1953 JEEP DJ tow

'Jeep*
UNIVERSAL
SERIES SERVICE
MANUAL

reverse sliding gear on the shaft with the shifting

fork
groove
toward the rear.
e. Assemble the
second
speed
gear on the shaft
with the
teeth
which
engage
in the clutch
sleeve

toward the front of the case.
f.
Next,
assemble
the synchronizer unit. The as­ sembly
sequence
of the synchronizer is shown in

Fig.
J-12.
First
install the two springs in the high
and intermediate clutch hub. These springs must
be installed with the spring
tension
opposed.
Place the right lipped end of a spring in a
slot
of the
hub and place the spring in the hub.
Turn
the hub
around and make exactly the same installation
with the other spring starting with the same
slot.
Fig.
J-5. Install the three synchronized shifting

plates
in the three
slots
in the hub with the
smooth

side
of the
plates
out. Hold the
plates
in
position

and slip the
second
and direct
speed
clutch
sleeve
over the hub. Install the two blocking rings one
one each
side
of the hub.
g. Place
some
heavy
grease
in the main shaft
pilot and
position
the thirteen
needle
type
roller bearings.

h.
Install the main drive gear. If the bearing has

been
removed,
note
that the closed
side
is assembled
toward the inside of the case.

i.
Enter
the main shaft bearing in the case and

assemble
the shaft in position.

j.
Install the front bearing retainer. k. For
ease
in installing the countershaft, turn the
transmission case over to allow the gears to mesh.

With
the countershaft thrust washers correctly
positioned,
start the countershaft through the rear
of the case with the lock plate
slot
toward the rear
and the
slot
in alignment with the
slot
in the
12879

FIG.
J-13—T14A
THREE-SPEED
TRANSMISSION

1—
Retainer
Screws
2—
Main
Drive
Gear
Bearing Retainer
3—
Retainer
Gasket
4—
Oil
Seal 5— Snap Ring (small)
6— Snap Ring (large) 7—
Main
Drive
Gear
Bearing
8—
Oil
Retaining Washer (slinger)
9—
Main
Drive
Gear

10— Mainshaft Pilot Bearing Rollers
11—
Case

12— Nut
13—
Flatwasher

14— Spacer 15—
Bearing
Adapter
16— Snap Ring

17—
Mainshaft Bearing
18— Reverse
Gear

19— Snap Ring
20—
Low
Synchronizer Assembly 21— Synchronizer Blocking Ring 22—
Low
Gear

23— Mainshaft
24— Second
Gear

25— Synchronizer Blocking Ring
26—
Second-Third
Synchronizer Assembly
27— Synchronizer Blocking Ring
28— Snap Ring 29— Countershaft Front Thrust Washer (large)
30— Countershaft
Gear

31— Reverse Idler
Gear
Bearing Washer
32— Reverse Idler
Gear
Roller Bearings 33— Reverse Idler
Gear
34— Countershaft
Rear
Thrust Washer (small)
35— Countershaft Bearing Spacer Washer* 36— Reverse Idler Shaft
37— Countershaft Roller Bearings
38— Spacer Washer
39— Countershaft
40—
Lockplate

249

THREE-SPEED
TRANSMISSION

14271

FIG.
J-14—-CANE
SHIFT
CONTROL
HOUSING
ASSEMBLY

1—
Shift
Lever
Knob
2—
Shift
Lever

3—
Control
Housing
4—
Plug
5—
Shift
Rail
(Second-Third) 6—
Shift
Rail
Cap 7—
Interlock
Plunger
8—
Shift
Rail
(Low-Reverse)
9—
Shift
Lever
Fulcrum
Ball

10—
-Pin

11—
Shift
Lever
Support Spring
12—
Shift
Fork
13— Poppet
Ball

14— Poppet Spring
15—
Gasket

16—
Lockwasher
17—Bolt reverse idler gear shaft. Press the shaft through
the gears and
into
the front of the case, forcing out Tool W-193.

I.
Locate the lock plate in the
slots
of the reverse

idler
gear shaft and countershaft. Tap the two
shafts until lock plate is
tight
against case, m. Install rear bearing snap ring and rear main-
shaft bearing on shaft.
n.
Attach rear bearing retainer and gasket to the
transmission case. Tighten cap screws evenly and
securely.

Install
speedometer
drive gear on shaft with

o.

the shoulder of gear toward the front. Check
the oil seal which is installed next and replace with
new one if necessary.

p.
Install the companion coupling
flange
with the 250

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

'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

Jl

FOUR-SPEED
TRANSMISSION
U.
On the T-98 transmission remove the snap rings
holding the thrust washer, bearing rollers, second-

speed
gear, and spacer on the mainshaft. Slide
these
components
off the shaft. Refer to Fig. Jl-3.

Note:
The second
speed
gear in the T-18 trans­
mission is a slide fit
onto
the mainshaft and
does
not contain roller bearings or a spacer.
v. If the synchronizer assemblies are to be dis­
assembled and serviced proceed as follows:
Wrap

the
second-speed
synchronizer assembly in a cloth
to prevent losing the lock balls and springs. Push the clutch hub out of the low-and-second-speed
gear in a direction
opposite
the shift fork
groove.
Remove the cloth.
Lift
the balls, springs, and
plates out of the hub.
w. Remove the lockplate for the countershaft and
reverse idler gear shaft.

x.
Use a pry bar in the
slot
of the reverse idler gear
shaft to
loosen
the shaft.
Then,
slip the reverse

idler
gear shaft out of the housing and gear.
Lift
the reverse idler gear assembly from the transmission case.
y. To remove the countershaft, use a heavy brass
drift
and drive the countershaft toward the
rear
of
the transmission case. When the countershaft end
is just about even with the inside of the trans­ mission case, use a dummy shaft to force it the
remainder of the way. (Since a dummy shaft is a
FIG.
Jl -5—FOUR-SPEED TRANSMISSION CONTROL PARTS

1—
Shift
Lever

2—
Control
Housing Pin

3—
Shift
Handle
4—
Control
Housing Cap 5—
Washer

6—
Control
Lever
Spring
7—
Breather
Assembly
8— Reverse Shift
Rail

9—
Shift
Rail
Interlock Plunger

10—Expansion
Plug 11—
Low
and Second Shift
Rail

12—
Shift
Rail
Interlock Pin
13—
Direct
and
Third
Shift
Rail

14—
Control
Housing
15—
Shift
Rail
Poppet Spring
16—
Shift
Rail
Poppet
Ball

17—
Lockwire
18—
Low
and Second Shift
Fork
19—
Lock
Pin
20—
Shift
Rail
End 21—
Direct
and
Third
Shift
Fork

22— Reverse Plunger
23— Reverse Plunger Spring
24— Reverse
Rail
End
25—
Cotter
Pin
26— Reverse Plunger Poppet Spring
27— Reverse Plunger Poppet
Ball
28—
C-Washer
262

'Jeep*
UNIVERSAL
SERIES
SERVICE
MANUAL

Jl
necessity for assembly, one should be made at this
time to assist on disassembly. One can be made by
using a \Y%N [2,86 cm.] diameter steel rod cut to

9.850*
{25,02
cm.] long.
Break
sharp
edges
with a
mill
file.) Keep the dummy shaft in contact with
the countershaft at all times to prevent dropping
the bearing rollers or thrust washers,

z.
With
the dummy shaft in position, place the
transmission
case on its side and carefully
roll
the countershaft gear cluster out of the case,

aa.
Complete the disassembly by removing the dummy shaft, thrust washers, four
sets
of bearing
rollers,
and spacers.

bb.
To disassemble the reverse idler gear assembly,
remove one of the snap rings and tap out the

washers,
both
sets
of bearing rollers, center spacer,
and
sleeve.
Remove the remaining snap
ring.

J1-4.
4-Speed
Transmission
Control
Housing
Disassembly

•
Refer to Fig. Jl-5.

The
gearshift lever, spring, and spring seat were previously removed for removal of the transmission

from
the vehicle.

a.
Remove the lock pins from the gearshift forks

and
gearshift rod ends. Remove the expansion plugs
from
the front and
rear
of the gearshift lever base. Remove back-up light switch.

b.
Remove the center (third and high) gearshift

rod
first. Drive this gearshift rod out the
rear

of the gearshift lever base. As the gearshift rod is
withdrawn
from the center section of the gearshift base, remove the interlock pin from the cross­
over
hole
in the gearshift rod. Before the gearshift
rod
is removed from the center section of the gear­
shift base, place a finger over the
hole
to prevent

loss
of the
ball
and spring.
Then
remove the rod.

c»
Remove the low- and second-speed gearshift rod
in
the same manner.

d.
Remove the gearshift rod lock balls and springs

and.
with a piece of
wire,
push the two gearshift rod
interlock
plungers out of the pockets in the center
section of the gearshift base.

In
the reverse gearshift rod end is a spring-loaded
plunger which prevents the
driver
from accidentally
shifting into reverse gear. Should this part require
servicing,
proceed as follows:
Remove the cotter key from the rod end assembly

and
at the same time hold a finger over the
hole

to prevent
loss
of the spring.
Then
shake out the
spring
and
ball.
Compress the plunger and spring

until
the C-washer
groove
just clears the end of
the casting. Remove the C-washer.

J1-5.
4-speed
Transmission Reassembly •
Refer to Fig. Jl-1.
Assemble the unit in the reverse order of dis­
assembly noting the following points:

a.
Assemble the countershaft assembly with the
fabricated
dummy shaft. The bronze front thrust

washer
and the steel backed bronze
rear
thrust
washer
should be coated with stiff lubricant and
installed
with the lugs
engaged
in the notches

in
the end of the gear cluster. Place the assembly
in
the transmission case and install the counter­
shaft from the
rear,
keeping the countershaft and
dummy shaft in contact to prevent dropping

bearing
rollers or washers. Tap the countershaft
lightly into position in the front of the case but
do not seat it until the reverse idler gear assembly

and
shaft have been installed in the case.

b.
Install
the reverse idler gear shaft in the case

until
the lock plate slot is adjacent to the slot in
the countershaft. Insert the lock plate in the
slots

of the shafts making sure the plate ends are square

with
the slots.
Install
the lock plate screw and
lockwasher
to act as a pilot while tapping the
shafts alternately into position in the case. Tighten
the lock plate screw securely.

c.
Begin assembly of the second speed synchronizer assembly (see
Fig.
Jl-6) by installing the low-and
-

second-speed clutch hub in the low-and-second-
speed gear.
Install
the retaining ring in the speed gear.
Install
the retaining ring in the low and
FIG.
Jl
-6—ASSEMBLING
SECOND-SPEED

SYNCHRONIZER
1—
Low
and Second
Clutch
Gear

2—
Ball

3—
Low
and Second
Clutch
Hub
4—
Shifting
Plate
second speed gear. Slide the hub out of the gear

in
the direction
opposite
the shift fork
groove

until
the
holes
in the hub are clear of the gear.
Install
the shifter plates and springs. Push the
hub back into the gear until the springs touch the

internal
teeth
of the gear. Push one of the shifter
plates toward the center of the gear while installing

ball.
See
Fig.
Jl-6 .
This
will
hold the
ball
in position.
Install
the other two balls in the same manner.

Be
careful when rotating the assembly to prevent the hub from slipping out of the gear. When the

balls
are installed, push the hub into the gear

until
the balls snap into the neutral position.

d.
Assemble the
direct
-
and
-
third
synchronizer as­
sembly in accordance with the instructions given

in
Section J, Par.
J-lle.

e.
Start
assembly of the mainshaft assembly by 263

'Jeep'
UNIVERSAL SERIES SERVICE
MANUAL

Jl

FIG.
Jl-9—INCORRECT
OIL
SEAL POSITION J1-7.
Installing
4-Speed
Transmission

Install
the four-speed transmission in the reverse

order
of the removal, noting the following points:

When
installing the front adapter plate (Fig. Jl-1,

insert
the bearing retainer in the adapter plate and
position the adapter plate against the flywheel
housing.
With
the adapter plate cap screws tight, make sure the bearing retainer can be removed
freely. If not, relocate the adapter plate and tighten
again to
test
proper location of adapter plate.
When
installing
rear
adapter plate, be sure cap
screw heads do not protrude beyond the adapter
plate face or interfere with transfer case fitting
tightly against
rear
adapter plate.

When
installing transfer case gear on the trans-
FIG.
Jl-10—CORRECT
OIL
SEAL POSITION

mission
rear
splined drive shaft tighten the large
gear nut securely and insert cotter pin.
Sink
cotter

pin
well into nut
slots
so it
will
clear
P.T.O.
drive.

J1-8.
Adapter Plate
Oil
Seal
It
is important that the four-speed transmission
adapter plate oil seal be correctly installed to
prevent flow of lubricant from the transfer case
to the transmission. Should the lubricant level be
low in the transfer case and high in the transmission,
check the position of the oil seal. See Fig. Jl-9 and

Jl-10.
Correctly
positioned, the lip of the oil seal is
toward
the transfer case. Always replace the oil

seal
whenever it has been removed. 265

'Jeep'
UNIVERSAL
SERIES
SERVICE
MANUAL

M
If
the joint binds when assembled, tap the yoke
lightly to relieve any pressure on the bearings at the end of the
journal.

M-8-
Steering
Knuckle
Service

The
steering knuckle pins pivot on tapered roller
bearings. Replacement of
these
bearings requires

removal
of the hub and brake drum assembly,
wheel bearings, axle shaft, spindle, steering tie rod,

and
steering knuckle. Disassemble the steering
knuckle
as follows:
Remove the
eight
screws which hold the oil seal

retainer
in place. Remove the four screws holding
the lower pivot pin bearing cap. Remove the four screws holding the upper bearing cap in place. Re­
move
the bearing cap. The steering knuckle can
now be removed from the axle. Wash all parts in cleaning solvent. Replace any damaged or worn

parts.
Inspect the bearing and races for scores,
cracks,
or chips. Should the bearing cups be damaged,
they
may be removed and installed with

Special
Driver
W-138, as shown in Fig. M-9.
M-9.
Reassemble
and
Bearing Preload

Reverse
the procedure of Par. M-8 to reassemble
the unit. When reinstalling the steering knuckle, sufficient shims must be installed under the top

bearing
cap to obtain correct preload on the bear­
ing.
Shims are available in
these
thicknesses: .003"
[0,076
mm.] .010"
[0,254
mm.] 005"
[0,127
mm.] .030"
[0,762
mm.]

Install
one each of the
above
shims at the top only.
Install
the bearing caps, lockwashers, and screws,

and
tighten securely.
Check
the preload on the bearings by hooking a

spring
scale, Tool C-690, in the
hole
in the knuckle

arm
for the tie rod socket.
Take
the scale reading when the knuckle has just started its
sweep.

The
kingpin bearing preload should be 12 to 16 lb. [5,43 a 7,24 kg.] with the oil seal removed. Remove

or
add shims to obtain a preload within
these
limits.
FIG.
M-9—SPINDLE
PIN
BEARING
CUP
DRIVER

1—Tool
W-138
FIG.
M-10—TURNING
ANGLE
STOP
SCREW

1—Stop
Screw
M-10.
Replacing Steering
Knuckle
Oil Seal
Remove the old steering knuckle oil seal by remov­ ing the
eight
screws which hold it in place.
Earlier

production vehicles are equipped with seals con­ sisting of two oil seal halves.
Later
production vehicles are equipped with oil seal assemblies con­
sisting of a split oil seal and backing ring assembly,

an
oil seal felt, and two seal retainer plate halves.

Examine
the spherical surface of the axle for scores or scratches which could damage the seal.
Smooth any roughness with emery cloth. Before installing the oil seal felt, make a diagonal
cut across the top side of the
felt
so that it may be
slipped over the axle.
Install
the oil seal assembly

in
the
sequence
given above, making sure the

backing
ring (of the oil seal and backing ring as­
sembly) is toward the wheel.

After
driving in wet, freezing weather swing the
front
wheels
from right to
left
to remove moisture

adhering
to the oil seal and the spherical surface of
the axle housing.
This
will
prevent freezing with

resulting
damage to the seals. Should the vehicle be
stored for any period of time, coat
these
surfaces

with
light grease to prevent rusting.

M-11.
AXLE
SHAFT
INSTALLATION

Refer
to Fig. M-2.

Installation
of the front right and
left
axle shaft
is the same and is given in the following
paragraphs.

a.
Clean
all parts of
dirt
and foreign matter.

b.
Enter
universal joint and axle shaft assembly

in
the axle housing, taking care not to knock out
the inner oil seal.
Enter
the splined end of the
axle shaft
into
the differential and push
into
place. 281