1953 JEEP DJ Service Manual

'Jeep'
UNIVERSAL
SERIES
SERVICE
MANUAL

s
SPRINGS
AND
SHOCK
ABSORBERS

Contents

SUBJECT
PAR. SUBJECT PAR.
Pivot Bolts S-3 Spring Removal S-4
Shock
Absorbers S-7 Spring Shackles S-2

Spring
Installation S-5 U-Shackles S-6

S-1.
GENERAL

Semielliptical
leaf springs are used for all models.
The
springs are hung longitudinally from the frame
side rails by means of brackets welded to the
rails.
All
axles are firmly attached to the springs by U-

bolts
(spring clips), spring saddles welded to the
underside of the axles, and spring plates under the
springs.
Early
model DJ-5 and DJ-6 front axles (I beam) are attached to the springs with conven­
tional
bolts
and spring plates. Spring center
bolts
are
inserted in the axle spring saddles to prevent
shifting of the axle.

All
front springs, except as noted below, are pro­vided with shackles at the front ends of the springs

and
pivot
bolts
at the
rear
ends of the springs. Model CJ-5 up to
Serial
No. 44437 and Model

CJ-6
up to
Serial
No. 11981 are provided with shackles at the
rear
ends of the front springs, and
pivot
bolts
at the front ends.

Note:
Models
CJ-5A
and
CJ-6A
are equipped with
the two
stage
type front and
rear
spring.

All
rear
springs are provided with shackles at the

rear
end and pivot
bolts
at the front end.
Springs
should be examined periodically for broken

or
shifted leaves,
loose
or missing rebound clips,
angle of spring shackles, and position of springs
on the saddles. Springs with shifted leaves do not have their normal strength. Missing rebound clips may permit the spring leaves to fan out or break
on rebound. Broken leaves may make the vehicle

hard
to handle or permit the axle to shift out of

line.
Weakened springs may break causing difficulty
in
steering. Spring attaching clips or
bolts
must be tight. It is
suggested
that they be checked at each
vehicle inspection and torqued 45 to 55 lb-ft. [6,2 a 7,6 kg-m.].

S-2.
Spring Shackles

Rubber-bushed
shackles are provided on all current
production vehicles. The steel-backed rubber (silent bloc) bushings are pressed into the spring

eyes
and mounting brackets. The shackle
bolts
tighten the side plates against the inner steel back­
ing of the bushings. Oscillation of the springs is
taken in the rubber bushings.

All
vehicles produced before early 1957 were
equipped with U-shackles and threaded core bush-
*3(

21-

to It is
FIG-
S-1—FRONT SPRING
AND SHOCK ABSORBER
EARLY
CJ-5 and CJ-6
1—
Front
Shock Absorber
Bracket
2—
Front
Axle
Bumper

3—
Bolt

4—
"U"
Bolt
5—
"U"
Bolt
6—
Spring
Pivot
Bracket

7—
Pivot
Bolt
8—
Nut

9—
Front
Spring
Assembly

10—Front
Spring
Clip
Plate
11
—Lockwasher

12—
"U"
Bolt Nut

13—
Shackle

14—
Retainer

15—
Grease
Seal

16—
Threaded
Shackle
Bushing

17—
Lube
Fitting

18—
Mounting
Pin Bushing
19—
Washer

20—
Lock
Nut
21—
Shock
Absorber Assembly

1190L
345

SPRINGS
AND
SHOCK
ABSORBERS

FIG.
S-2—FRONT
SPRING
AND
SHOCK
ABSORBER
—
LATE
CJ-3B,
CJ-5,
CJ-5A,
CJ-6,
CJ-6
A,
DJ-5, DJ-6 1—
Bracket
and Shaft

2—
Axle
Bumper

3—
Bolt
and
Lockwasher

4—
Spring
Clip
5—
Bolt

6—
Plate
7—
Bearing

8—
Bracket

9—
Nut
and
Lockwasher

10—
Spring

11—
Nut
12—
Washer
13—
Bushing

14—
Bolt

15—
Plate
and Shaft
16—
Lockwasher

17—
Nut

18—
Spring
Clip
19—
Bracket

20—
Bushing
(Spring)

21—
Shock
Absorber ings. See Par.

shackles.
S-6 for service information on U-
S-3.
Pivot
Bolts
Early
model
CJ-3B
is equipped with bronze bush­
ings, pivot bolts, and lubrication fittings. The
bolts
are
secured with castellated nuts and cotter pins.

Late
model
CJ
and DJ models are equipped with

rubber
(silent bloc) bushings, bolts, and locknuts

or
lockwashers and nuts. See Fig. S-2. See Par. S-2 for additional description.
S-4.
Remove
Spring
To
remove a spring, proceed as follows:

a.
Raise
the vehicle with a
jack
under the axle.

Place
a stand
jack
under the frame side
rail.
Then

power the axle
jack
so that the load is relieved from the spring with the wheels resting on the floor.

b.
Remove nuts securing spring clip bolts. Remove
the spring plate and clip bolts.
Free
the spring
from
the axle by raising the axle
jack.

C.
Remove the pivot bolt nut and drive out the pivot bolt. Disconnect the shackle either by re­moving the lower nuts and
bolts
on rubber-bushed

shackles,
or by removing the threaded bushings on

U-shackles
(see Par. S-6).
S-5.
Install
Spring

To
install a
spring,
first install the pivot bolt.
Then,,

connect the shackle using the following procedure:

a.
On bronze-bushed pivot bolts, install the bolt
and
nut and tighten the nut.
Then
back it off two
cotter pin
slots
and install the cotter pin. The nut must be
drawn
up tightly but must be sufficiently

loose
to allow the spring to pivot freely. Otherwise
spring
breakage may result.

b.
On rubber-bushed pivot bolts, install the pivot
bolt and locknut (or lockwasher and nut) only
tightly enough to hold the bushings in position until
the vehicle is lowered from the
jack.

c.
Connect the shackle. On
rubber-bushed
shpckles
install
the
bolts
as in subparagraph b above. For

U-shackles
see Par. S-6 installation instructions.

d.
Move the axle into position on the spring by

lowering
(or raising) the axle
jack.
Place the spring, center bolt in the axle saddle.
Install
the spring

clip
bolts, spring plate, lockwashers, and nuts.
Torque
the nuts 50 to 55 lb-ft. 6,9 a 7,6 kg-m.].

Avoid
over-tightening. Be sure the spring is free to
oscillate at both ends.
e. Remove both
jacks.
On rubber-bushed shackles
and
pivot bolts, allow the weight of the vehicle to
seat the bushings in their operating positions.
Then
torque the nuts to 21 to 30 lb-ft. [2,90 a 4,15 kg-m.]. 346

'Jeep'
UNIVERSAL
SERIES
SERVICE
MANUAL

S
FIG.
S-3—REAR SPRING
AND SHOCK ABSORBER—

EARLY
CJ-3B,
CJ-5 AND

CJ-6

1— Shock Absorber Bracket
2— Mounting Pin Bushing

3—
Washer

4—
Lock
Nut 5— Nut
6—
Rear
Axle Bumper
7— Bolt
8—
"U"
Bolt
9—
Shackle

10—
Retainer

11—
Grease
Seal
12—
Bracket

13—
Threaded
Shackle Bushing
14—
Lube
Fitting
15—
Rear
Spring Assembly
16—
Rear
Spring
Clip
Plate
17—
Lockwasher

18—
"U"
Bolt Nut
19— Pivot Bolt 20—
Rubber
Bushing
21—
Spring
Pivot Bracket
22— Shock Absorber Assembly 11899
S-6. U-Shackles

The
threaded bushings of the U-shackles, used to

early
1957 production, are anchored solidly in the frame brackets and spring
eyes,
and the oscillation
is taken
between
the threads of the U-shackle and
the inner threads of the bushings.
On
early production of Models
CJ-3B, CJ-5,
and

CJ-6,
six bushings are used with right-hand threads

and
two with left-hand threads. The right-hand
threaded bushings have plain
hexagon
heads. The
left-hand bushings have a
groove
around the heads.
The
two left-hand threaded U-shackles are identi­
fied by a small forged
boss
on the lower shank of
the shackle. They are used at the
left
front spring

and
the right
rear
spring with the left-hand thread­
ed end
DOWN
at the spring eye. The left-hand threaded parts have
been
cancelled in the produc­
tion of Models
CJ-3B,
CJ-5 and CJ-6. All later production vehicles, up to early 1957, use all right-

hand
threaded parts.

When
replacing shackles and bushings on
these

vehicles, examine the parts carefully for parts of
the same
type
removed must be reinstalled. A right-hand threaded bushing cannot be installed
satisfactorily after one having left-hand threads
has
once
been
installed.
U-shackles are installed with the bushing
hexagon

heads at the
outside
of the frame.
When
installing a new U-shackle or a shackle bush­
ing,
follow
the procedure outlined
below:

Install
the shackle grease seal and retainer over the threaded end of the shackle up to the shoulder. In-

FIG.
S-4—REAR SPRING AND SHOCK
ABSORBER—
LATE
CJ-3B, CJ-5, CJ-5A,
CJ-6, CJ-6 A, DJ-5,
DJ-6
1—
Bracket

2—
Bushing

3—
Washer

4—
Lock
Nut
5— Nut and Lockwasher 6—
Axle
Bumper 7—Bolt
8—
Spring
Clip

9— Nut and Lockwasher
10— Plate 11—
Bearing

12—
Bracket

13— Bolt
14—
Spring
15— Plate and Shaft
16—
Lockwasher

17— Nut
18—Bolt 19—
Bearing

20—
Bracket

21— Shock Absorber
22— Silent Block Bearing
23—Bolt
24—Nut
25— Side Plate 347

SPRINGS
AND
SHOCK ABSORBERS

10016

FIG.
S-5—SPRING
PIVOT BOLT
FIG.
S-6—FRONT
SPRING SHACKLE
sert the shackle through the frame bracket and eye
of the spring. Holding the U-shackle tightly against
the frame, start the upper bushing on the shackle,
taking
care that when it enters the thread in the
frame it
does
not cross-thread. Screw the bushing
on the shackle about
half
way.
Start
the lower bushing, holding the shackle tightly against the

spring
eye, and thread the bushing in approximate­

ly
half
way.
Then,
alternating from top bushing to
lower bushing,
turn
them in until the head of the bushing is snug against the frame bracket and the bushing in the spring eye is
\{%
[0,794
mm.] away

from
the spring as measured from the inside of hexagon head to the spring.

Lubricate
the bushing and then try the flex of the
shackle,
which must be free. If a shackle is tight it may cause spring breakage and it
will
be necessary
to rethread the bushings on the shackle.
S-7. Shock Absorbers
The
hydraulic, direct-action shock absorbers used
on
these
vehicles are designed to absorb both up­

ward
and downward motion. The upper ends of the shock absorbers are secured to the vehicle frame
side
rails
with mounting brackets and pins. The
lower ends are secured to the springs with pins
which
are an integral part of the spring plates.
Rubber
bushings are installed
between
the mount­
ing pins and shock absorber
eyes.
Movement at the
bushings is taken by flexing of the rubber.
The
rubber bushings and shock absorber
eyes
are
held in place on the mounting pins either by a flat
washer and a cotter pin on Model
CJ-3B,
or by a
flat washer and a locknut on Models
CJ-5, CJ-5A,
CJ-6, CJ-6A,
DJ-5, and DJ-6.

To
remove a shock absorber, first remove the cotter
pins (or locknuts) and washers.
Then
pull
the shock
absorber
eyes
and rubber bushings from the mount­ ing pins.

To
install a shock absorber, first install the rubber
bushings and shock absorber
eyes
on the mounting
shafts.
Then
install the cotter pins or lock nuts.

Tighten
the lock nuts securely.
Squeaking usually occurs when movement takes place
between
the rubber bushings and the metal

parts.
The squeaking may be eliminated by placing
the bushings under greater pressure.
This
is ac­
complished either by adding additional washers where cotter pins are used or by tightening the
locknuts. Do not use mineral lubricant to remove squeak as it
will
deteriorate the rubber.

The
shock absorbers are not refillable and not ad­

justable.
If trouble
develops
the shock absorber must be discarded and replaced with a new one.

If
a shock absorber is removed from the vehicle and

turned
upside down it
will
lose
its prime and be­
come
inoperative. To
test
a unit, hold it in an up­

right
position and work the plunger up and down
the
full
travel four or five times to determine
whether action is positive or faulty.

Note:
The shock absorber stem is smoothly ma­
chined to work through a tight seal in the upper
end of the piston. Do not roughen the stem with

pliers
or similar tool during removal or installation
as this
will
destroy the
effectiveness
of the seal. 11883

FIG.
S-7—FRONT
SPRING SHACKLE (Up
to early 1957)
348

•Jeep'
UNIVERSAL SERIES SERVICE
MANUAL

S-8.
SPRING SPECIFICATIONS

TYPE
Longitudinal
Leaf
DRIVE
THROUGH
Springs
SPRING TYPE
Semielliptical

MODEL;
F4
ENGINE CJ-3B CJ-5 CJ-6
FRONT SPRINGS:

Width...

REAR
SPRINGS:
Width

Spring
Rate
10
3634" [92,08 cm.]
\W
[4,45 cm.]
260 lbs. per in.
9

42"
[106.68 cm.]
l%"
[4,45 cm.] 190 lbs. per in.
7

395**
[100,65 cm.]
1&"
[4,45 cm.]
240 lbs. per in.
9

46J*#
[117,16 cm.]
IW
[4,45 cm.]
200 lbs. per in.
7

395*"'
100,65 cm.]
l%"
[4.45 cm.]
240 lbs. per in.
9

46}*"
1117,16 cm.]
l%"
[4,45 cm.]
270
lbs.
per in.

MODEL:
V-6
ENGINE
C
J-5A, CJ-6 A
CJ-5, CJ-6 DJ-5,
DJ-6

FRONT SPRINGS:
Number
of
Leaves

Width.....

Spring
Rate

REAR
SPRINGS:

Width

Spring
Rate
6

395*"
[100,65 cm.]
1%"
[4,45 cm.]
260 lbs per in.

5
46H"
[117,16 cm.]
\W
K,45
cm.]
230 lbs.
r»er
in. 10

39%"
[100,65 cm.]
IW
[4,45 cm.]
176 lbs. per in.

5

46
H"
[117,16 cm.]
IW
[4,45 cm.]
230 lbs. per in.
5

395**
[100,65 cm.]
1%"
[4,45 cm.]
188 lbs. per in.

5

463*"
[117,16 cm.]
1%"
[4,45 cm.]
230 lbs. t>er in.
S-9.
SHOCK ABSORBER SPECIFICATIONS

TYPE
Hydraulic
ACTION
Double

MODEL:
CJ-3B CJ-5, CJ-5A, CJ-6, CJ-6A
DJ-5,
DJ-6

FRONT SHOCK ABSORBERS:

Length:
"
[27,31 cm.]

Compressed
"
[27,31 cm.]

llj*i"
[29,05 cm.]

Extended
*
[44,45 cm.]

1%W
[46,83 cm.]

Piston Diameter
I" [2,54 cm.]
1* [2,54 cm.]

REAR
SHOCK ABSORBERS:

Length:
Compressed
10H
[27,31 cm.]

11%*
[30,32 cm.]

Extended
17H"
[44,45 cm.]
19j*j"
[43,37 cm.]

Piston Diameter
1"

[2,54 cm.] 1" [2,54 cm.]
349

'Jeep'
UNIVERSAL
SERIES
SERVICE
MANUAL

T
BODY

Contents

SUBJECT
PAR.

Brake
and
Clutch
Pedal Pads T-7

Canvas
Tops T-5
Care
of
Fabric
Tops. : T-6

Front
Seat Adjustment. . . T-8
Passenger Seat Safety
Catch
. .T-9
Windshield
T-2, T-3

Windshield
Glass and Weatherstrip T-4

T-1.
GENERAL
The
body
is of
all
steel construction with mountings
that provide a secure attachment to the frame.

All
major panels are of No. 18
gauge
steel. All
open

edges
of the panels are turned under, reinforced

and
flanged to provide strength. These panels are reinforced with
"U"
sections
and welded. All com­

ponent
panels are seamed and welded
together.
The
body
is insulated from the frame with insulator shims placed
between
the
body
and frame and
held in position by the
body
bolts.

The
instruments and controls, mounted on the
instrument panel are within clear view and easy
to reach.

Note:
A new floor pan cover plate has
been

released on late CJ-5 and CJ-6 models, that is
identified by a stamped oval-shaped bubble or
relief, located to the right of the accelerator treadle.
FIG.
T-l—MODEL CJ-3B BODY
1—
Rear
Passenger Seat 8—Front Passenger Seat

2—
Left
Side
Panel
9—Right Side
Panel

3—
Driver's
Seat 10—Spare Wheel
Bracket

4—
Rear
View
Mirror
11—Right
Tail
Gate
Chain

5—
Windshield
12—Tail
Gate

6—
Cowl
13—Left
Tail
Gate
Chain
7— Step
351

BODY

10728

FIG.
T-2—WINDSHIELD
—
CJ-3B

1—
Windshield
Assembly
2—
Filler
Strip

3—
Weatherstrip 4—
Windshield
Glas3

5—
Screw

6—
Clamp
7—
Screw
and Lockwasher
8—
Screw
r
9— —Weatherstrip

Floor
pan
noise
on early CJ-5 and CJ-6
models
may be corrected by installing the new floor pans.
T-2.
Windshield

•
Model
CJ-3B
The
entire windshield and frame assembly may be
lowered down on top of the hood.
This
is accom­ plished by unlatching the retaining catches mount­
ed on the cowl
above
the instrument panel. When lowered do not
fail
to strap it down with the strap provided which is mounted at the top of the

radiator
guard.

A
stationary
type
windshield is used on all vehicles
equipped with
soft
or canvas
tops.
A hinged ven­ tilator mounted in the center of the panel directly
under the
glass
is provided for ventilation. The

glass
is installed in the same manner as on Models
CJ-5,
and
CJ-6.

Vehicles equipped with metal enclosure employ a
stationary windshield which is the same as that used with the canvas top
except
that it has a higher

silhouette
and is wider.
Glass
installation is the same as
CJ-5,
CJ-5
A, CJ-6,
and
CJ-6
A.

T-3.
Windshield
»
Model
CJ-5, CJ-5A, CJ-6, CJ-6A,
DJ-5, DJ-6

The
windshield and frame may be lowered to the

hood
by unlatching the two clamps at each side
of the windshield. When in the lowered position, always secure the windshield by passing the strap
at the top of the windshield through the
loop
on the
hood
and drawing the strap up firmly.
To
remove the windshield from the
body
on early
models, first,
pull
the windshield wiper vacuum
hose
352