1953 JEEP DJ transmission

J

THREE-SPEED
TRANSMISSION

12866

FIG.
J-l8—REMOVING-INSTALLING MAINSHAFT GEAR ASSEMBLY

1285S

FIG.
J-19—REMOVING-INSTALLING
LOCKPLATE
1— Reverse
Idler
Shaft 2—
Lockplate

3—
Countershaft

12884

FIG.
J-20—REMOVING-INSTALLING COUNTERSHAFT
1—Arbor
Tool W-335
2
—Counter
gear
3—Countershaft 252
FIG.
J-21—REMOVING-INSTALLING

REVERSE
IDLER
GEAR

1—
Washer

2—Arbor
Tool W-336

3—
Reverse
Idler
Gear
4— Reverse
Idler
Shaft k. Remove the countershaft gear assembly and the
two thrust washers. Remove spacer washers, bear­ ing rollers, and spacer from the countergear hub
assembly for inspection.

I.
Using Tool W-336 drive the reverse idler shaft

rearward,
out of the case. Remove reverse idler
gear, washers, and roller hearings as an assembly.

Refer
to Fig. J-21.

m.
Remove the clutch hub snap ring and the
second-third synchronizer assembly from the main-
shaft. Refer to Fig. j-22.
V

^^r"***
12852
FIG.
J-22—REMOVING-INSTALLING SECOND-
THIRD
CLUTCH
HUB
SNAP
RING

1—
Second-Third
Synchronizer Assembly 2— Snap
Ring

3—
Mainshaft
n.
Remove second
speed
gear from mainshaft.

o.
Remove reverse gear from mainshaft.
p.
Remove the clutch hub snap ring, and the low
synchronizer assembly from the mainshaft. Refer
to Fig. J-23.
q. Remove low
speed
gear from mainshaft.
r.
This
completes
the transmission disassembly.

'Jeep'
UNIVERSAL SERIES
SERVICE
MANUAL

FIG.
J-23—REMOVING-INSTALLING LOW
CLUTCH
HUB
SNAP
RING 1— Mainshaft
2— Snap
Ring

3—
Snap
Ring
Groove 4—
Low
Synchronizer Assembly

J-17. DISASSEMBLY SYNCHRONIZER
ASSEMBLIES

Important:
Should a synchronizer assembly
(either low-and-reverse or second-and-high) be re­
placed for any reason on a cane shift transmission,
the shift fork that operates the synchronizer being
replaced must have an identifying letter "A" ap­ pearing just under the shaft
hole
on the side

opposite
the pin. If the letter "A"
does
not appear
on the existing fork, it must be replaced with a fork that has a letter "A" appearing thereon.
FIG.
J-24—SECOND-THIRD SYNCHRONIZER
ASSEMBLY
Refer
to Fig. J-24.

Second-Third
Synchronizer Unit.

a.
Remove springs (one on each side of unit). b.
Mark
sleeve
and hub
before
separating to en­
sure proper installation at time of assembly.
c. Remove hub from
sleeve.

d.
Remove the three synchronizer plates from third

speed
side of the hub. e.
Clean
and inspect synchronizer assembly parts.
f. Assemble synchronizer in reverse order of dis­ assembly, making certain the two synchronizer

spring
openings
are installed 120° of each other,
with spring tension
opposed.

Low
Synchronizer Unit.

Refer
tc- Fig. J-25.
The
low synchronizer assembly is serviced in the
same manner as second-third with exception of one
synchronizer spring.
12853

FIG.
J-25- -LOW SYNCHRONIZER
ASSEMBLY
1—
Synchronizer
Spring (2)
2—
Clutch
Hub

3—
Clutch
Sleeve
4— Shifter Plate
1
—Clutch
Hub
2— Shifter Plate

3—
Synchronizer
Spring (1)
4—
Clutch
Sleeve

J-18.
TRANSMISSION
CLEANING
AND
INSPECTION

Refer
to Fig. J-13.

a.
Wash transmission case inside and
outside
with cleaning solvent.
b.
Check
bearing and shaft bores. Inspect the case
for
cracks.
Check
the front and
rear
faces
and dress off any burrs with a fine
mill
file. If cracks are
found and bores are not ture, replace the case.
c.
Clean
and inspect all gears and bronze blocking
rings for
cracks,
chipped or cracked
teeth,
or ex­ cessive wear of the
teeth.

Note:
Whenever any transmission gear requires
replacement, the gear with which it
meshes
should
also be replaced.

d.
Inspect all bearings or bushings for wear or damage.
e.
Check
the second-third, and low synchronizer clutch
sleeves
making certain
they
slide freely on the clutch hub. 253

J

THREE-SPEED TRANSMISSION
J-19.
TRANSMISSION
REASSEMBLY
—

T14A

Note; Lubricate all internal transmission
parts

before
assembly
using the proper lubricant.
a. Position
reverse
idler
gear
with
Arbor
Tool

W-336,
roller bearings, and thrust
washers
in the
case.
Install
reverse
idler shaft forcing out
Tool

W-336.
Make certain the slot end of the idler shaft
is correctly aligned to receive the lockplate. Refer
to Fig. J-19.
FIG.
J-26—COUNTERSHAFT GEAR
BEARING ARBOR
1—
Roller
Bearings 2— Spacer
3—
Arbor
Tool W-335
b.
Assemble the
countergear
center
spacer,
four
bearing
spacers,
and countershaft bearing rollers

in
the countershaft
gear
hub
assembly
as
follows,
using Arbor
Tool
W-335.
Place
the
center
spacer

inside the hub and insert Arbor
Tool
in the
spacer.

Place
a bearing
spacer
at
each
end of the
center
spacer
and load a set of bearing rollers, and
place

a bearing
spacer
at
each
end to complete the as­
sembly. Refer to Fig. J-26 and J-27.

c.
Install large
countergear
thrust
washer
in the

front
of the
case.
Position small thrust
washer
on
the countershaft
gear
hub
with
lip facing groove in
the
case.
Holding the countershaft
gear
assembly
in
position, start the countershaft in the
rear
of the

case
with
the lockplate slot toward the
rear
and the
slot in alignment
with
the slot in the
reverse
idler
FIG.
J-27—COUNTERSHAFT BEARINGS
AND SPACERS INSTALLED
1— Countershaft
Gear
2— Countershaft Bearing Rollera
3— Countershaft

4—
Spacers
5
—Center Spacer
FIG.
J-28—LOCKPLATE INSTALLATION
1— Reverse Idler Shaft 2—
Lockplate

3— Countershaft
gear
shaft.
Press
shaft through the
gear
hub as­
sembly and into the front of the
case
forcing out

Tool
W-335.

d.
Locate the lockplate in the slots of the
reverse

idler
shaft and countershaft. Tap the two
shafts
alternately
until
lockplate is tight
against
case.

Refer to Fig. J-28.
e. When assembling the mainshaft,
first
install mainshaft low
gear
and bronze blocking
ring.
In­

stall
the low synchronizer
assembly,
then install
the
select
fit
snap
ring.
Refer to Fig. J-23.
Note; Mainshaft
snap
rings are
select
fit to
eli­

minate clutch hub and main drive
gear
bearing
end play. Make certain correct
snap
ring
is installed at
assembly.

f.
Install the mainshaft
second
gear
and bronze

blocking
ring.
Install the second-third synchronizer
assemblv,
then install
select
fit
snap
ring.
See
Fig.
J-22.

g.
Install
reverse
gear
on mainshaft.

h.
Install the mainshaft and
gear
assembly
as a

unit,
through the top cover opening of the trans­
mission
case.
Refer to Fig. J-18.

i.
Install bronze blocking
ring
onto the
second-

third
synchronizer
assembly.

j.
Install main drive
gear
roller
bearings
using low
melting
point
grease
to hold them in place. Refer
to Fig. J-29.
k. Install the main drive
gear
and oil retainer

washer
(slinger) into the
case
with
the cutaway
portion
of the
gear
positioned downward toward
the
countergear
assembly.
Guide main drive
gear
onto the mainshaft using
care
not to drop the roller bearings, as shown in Fig. J-30. 254

THREE-SPEED
TRANSMISSION

ing
snap
ring.
Care should be taken to
install
the
proper
snap
ring
at
these
locations.

fl.
Install
the mainshaft rear bearing
adapter,

spacer,
transfer
case
drive
gear,
flat
washer, and

nut.
Torque nut 130 to 170
lb-ft.
[17,9 a 23,5
kg-m.].
Refer to Fig. J-15.
o. Check the main drive bearing retainer oil seal.
If
seal is
worn
or damaged it must be replaced.
Refer to Fig. J-33. 12858

FIG.
J-34—INSTALLING
MAIN
DRIVE GEAR BEARING RETAINER

-Gasket

-Bearing
Retainer
p.
Install
main drive
gear
bearing retainer gasket,
and retainer assembly. Make certain the oil drain

hole
slot in the retainer housing and gasket are

aligned.
Install
the three
ferry
type screws and
washers. Refer to Fig. J-34.
q.
Install
the transmission
case
cover gasket,
p.
Position the transmission
gear
train
and
shift

cover housing assembly in neutral. Enter the

shifter
forks
into
the
clutch
sleeves
and
align
cover,

case
and gasket holes.
Install
capscrews and
lock­

washers
and torque 8 to 15
lb-ft.
[1,1 a 2,1
kg-m.].
Refer to Figs. J-35 and J-36.

S.
This completes the transmission reassembly. 12857

FIG.
J-35—MAINSHAFT
GEAR TRAIN
—
NEUTRAL
1— Reverse Gear

2— Low
Synchronizer Assembly

3— Low
Gear
4— Second Gear
5—
Second-Third
Synchronizer Assembly
6—
Main
Drive
Gear

FIG.
J-36—INSTALLING CANE SHIFT
COVER
ASSEMBLY
1—
Control
Housing'
Cover•''

2—
Gasket
3—
Second-Third
Shift
Fork
4— Low-Reverse
Shift
Fork 256

'Jeep*
UNIVERSAL
SERIES
SERVICE
MANUAL

J J-20
TRANSMISSION
SERVICE
DIAGNOSIS

SYMPTOMS
PROBABLE
REMEDY

Lock
in Two
Gears
Replace
Poppet
or Shift Levers

Slips
Out of High Gear Transmission Misaligned with Bellhousing

End
Play in Main Drive Gear Damaged Pilot Bearing or Front Bearing.

Slips
Out of Second
Worn
Gear Replace
Weak
Poppet
Spring Replace

Noise
in Low Gear
Gear
Teeth Worn Replace Gears
Shifting
Shoe
Bent Replace
Shoe
Lack
of Lubrication Drain and Refill

Grease
Leak into Bellhousing Gasket Broken Front Bearing Retainer Replace
Transmission Main Drive Gear Oil Seal Replace Align Transmission Case to Bellhousing
and Bellhousing to Engine
Tighten Front Retainer
Replace
J-21.
TRANSMISSION
SPECIFICATIONS

HURRICANE
F4
ENGINE
3-SPEED

Vehicle:
CJ-3B,
CJ-5,
CJ-5A,

CJ-6,
CJ-6A
DJ-5,
DJ-6
Make
Type

Speeds

Ratios: —
First
Second

Third

Fourth
Warner

T90C

Synchronous Mesh
3 Forward — 1 Reverse
3.339
to 1 1.551 to 1 1.000 to 1
Warner

T96

Synchronous Mesh
3 Forward — 1 Reverse
2.605
to 1 1.630 to 1
1.000 to 1
Reverse
Interlock
Poppet
Clearance. . .
3.798
to 1

3.536
to 1
.001" to .007"

[0,025
a 0,178 mmJ

DAUNTLESS
V-6
ENGINE
3-SPEED

Vehicle:
CJ-5,
CJ-6,
CJ-5A,
CJ-6A

DJ-5,
DJ-6
Late
CJ-5, CJ-6
Make
Warner
Warner Warner

Model
AS7
T86AA

AS9
T86AA
T14A

Type..
Synchromesh
Synchromesh Synchromesh

Speeds
3 Forward — 1 Reverse 3 Forward — 1 Reverse 3 Forward — 1 Reverse
Ratios: —
First
2.798
to 1
2.798
to 1
3.100 to 1

Second
1.687 to 1 1.687 to 1 1.612 to 1

Third
1.000 to 1
1.000 to 1 1.000 to 1
Reverse
3.798
to 1
3.798
to 1 3.100 to 1 257

'Jeep'
UNIVERSAL
SERIES
SERVICE
MANUAL

Jl
FOUR-SPEED
TRANSMISSION

Contents

SUBJECT
PAF.

GENERAL.
Jl-1

FOUR-SPEED
TRANSMISSION
REMOVAL.
Jl-2
Four-Speed Transmission
Disassembly
.
Jl-3 Four-Speed Transmission Control Housing
Disassembly
Jl-4
Four-Speed Transmission Reassembly Jl-5
SUBJECT
PAR.
Four-Speed Transmission Control Housing
Reasse mbly Jl-6

Transfer
Case Adapter Plate Oil Seal .
.
Jl-8
Four-Speed Transmission Installation Jl-7

FOUR-SPEED
TRANSMISSION
SPECIFICATIONS.
.
.
Jl-10

SERVICE
DIAGNOSIS
Jl-9 10771

FIG.
Jl-1—FOUR-SPEED
TRANSMISSION

1—
Control
Housing Gasket
2—
Control
Housing Assembly
3— Mainshaft Assembly
4—
Thrust
Washer
5—
Thrust
Washer
6— Reverse Shifting
Shoe
7— Reverse Shifting Arm
8—
C-Washer

9— Reverse Shifting Arm Pivot
10—
O-Ring

11— Reverse Idler
Gear
Assembly
12— Snap Ring
13—
Thrust
Washer
14—
Sleeve

15— Bearing Rollers
16— Spacer
17— Reverse Idler
Gear

18— Pipe Plug
19— Countershaft Gears 20— Bearing Rollers
21— Spacer 22— Spacer
23—
Thrust
Washer

2
4
—Bellhousi ng-to-Transmission Adapter Plate
25— Bearing Retainer
26— Bearing Retainer Bolt
27— Bearing Retainer Lockwasher
28— Bearing Retainer Gasket
29—
Main
Drive
Gear

30— Bearing Rollers 31— Transmission Case
32— Adapter Plate Lockwasher
33— Adapter Plate Capscrew
34— Side Opening Cover Gasket
35— Side Opening Cover Bolt
36— Side Opening Cover Lockwasher
37— Side Opening Cover 38— Countershaft
39— Shifting Arm Pivot Taper Pin
40— Bearing
41— Snap Ring
42—
Oil
Seal 43— Spacer
44— Reverse-Idler
Gear
Shaft 45—
Lock
Plate
46—
Lock
Plate Lockwasher
47—
Lock
Plate Bolt
48— Gasket
49— Adapter Plate 50— Adapter Plate Lockwasher
51— Adapter Plate Bolt
52— Cotter Key
53— Nut 54— Washer
55— Gasket 259

Jl

FOUR-SPEED
TRANSMISSION
J1-1.
GENERAL

A
model T-98 four-speed transmission with a cane- type shift is optional on 'Jeep* Models CJ-5 and
CJ-6
equipped with the Hurricane F4
engine.
A model T-18 four-speed transmission is optional on
the 'Jeep* Model
CJ-5
equipped with the Dauntless
V6
engine.
These transmissions provide four
speeds

forward
and one reverse with synchromesh
engage­
ment in second,
third,
and fourth speed.

For
quick identification, the optional
4-speed
transmission is 11%"
[30,16
cm.] long whereas the

standard
3-speed
transmission is 8"
[20,32
cm.] long. However the instructions for removal and
installation of the two transmissions are the same.

J1-2.
Four-Speed
Transmission Removal Use the procedure outlined under the heading,
"TRANSMISSION
REMOVAL"
Section J Par.

J-6.
FIG.
Jl-2—FOUR-SPEED TRANSMISSION MAIN DRIVE
GEAR

1—
Snap
Ring
3—Bearing 5—Main
Drive
Gear

2—
Snap
Ring
4—Washer 6—Bearing Rollers

FIG.
Jl-3—T-98
FOUR-SPEED TRANSMISSION MAIN SHAFT 1—
Blocking
Ring

2—
Direct
and
Third
Clutch
Sleeve

3—
Snap
Ring

4—
Spring

5—
Shifting
Plate
6—
Direct
and
Third
Clutch
Hub 7—
Third
Speed
Gear
Assembly
8—
Snap
Ring
9—Thrust
Washer
10—
Bearing
Rollers

11—
Second Speed
Gear

12—
Spacer
13—
Mainshaft

14—
Blocking
Ring

15—
Shifting
Plate
16— Poppet
Spring
17—
Ball

18—
Low
and Second
Clutch
Hub 19—
Retaining
Ring

20—
Low
and Second Speed
Gear
21—
Second Speed
Synchronizer
Assembly
22—
Direct
and
Third
Synchroniser Assembly 260

'Jeep*
UNIVERSAL
SERIES SERVICE
MANUAL

Jl

1—
Blocking
Rir

2—
Direct
and 1

3—
Snap
Ring

4—
Spring

5—
Shifting
Plat

6—
Direct
and 1 7—
Third
Speed
J1-3
4-Speed Transmission Disassembly

•
Refer to Fig. Jl-1.

Note;
The
models
T-98 and T-18 four-speed
transmission are similar in design with exception of
the second
speed
gear-to-mainshaft arrangement.
In
the model T-18 transmission, the second
speed

gear is a slide fit on the mainshaft, whereas in the
model T-98 transmission roller bearings and a
spacer are required in this area. Refer to Figs. Jl-3
and
Jl-4.

a.
Remove the transmission to transfer case adapter plate and gasket. Remove the oil seal from
the plate and, if damaged, discard the seal.
b. Remove the transmission control housing as­
sembly. Refer to paragraph Jl-4 for its dis­
assembly.
c. To make certain the two blocking rings, direct-

and-third
clutch hub, and direct-and-third clutch
sleeve
will
be assembled in their original relation­

ship,
mark them with a quick drying lacquer or an
electric pencil. Also mark the blocking ring, low-
and-second clutch hub, and the low-and-second
speed
gear.

d.
Slide the low-and-second
speed
gear toward the rear of the transmission case.
e.
Disengage
the reverse shifting arm and reverse shifting
shoe
from the reverse idler gear. Remove
the arm from the reverse shifting arm pivot.
f. Move the low-and-second
speed
gear
into
neutral position.
g. Remove the bearing retainer and gasket.
Remove the snap rings from the main drive gear
and
the outer race of the ball bearing.

h.
With a bearing puller, remove the main drive
gear ball bearing. 1436S
i
Hub

Gear

izer
Assembly

ironizer
Assembly
i.
Remove the oil slinger.

j.
Remove the snap ring from the outer bearing
race
of the transmission mainshaft ball bearing.
k. With a bearing puller, remove the mainshaft

ball
bearing.

Note:
It may be necessary to drive the mainshaft

rearward
by striking the end of the main drive gear with a lead hammer to get sufficient clearance
to install the bearing puller plates.

I.
Slide the direct-and-third clutch
sleeve
to the

rear
(third
speed)
position. Separate the mainshaft
assembly from the main drive gear. Be careful
not to
lose
any of the mainshaft pilot bearing
rollers.

m.
Lift
the mainshaft assembly out of the top
of the transmission case.

n.
Remove the main drive gear from the trans­
mission case.
o. Remove the mainshaft bearing rollers from the gear.
p.
Mark
relationship
between
synchronizer hubs

and
the splines on the mainshaft.
q. Begin disassembly of the main shaft assembly by removing the snap ring which holds the direct

and
third synchronizer assembly on the mainshaft,

r.
Remove the front blocking ring from the front
of the shaft.
s. Slide the direct-and-third-synchronizer assembly

and
the third-speed-gear assembly off the main-shaft.
t. Remove the snap ring at the rear of the main-
shaft. Slide the second synchronizer assembly and the blocking ring off the mainshaft.

FIG.
Jl-4—T-18
FOUR-SPEED TRANSMISSION MAINSHAFT ASSEMBLY
ng 8—Snap
Ring
15—Ball

third
Clutch
Sleeve
9—Thrust
Washer 16—Low and Second
Clutch
10—
Second
Speed
Gear
17—Retaining
Ring

11—
Mainshaft
18—Low and Second Speed
te 12—Blocking
Ring
19—Second Speed
Synchroni

rhird
Clutch
Hub 13—Shifting Plate 20—Direct and
Third
Synch

Gear
Assembly 14—Poppet
Spring
261