is

generally a small fraction

Spalled Bearing Extreme

Load

of

the total cost

D. Thrust

1.

Check thrust scored or reduced in thickness should be replaced.

E.

Reverse

1.

Check bearing sleeve for wear from action bearings.

F. Gray Iron

to

Washers

surfaces

washers.

Gear

insure the maximum

of

downtime and labor, should the

of

all

Washers

and

Shaft

Parts

of

wear life from the

of

use

roller

of

_

a

Check fits

3.

case turn freely in the bores, the replaced.

B.

Gears

1.

c«eck faces. Gears with pitted teeth should be replaced.

Check all engaging gear teeth. Gears with teeth worn,

2. tapered or reduced in length from clashing in shifting should be replaced.

3.

Check axial clearances ance gear hub for excessive wear.

C.

Splines

1.

Check splines on gears, companion flange or clutch hub have worn into the sides

should be replaced.

of

bearings in

bores.

If

outer races

case

is

should

operating gear teeth for pitting on the

found, check gear snap ring, washer, spacer and

of

the splines, the shafts in this condition

be

o(

gears. Where excessive clear-

all

shafts for wear.

False Brinnelling -

Vibration Without

Rotation

If

sliding clutch

tooth

1.

Check

all

gray iron parts for cracks and breaks. Replace or repair parts found to be damaged. Heavy castings

may be welded or brazed providing the cracks do not extend into bearing bores or bolting surfaces.

G. Clutch

1.

Check clutch release parts. Replace yokes worn at cam surfaces and bearing carrier worn at contact pads.

2.

Check pedal shafts. Re-

place those worn at bear-

ing surfaces.

Release

Parts

46

H. Shifting Bar Housing Assembly

J.

Bearing

Covers

1.

Check yokes and blocks for wear at pads and lever slot.

Replace worn parts.

2.

Check ment. which are sprung.

3.

Check yokes for excessive

wear; replace worn yokes.

4.

Check lockscrews in yokes and blocks. Tighten and rewire those found loose.

5.

If

shifting bars for wear from interlock balls. at points adjacent to the neutral notch should be replaced.

yokes for align-

Straighten those

housing has been dismantled, check neutral notches

Bars

indented

of

1. Check covers for wear from thrust Replace covers worn and grooved from thrust outer race.

2.

Check bores oversize.

Oil Return Threads

K.

1.

Check oil return threads in front bearing cover. action input shaft, replace the cover.

2.

Check oil seal in mainshaft rear bearing cover.

action

L.

Sliding Clutches

1.

Check extreme wear or discoloration from heat.

of

covers for wear. Replace those worn

of

threads has been destroyed

of

lip has been destroyed, replace seal.

all

yokes and yoke slots in sliding clutches for

I. Gear Shift Lever Housing Assembly

2.

Check engaging teeth

1. Check spring tension on shift lever. Replace tension engagement pattern.

spring and washer

2.

If

housing sponding slot in lever for wear. Replace worn.

if

lever moves too freely.

is

dismantled, check pivot pin and corre-

both

parts

if

M.

Front Bearing Cover

1.

Check inside hub by backing

off

of

drive gear bearing nut.

of

adjacent bearing.

of

and

Seals

If

by

contact with

If

of

sliding clutches for partial

of

front bearing cover for wear caused

bearing

sealing

Location

Seat gasket with shellac on part to be installed.

gaskets

Gaskets are located between the following parts:

T-955AL,

l.

2.

3. Reverse light plug.

4. Tension spring cover plate.

5.

6. Front bearing cover and case.

7. Rear plate and case.

throughout

GL

Gear Shift lever housing and shift bar housing. Shift bar housing and case.

Clutch housing and case.

when reassembling transmission.

Use

new

of

Gaskets

8. Mainshaft rear bearing cover and rear plate.

9. Rear plate cover and rear plate.

10. Right aux. countershaft rear bearing cover and rear plate.

Left aux. countershaft rear bearing cover and rear

11. plate.

12. Large

13.

T-955ALL

To

1.

2. Low gear shift cylinder and case.

47

PTO cover and case.

Small PTO cover and case.

the above list add:

Low gear shift cylinder cover and cylinder.

Torque

Ratings

Recommended torque ratings, location and thread sizes

Capscrew lengths are given for reference purposes

Correct torque application

is

extremely important to assure long transmission life and dependable

as

a guide for installation at proper locations.

of

capscrews and nuts are listed below.

performance. Over-tightening or under-tightening can result in a loose installation and, in many

instances, eventually cause damage

to

transmission gears, shafts or bearings.

Do

not torque capscrews

dry.

CAPSCREWS

Thread

Location

Filter Bracket 2

*PTO Cover, small 6

Low Gear

Aux. Drive Gear Retainer Ring 6

Shift Bar Housing

Gear

Front Bearing Cover 6 Countershaft Rear Bearing Covers 8 Rear Plate

Rear Plate to Case (T-955ALL only) 18

Mainshaft Rear Bearing Cover 6 PTO Cover, large 8 Outch

C/S

Shift Cylinder

(T-955ALL only)

Shift Lever Housing

to

Case (T-955AL, GL only) 18

Housing to Case

Front

Bearing Retainers

Qty.

16

Size

And

Length

3/8-16 x 3/4

4 5/16-18 x 1-7/8

3/8-16 x 1 3/8-16 x 1-1/4

4 3/8-16 x 1-1/4

3/8-16 x 1-1/4 3/8-16 x 1-1/4 3/8-16x2

1

2 2 1/2-13 x 3-1/2

4

3/8-16 x 1-3/4 3/8-16 x 1-1/2 3/8-16x2 3/8-16 x 2-3/4

7/16-14 x 1-1/4

1/2-13 x 1-1/2

1/2-20 x 1 50-65

Torque

Rating

Foot-Pounds

20-25 18-23

(12-15 with oil filter)

20-25

35-45

50-65 70-75

70-75

*NOTE: away from

Reverse Idler Shafts Outch Drive Gear Companion Flange

Installing

the

case with resultant oil leakage.

Housing

to

the

capscrews with more than 23 ft-lbs.

of

torque will force the corners

NUTS

Qty.

2

Case 6 5/8-18

1 2-1/8-16

or

Yoke 1

Thread

5/8-18

2-16

48

Size

of

the

Torque

Foot-Pounds

75-80

170-185 250-300 450-500

PTO cover

Rating

General

Precautions

for

Reassembly

Make

sure that interiors

It

is

important that dirt be kept out reassembly. Dirt faces

of

bearings and washers.

listed below, during reassembly.

1.

GASKETS

sion

as

3.

0-RINGS - Lubricate

200 Fluid," 50,000

2.

CAPSCREWS

all

capscrews.

torque.

is

abrasive and can damage polished sur-

-

Use

it

is

being rebuilt. Make sure all gaskets are in-

- To prevent oil leakage,

See

of

new gaskets throughout the transmis-

stalled, can result in oil leakage or misalignment covers. kets" heading.

all

cs.

torque rating chart for recommended

IMPORTANT:

the

case

and housings are clean.

of

transmission during

Use

certain precautions,

as

omission

See

"Location

0-rings with "Dow Corning

use

Read this section before starting

detailed reassembly procedures.

as

of

gasket

of

bearing

of

Gas-

shellac on

7.

BEARINGS

commended for the installation

8.

UNIVERSAL

companion flange tightly into place with the mainshaft nut, using speedometer gear the same width must be used. Failure to pull the yoke or

flange tightly into place will permit the shaft to move

axially with resultant damage to rear bearing.

-

Use

of

flanged-end bearing drivers

drivers apply equal force to

both

venting damage to balls and races and maintaining correct

......

bearing alignment with shaft

and bore. type driver force only to inner race.

JOINT

450-500 foot-pounds

COMPANION

is

not used, a replacement spacer

of

bearings. These

races

of

bearing, pre-

If

tubular or sleeve

is

used, apply

FLANGE

of

torque. Make sure the

- Pull the

is

re-

of

4.

ASSEMBLY

guide to reassembly.

INITIAL

5. splines provide initial lubrication, preventing scoring and galling.

6.

AXIAL

ances

.012''. Mainshaft reverse gear clearance

.038". Refer to axial clearance chart on

reassembly

- Refer to the disassembly illustrations

LUBRICATION

of

shafts with Lubriplate during installation to

CLEARANCES

of

mainshaft forward speed gears

of

the mainshaft assembly.

- Coat all thrust washers and

- Maintain original axial clear-

of

is

page

.005" to

.005"

95 during

as

a

to

49

REASSEMBLY

I.

Auxiliary

INSTRUCTIONS

Section

A.

Reassembly

of

the

Low Speed Gear and

T-955ALL,

Output

Shaft

Models

l.

Place

the

output prevent damage washer

on

shaft, threaded end up,

to

the

shaft, stepped side

quill and install

up.

on

blocking

the

to

splined

50

2.

If

previously removed, install

of

the

low speed gear and install

clutching

teeth

down.

the

snap ring

the

gear

in on

the

groove

shaft,

Reassembly

-Auxiliary

Section

(T-955ALL)

3. Install

the

rear washer

on

the

shaft, flat side

up.

NOTE: Heating

Do

not

heat

5.

Install

the

of

the

hearing will facilitate installation.

the

hearing over 275°F.

spacer

on

the

shaft.

4. Install up.

the

front

hearing cone

on

the

shaft,

taper

facing

51

B.

Installation

of

the

Rear Bearing Assembly

1. Place

the

rear housing, machined face down, bench and using a rubber mallot front

bearing cup into

ed

end

of

the

cup should face down.

the

on

a work-

or

equivalent,

rear housing bore. The taper-

tap

the

3. Place

the

driver bore. The lip housing.

rear bearing cup

to

tap

all

three

of

the

on

the

inner race and use a

evenly

rear cup will seat against

into

position

in

the

case

rear

2.

Place

the

bearing

outer

race

on

the

front

cup.

52

4.

Place speed gear

the

output

shaft

to

prevent damage

on

blocking supported

to

the

quill.

by

the

low

5. Place

the

rear housing over

the

output

shaft.

7.

If

previously removed, install bearing housing, with inside

of

the

housing.

the

oil seal

side with

the

in

seam

the

to

rear

the

6. Install

the

bearing cup. NOTE: Heating

Do

not

heat

rear bearing cone

of

the

bearing will facilitate installation.

the

bearing over

on

the

275°F.

shaft and

in

the

rear

8. Install The capscrew with hole which intersects

53

the

rear bearing housing

the

on

the

auxiliary housing.

brass bushing is installed

speedometer drive bore.

in

the

C.

Reassembly and Installation

of

the

Low

Gear

Shift

Cylinder Assembly

1. Install

the

sliding clutch

on

the

output

shaft.

3. Install

the

shift cylinder housing iliary housing with previously removed, install cylinder housing.

the

in

the

small air channel

the

0-ring

in

bore

to the

of

the

bore

the

right.

of

aux-

If

the

2.

Install

the

hub

the

to

shift

the

yoke

front.

in

the

sliding clutch groove with

4.

If

previously removed, install

meter

of housing, making sure through shift

54

the

shift

yoke

bar

and insert

hub.

that

the

0-ring

bar

front

into

of

in

the

bar

large dia-

cylinder

passes

5. Align the and

the

hole

in

shift

yoke-and

wire securely.

the

shift

install

bar

the

with

the

capscrew bore in

yoke

lockscrew; tighten

6. Install the

air channel with

Secure with

the

shift cylinder cover

the

four

capscrews.

on

channel in

the

housing, aligning

the

cylinder housing.

55

D.

Installation

of

the

Range Mainshaft and First Speed Gear

1.

Install hearing in

moved: install snap ring

groove); install tension spring inside shaft, aligning hole in spring with bore in shaft; install brass bushing bore (see insert).

2.

Tap

the

mainshaft evenly

with

the

hearing

to

front

the

of

on

front.

mainshaft.

on

OD

to

the

If

previously re-

of

mainshaft (rear

output

shaft quill

in

shaft

4. Install the

rear.

5. Install the

rear.

the

coupler

the

first speed gear

on

the

mainshaft, clutching

on

the

shaft, machined face

teeth

to

3. Install

the

snap ring

on

the

front

of

the

quill.

56

6. Install the

gear.

the

splined washer

on

the

shaft and in

the

huh

of

7.

Turn the

the

splined washer in

gear

on

the

shaft.

the

huh

of

the

gear

to

lock

9. Hold

the

clutch retainer

key

in

position,

in

the

bore

rotate in

the

shaft and insert

shaft.

the

8. Install locked

the

under

key in

the

tooth

the

mainshaft keyway with

on

the

gear.

the

tab

10. Install

57

the

sliding clutch

on

the

shaft.

E.

Timing and Installation

of

the

Auxiliary Countershafts

1. Mark

2. Mark

any

mark

the

the shaft. This removed, front

of

gear (see insert).

two

teeth

on

two

teeth

directly opposite.

tooth

on

the

first speed gear

tooth

is

stamped

heat

and install

each countershaft

the

first speed gear and

of

with

an

"O".

the

bearing inner race

with

the

shoulder towards

then

each counter·

If

previously

on

the the

3. Use a bearing driver rear bearings in

4. Align

the

two

use a

soft rear bearings. Drive against the

rear bearing alternately until

exposed

marked

sets

bar

on

the

rear case bores.

tooth

of

marked

and

mall

rear

of

to

install

on

teeth

to

seat

each shaft.

the

auxiliary countershaft

each

countershaft

on

the

first speed gear and

the

countershafts in

the

front

of

each shaft and

the

snap ring groove is

between

the

58

5. Install

the

snap ring

on

the

rear

of

each shaft. 6. Install

the

two

rear hearing covers.

59

---------------

A. Reassembly

of

the First Speed

11.

Auxiliary

T-955AL,

Gear

and

Section

GL

Models

Output Shaft Assembly

1. Place ed end

2.

Place splines

the

output

up

and install

the

first speed gear

of

the

gear with

shaft

the

on

a workbench with

splined washer

on

the

shaft, engaging

the

splines

of

the

on

the

washer.

the

shaft.

thread-

the

3. Place

4. Install

the

NOTE: Heating

not

Do

stepped spacer

front

bearing cone

of

heat

the

bearing over

on

the

shaft, flat side up.

on

the

shaft,

taper

the

bearing will facilitate installation.

275°F.

up.

60

5. Install

the

bearing inner race

on

the

output

shaft.

61

B.

Installation

of

the

Output

Shaft

and Rear Bearing Assembly

1. Install

the wide diameter mallot.

front

bearing cup in

up,

by

tapping

the

rear housing bore,

with a soft

bar

or

rubber

3. Place

the

bearing rear cup three evenly rear cup seats against

into

the

housing until

the

rear housing.

on

the

outer

the

race and

shoulder

tap

of

all

the

2.

Place soft

the

bar

bearing

or

outer

race

rubber mallot

to

on

tap

the

both

front

cup and use a

into

the

housing.

62

4.

Secure place

the

output

the

rear housing over

shaft, threaded end

the

shaft.

up,

in

a vise

and

5. Install

the

cup with

NOTE: Heating Do

not

heat

rear hearing cone

the

taper

facing down.

of

the

hearing will facilitate installation.

the

hettring over

on

the

275°F.

shaft and in

the

rear

6.

If

previously removed, install

hearing housing and install

the

section with

the

with intersects

brass washer should

the

six retaining capscrews. The capscrew

speedometer drive bore.

the

housing

he

used

oil seal

on

in

the

in

the

auxiliary

hole which

rear

63

C.

Timing

and

Installation

of

the

Auxiliary

--------------

Countershaft Assemblies

1. Mark

2. Mark

any

two

adjacent

then

mark

the

two

the

tooth

on

countershaft which is stamped with an

viously removed, on

the

front

of

(see insert).

teeth

on

the

teeth

directly opposite.

the

first speed gear

heat

and

install

the

each shaft, shoulder towards

first speed gear and

on

each auxiliary

"O".

If

pre·

bearing inner race

the

gear

3. Use a bearing driver rear bearings

4. Mesh between and use a start

the against snap ring groove posed. Repeat procedure

the

in

marked

two

soft

shaft

bearing

of

the

bar

into

on

to

install

the

auxiliary countershaft

case bores.

tooth

on

one

of

the

marked

and

the

and

teeth

on

the

first speed gear

mall

on

the

front

of

rear bearing. Continue driving

the

front

of

the

shaft until

the

rear

of

the

countershaft is ex-

for

the

other

countershaft.

countershafts

the

shaft

to

the

64

5. Install

D.

Installation

the

snap ring

of

in

the

rear

of

each shaft.

the

First-Reverse Speed Sliding Clutch

6. Install

the

two

rear hearing covers.

1. Install

2.

Install

the

spring in

the

tension hall over

the

bore

in

the

output

spring.

shaft.

Use a screwdriver

3. the

65

sliding clutch

to

on

hold

the

tension hall

shaft and over

the

down

hall.

and slide

A.

Reassembly and Installation

Ill.

of

the

Front

Section

Right Reverse Idler Gear Assembly

NOTE: Before starting reassembly, check that

all

three

magnetic discs are in place

of

the

case. These can

adhesive, No. EC1300.

be

installed with "3M

to

make sure

on

the

bottom

Brand"

3. Install

the

bearing inner race

in

the

needle bearing.

1. Install

2.

the

plug

in

If

previously removed, press

bore

of

the

gear.

the

end

of

the

reverse idler shaft.

the

needle bearing in

the

66

4. Hold the

the

rear washer in place

idler shaft

into

the

washer.

in

the

case bore and insert

7. Install reverse idler bore.

the

auxiliary countershaft

front

bearing in

the

5. Install shaft

6. Install

shaft.

the

is

inserted

the

gear and

into

the

elastic stop

thrust

case bore.

nut

washer

and washer

on

the

on

shaft as

the

end

of

the

67

B.

Reassembly and Positioning of the Countershaft Assemblies

NOTE: Except for

gears,

the

two

countershafts are identical and assembled

in

the

same manner.

the

number

of

teeth

on

the

PTO

3.

Press

the

4th

speed gear

on

the

shaft, long

huh

up.

1.

If

previously removed, install

each shaft.

2.

Press

the

3rd speed gear

on

the

roll pin and key

the

shaft, long

huh

in

down.

4.

Press

the

5th

speed gear

on

the

shaft, long

hub

down.

68

5. Press facing up.

the

PTO gear

on

the

shaft, bullet nose

of

teeth

7. Mark The an

"O".

the

timing

tooth

is aligned with

tooth

on

each countershaft drive gear.

the

keyway and stamped with

6.

Press

the

6th

speed gear

on

the

shaft, long

huh

up.

8. Place into tooth.PTO gear)

69

the

left

position

countershaft assembly (47-tooth PTO gear)

in

the

case and

into

position. Do

then

not

place

the

right (45-

install bearings.

C.

Reassembly and Installation

1.

Install

the

snap ring

in

the

ID

of

the

drive gear.

Drive Gear Assembly

3. Install

the

spacer

on

the

shaft and against

the

snap ring.

2.

Install

the

snap ring towards

drive gear

the

on

front.

the

splines

of

the

input

shaft,

70

4. Install Note

the

drive gear bearing

that

the

bearing snap ring has been removed.

on

the

shaft; a press fit.

5. Apply Loctite, grade A VV, gear

nut.

The threads

grease.

must

he

to

dry

the

threads

and free from

of

the

dirt

drive

and

7. Peen

the

nut

into

the

two

slots

of

the

shaft.

6. Install shaft. Use 250-300 ft.-lhs.

the

drive gear

nut

on

of

torque.

the

threads

of

the

input

8. Mark any the the

NOTE: into hushing, drill between hushing and pilot

.040-.045.

71

two

teeth

hushing

is

If

hushing is

shaft pocket.

adjacent directly opposite. Check in

place and in good condition.

out

If

with

teeth

on

the

drive gear and

to

he

replaced, press hushing flush

the

three

oil holes are restricted

5/32"

drill. Radial clearance

on

mainshaft should he

to

make sure

mark

that

by

C.

Reassembly and Installation

-------------------

of

the

Drive Gear Assembly - continued

9. Insert

the case, working to

seat

the

input

shaft through

the

drive gear past

bearing in

the

front

the

bore

the

countershaft gears

bore.

from

inside

the

10. Install

the

snap ring in

the

groove

in

the

bearing.

72

Reassembly

-

Front

Section

D. Timing and Final Installation

1. Center

If

or

the

rear

of

the

a centering block is

equivalent.

left countershaft not

available, use wooden blocks

of

the

in

Left

Countershaft Assembly

the

case bore.

4. Remove shaft and

the

block and install

in

the

case bore.

the

rear bearing

on

the

2.

Mesh

the

marked

tween

two

of

3.

Use a bearing driver

shaft and

in

the

tooth

the

marked

case bore.

to

on

teeth

install

the

countershaft gear be·

on

the

drive gear.

the

front

bearing

on

the

5. Install shaft; tighten and wire securely.

6. Install countershaft.

bearing retainer plate

the

snap ring

73

in

the

on

groove

at

the

front

rear

of

the

E.

Reassembly and Installation

of

the

Mainshaft Assembly

1. Secure

the down. Make sure keyway.

mainshaft in a vise with

that

the

roll pin is in place in

the

pilot (front) end

the

NOTE: Unless otherwise specified, each washer should be installed the

shaft from

3. Turn

the

keyway and install

the

washer

keyway.

on

the

shaft until a

key in

on

the

large notch

the

opposite side

notch

keyway.

on

of

aligns with

2.

Install

flat side up.

the

3rd speed gear splined washer

on

the

shaft,

74

4. Install the

washer.

the

splined spacer

on

the

shaft, flat side against

5. Install

the

3rd

down and engaging

speed gear

the

splines

on

the

shaft, clutching

of

the

spacer.

teeth

7.

Install

the

hub

the

of

2nd

speed splined spacer

the

gear with

the

on

flat side up.

the

shaft and

in

6.

Place teeth

the

2nd speed gear

up.

on

the

3rd

speed gear, clutching

8. Remove

75

in the

the

hub

keyway.

key and install

of

the

gear and

the

washer, flat side down,

turn

until a

notch

aligns with

E.

Reassembly and Installation

-------------------

of

the

Mainshaft Assembly - continued

9. Install

the

key

in

the

keyway.

11. Remove washer

the

key and install

on

the

shaft, flat side

the

reverse gear splined

up.

10. Install with

the

2nd-reverse speed sliding clutch

the

large

notch

over

the

keyway.

on

the

shaft

76

12. Turn the

the

washer

keyway and reinstall

on

the

shaft until a the

key.

notch

aligns with

13. Install flat side down.

the

spacer

on

the

shaft and against

the

washer,

15. Remove vise with speed sliding clutch over

the

keyway.

assembly

pilot (front)

on

from

the

vise and reinstall

end

up. Install

shaft with

the

the large

in

the

3rd-4th

notch

14. Install behind

the

snap ring in

the

end

of

the

key.

the

groove

in

the

mainshaft

16. Install

77

the

4th

speed gear washer

notch

fitting over

of

the

shaft. The flat side should face up.

the

key and resting

on

the

shaft with

on

the

one

shoulder

E.

Reassembly and Installation

of

the

Mainshaft Assembly -

continued

17. Install

the

spacer

on

the

shaft, flat side down.

19. Place ing

the

teeth

5th

up.

speed gear

on

the

4th

speed gear, clutch-

Place

18.

the

down and engaging

4th

speed gear

the

on

splines

the

shaft, clutching

of

the

spacer.

teeth

78

20. Install hub

of

the

spacer, flat side

the

5th

speed gear.

up,

on

the

shaft and in

the

21. Install gear with

the

washer

the

flat side down.

on

the

shaft and

in

the

hub

of

the

23. Install with

the

5th-6th speed sliding clutch

the

large

notch

over

the

key.

on

the

shaft

22. Align and install washer

the

notch

large

the

and

notch

of

key, fitting

the

pin in

the

washer with

the

hole in

tapered

the

keyway

end

in

keyway.

the

24. Remove

79

the

assembly from verse speed gear forward and engaging Engage reverse and second speed gears are as close together as possible.

the

on

clutch

the

in

the

vise and install

shaft with

the

splines

the

of

2nd speed gear so

the

clutching

the

sliding clutch.

the

that

re-

teeth

the

E.

Reassembly and Installation

of

the

Mainshaft Assembly - continued

25. From inside through into

can fall from

the

position. Use caution as

the

case, insert

rear bearing bore and lower

the

mainshaft.

the

rear

the

reverse gear

of

the

mainshaft

the

is

assembly

free and

26. Move end

the

mainshaft assembly forward

of

the

shaft

in

the

bushing in

the

to

input

seat

shaft.

the

pilot

80

F. Timing and Installation

of

the Right Countershaft Assembly

1.

Mesh

the

timing

the

two

timing

the

left countershaft timing

tween

the

other

2.

Center

in

MAINSHAFT

the

rear

the

case bores. ACCURATE CENTERING OF THE

tooth

on

the

right countershaft between

teeth

on

the

drive gear, making sure

two

drive gear timing teeth.

of

both

the

mainshaft and countershaft

IS IMPORTANT.

tooth

is still meshed be-

that

4. Install

5. Install

the

and wire securely.

rear bearing

bearing retainer plate

on

the

shaft and in

on

the

front

case bore.

of

the

shaft

3. Install case bore.

the

front

bearing

on

the

countershaft and

in

the

6. Install

81

the

countershaft.

snap ring

in

the

groove

at

the

rear

of

the

G. Reassembly and Installation

of

the

Left Reverse Idler Gear Assembly

1. Install

the

plug

in

the

idler shaft.

3. Install

the

bearing inner race

in

the

needle bearing.

If

previously removed, press

2. bore

of

the

gear.

the

needle bearing in

the

82

4. Hold the

the

end

rear washer

of

the

idler shaft

in

place

into

in

the

case bore and insert

the

washer.

5. Install shaft

the

gear

and

is

inserted through

thrust

the

washer

case bore.

on

the

shaft as

the

7. Install reverse idler bore.

the

auxiliary countershaft

front

bearing

in

the

6. Install shaft.

the

elastic stop

nut

and washer

on

the

end

of

the

83

8. Mesh install

the

mainshaft reverse gear with

the

snap ring in

the

ID

of

the

idler gears and

gear.

H.

Reassembly

and

Installation

of

the Auxiliary Drive Gear Assembly

1. Place side down.

the

retainer ring

on

the

auxiliary drive gear, flat

3. Install

hub.

the

snap ring

in

the

groove

at

the

rear

of

the

gear

2.

Press against

the

bearing

the

retainer ring.

on

the

drive gear with

the

snap ring

84

4. Seat the

the

bearing

splines

of

in

the

mainshaft.

the

rear bore, fitting

the

drive gear

on

5. Secure retaining capscrews; three.

the

retaining ring

tighten

to

the

and

wire securely

housing

with

in

the

sets

six

of

6. Install rear

of

the

rear coupling snap ring

the

mainshaft.

in

the

groove

in

the

85

IV.

Clutch

Housing,

Companion

Flange

and

A. Installation

1. Install

notch in capscrews.

the

on

front

the

front

of

the

Clutch Housing

bearing cover, making sure

inside

of

the

cover aligns with

case. Secure with

Auxiliary

that

the

oil

port

the

six retaining

Section

2. Using housing

the

front

on

bearing cover as a pilot, install

the

front

case studs.

the

clutch

3. Secure

the

clutch housing

nuts

and

four

bolts. Use correct ft. lbs.; Bolts - 70-75 ft. lbs. upshift clutch brake assembly cover.

to

the

front

torque:

If

so equipped, install

on

the

case with

Nuts - 170-185

front

the

bearing

six

the

86

B. Installation

l.

Attach the the countershaft

a chain

assembly

input

shaft as necessary

gears

of

hoist

on

the

Auxiliary Rear Housing

to

the

auxiliary housing

to

the

front

case dowel pins,

to

mesh

with

the

auxiliary drive gear.

the

and

move

rotating

auxiliary

2. Secure retaining capscrews.

the

rear· housing

to

the

front

case

with

the

19

C. Installation

l.

Install

the

speedometer drive gear

panion

flange

of

or

the

Companion

yoke

on

the

or

splines

Flange

spacer and

of

the

or

output

Yoke

the

com-

shaft.

2. Install

450-500

the

ft.

elastic lbs.

of

stop

torque.

nut

on

the

output

shaft. Use

87

V.

Shifting

Controls

A. Reassembly and Installation

1. Mount

the

1st-low reverse shift

large

notch

facing

bore

of

each

block

notch

with

the

flat surfaces sides facing each cutouts

in

the

block.

up.

and

other.

Install

install

down

The

the

interlock

of

block

interlock

the

and

the

in

two

the

Shift

Bar Housing Assembly

a vise

with

the

in

the

blocks in

cutouts

pins

fit

in

the

3. Install

the

springs in

the

bores

in

the

blocks.

2. Install wire

the

block

retaining

the

capscrews securely.

plate

with

the

two

capscrews;

88

4. Install

the

spring retaining

capscrews evenly; wire

plate

by

the

capscrews securely.

tightening

the

two

5. Mount

the down and install Secure with

shift

the

bar

housing

the

1st-low reverse bar, block and yoke.

two

lockscrews and wire securely.

in

a vise with

the

long boss

7. Install Secure with

the

2nd-reverse speed shift bar, block and

the

two

lockscrews and wire securely.

yoke.

6. Install an interlock hall

in

the

web

of

the

housing.

89

8. Install

the

interlock ball in

the

web

of

the

housing.

A. Reassembly and Installation

of

the

Shift

Bar Housing Assembly - continued

9. Install ing. Install bar enters

the

3rd-4th speed shift

the

interlock pin

the

boss. Tighten and wire

in

bar

the

and

yoke

in

bore

of

the

lockscr~w.

the

hous-

bar as

the

11. Install

12.

the

5th-6th speed shift bar and

housing. Tighten and wire

Photo

showing all bars blocks and yokes correctly

sembled and wired.

the

lockscrew.

yoke

in

the

as-

10. Install housing.

the

remaining interlock ball in

the

web

of

the

90

13. Make sure sliding clutches position and install case. Secure with

14. Install

the

housing.

that

on

four

tension balls

both

the

shift

the

mainshaft are in

the

shift

bar

the

retaining capscrews.

in

bar

housing

the

bores

housing and

the

neutral

on

the

on

the

top

the

front

of

16. Install

17.

the

tension spring cover and secure with

retaining capscrews.

If

previously removed, install

plug.

the

reverse light pin

the

two

and

15. Install

the

four

tension springs

in

the

bores.

91

If

previously removed, use pliers

18. the

air breather.

or

vise-grips

to

install

B.

Reassembly and Installation

of

the

Gear Shift Lever Housing Assembly

1. Install

the

0-ring in

shift lever housing.

the

groove

at

the

top

of

the

gear

3. Mount gear shift lever on

the

lever, dished side up.

housing upside-down

in

the

housing. Place

in

a vise and install

the

tension washer

the

2. Install housing, pin

the

nut,

to

pivot pin

the

inside.

and

washer

in

the

side

of

the

92

4.

Place

the

tension spring in use a spring driver under

the

three cast lugs in

to

seat

the

housing, taper down, and

the

spring,

one

coil

the

housing.

at

a time,

5. Mount ing ber

C.

the

gear shift lever housing

and

secure with

dust

protector

the

and shift ball

Reassembly and Installation

on

four

capscrews. Install

on

the

of

the

shift bar hous-

the

rub-

lever.

the

Low Gear Air System (T-95ALL Models)

1. Secure

the

with

the

air filter /bracket assembly

two

retaining capscrews.

to

the

rear housing

93

2. Attach of shift cylinder cover. valve and air lines.

the

air filter and

W'

ID air line between

the

elbow fitting

See page 16

the

for

hook-up

tee

fitting forward

on

the

of

low gear

control

T-955ALL

Low

Gear

and

T0-055ALL

Air

System

Transmissions

The following checks are to be made with normal vehicle air pressure

checked for leaks. Refer to Illustration B for check points.

1.

Air Input

With gear shift lever in neutral and normal vehicle air

pressure, loosen the connection at input (end port) the control is

a constant flow

If

there

line between the control

valve

until it can be determined that there

of

air at this point. Reconnect line.

is

no air at this point, there

valve

is

a restriction in the

and air filter.

of

2. Control Valve

With the control from the center should be no air

Move

the deep reduction should now be a constant air flow from line. to

"IN"

to

exist, control

shut

valve

port

at

this point.

off

valve

lever to

"IN",

remove the line

in low gear shift cylinder; there

valve

lever

to

"OUT". There

Move

air.

If

the above conditions do

is

faulty or there

is

a restriction

lever

not

in air line.

3.

Low

Gear

Shift Cylinder-Check Point H

If

any

of

the seals in the low gear shift cylinder are defective the low gear shift will of

lost air,

of

course, will govern the degree

be

affected. The degree

of

failure,

from slow shift to complete failure to shift.

but

with the engine off.

Refer to Illustration G. for location

Leak at seal A

.....

Failure to engage low gear; pressurizing

gear can

Leak at seal B

.....

Failure to engage

low gear; leak from control

exhaust port when

G.

Cutaway.

Low

Gear

Shift

Cylinder.

It

is

assumed air lines have been

of

seals:

of

transmission; low

be

disengaged.

or

disengage

valve

is

Air

air

(Disengages

Constant from

'

valve

"IN".

only

valve

filter

when

is

to

J

air

"out".

low'

Filter

Remove, and at change

Housing

Element

re-install

each

Air

clean

oil

Filter

Plate

94

Gasket

End

Cap

Setting For

Correct

Mainshaft

Axial

Gears

Clearances

Axial Clearance (End Play) Limits Are:

.005"

to

Reverse speed gear Forward speed gears -

Washers are used nesses are available

.005"

to

obtain the correct limits; six thick-

as

follows:

.038"

to

.012"

-----

Use

feeler

between when

to

check

gauge

hubs

assembled

limits

LIMITS

.248-.250 .253-.255 .258-.260 .263-.265 .268-.270 .273-.275

Always use the low limit washer in the REVERSE, SPEED GEAR and

at right. Refer reassembly for

2nd

SPEED

to

the service manual covering mainshaft

method

of

COLOR

GEAR

CODE

White

Green Orange Purple Yellow Black

positions

assembling parts.

as

4th

shown

*In most cases, when setting up the reverse gear clearance,

give

the low limit washer will ever,

if

desired, this clearance can be measured before the mainshaft assembly securing

the

is

installed in the case. This

reverse gear in position

the correct clearance. How-

is

done

by

on

mainshaft with the reverse gear snap ring and the front coupling snap ring; then, secure auxiliary drive gear assembly in.position at rear of

mainshaft with the rear coupling snap ring.

4th

3rd

2nd

Speed

.«:;~

'~

Speed

-----Use

----

-----

washer

U se correct to

set

2nd

speed

Use

feeler between when to

check

Use washer

low

limit

washer

thickness limits

gear

gauge

hubs

assembled

limits

low

limit

of of

95

Reverse

Gear

"'!C==··

'Iii"

,al

----

Use

washer

(Reading

with

feeler between of

reverse

and

hub iliary after

in

case.

low

limit

is

taken gauge

rear

hub

gear

of

aux-

drive

gear

installation

------------------

Tool

Some illustrations in this manual show the

transmission repair

Some

of

from prints or from dimensions

as

they make repair easier, faster and prevent costly damage

these tools can

be

obtained from a regular tool supplier, while others can be made either

as

required by the individual user.

Reference

use

of

specialized tools. These tools are recommended for

to

critical parts.

Listed below are illustrations which show these specialized tools, the tool name and how it can be

obtained. Prints are available for tools which have a Fuller tool number; send requests

Department, Fuller Transmission Division, Eaton

is

Also available upon request

a tool booklet which

Corporation, Kalamazoo, Michigan.

gives

in detail the use and description

to

the Service

of

suggested

specialized tools for rebuilding Fuller Transmissions.

Illustration

No.

5,

Pg.

No. 2,

Pg.

No.

4,

Pg.

5,

Pg.

No.

No.3,Pg.52 No.

4,

Pg. No.3,Pg. No. 2,

Pg.

Pg. 86

No. 3, No.

4,

Pg.

27 Impact puller Make from

24 Snap ring pliers, medium 26 33

73 Flanged-end bearing driver 73 87

92

Jaw pullers, medium Special wrench

Flanged-end bearing driver Make from Fuller

Flanged-end bearing driver Make from Fuller Torque Torque Tension spring driver Make from Fuller tool print T-11938

Tool

%-13 sliding block

Tool supplier

I

wrench, 1000 cap. Tool supplier wrench, 150 cap.

Tool Make plate from Fuller

T-22553-A-4 (round

Make from Fuller

Tool supplier

How

one

end,

supplier

18"

attach

Obtained

steel

rod,

end

nut)

tool

print T-10324

tool

print T-7551

tool

print T-10064

threaded block

tool

print

and

96

Eaton Transmission T-955 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual