1953 JEEP DJ suspension

B
LUBRICATION B-3.
SERVICE
MAINTENANCE
SCHEDULE

Perform
the following operations at the mileage shown. Two thousand miles equals
3,200
km.

SERVICE
MAINTENANCE
SCHEDULE

OPERATION
VEHICLE
^ n>
MILEAGE
IN
THOUSANDS

6 8 10 12 24 30
Check Wheel Nut Torque*
Check
Fluid
Level
in Battery X Check
Fluid
Level
in Brake Master Cylinder0. X
Service
Cooling
System X Service Tires X

Lubricate
Distributor
Cam Lubricator (F4-134) X
Lubricate
Steering Linkage X

Lubricate
Propeller Shaft Universal Joints X

Lubricate
Propeller Shaft
Slip
Joints ; X
Lubricate
Tie Rod and Drag
Link
Sockets................................... X Change Engine
Oil
and
Filter,
and Service Air Cleaner (F4 134 Engine)** X
Change Engine Oil and
Filter,
and Service Air Cleaner (V6-225 Engine)**....
Check Brake Operation and Pedal
Free
Play X Check
Clutch
Pedal
Free
Play. .... X
Check all
V-Belt
Tensions X
Check Exhaust Emission System
(If
so equipped)*** \ X
Service Positive
Crankcase
Vent
Valve
and Breather . .' X
Road Test
Including
a Check of all Instrument
Lights
and Controls X Tune-up Engine
Check Operation of
Manifold
Heat
Control
Valve

Clean
Exterior of Radiator

Align
Headlights • Check Brake
Linings
,
Check Exhaust System for Leaks Replace Canister Air
Filter
(F. E. E. C. System)
Check
Axle
U-Bolt
Torque. Check Lubricaunt
Level
of Front
Axle
Universal Joints
Check Shock Absorber Mountings and Bushings Check Front and
Rear
Spring Bushings

Lubricate
Distributor
(V6-225).
Replace Spark, Plugs
Check Charging and Starting Circuits
Lubricate
Tailgate Latch, Supports and Hinges.

Lubricate
Door and
Hood
Hinge Pivots ;
Lubricate
Glove Compartment Door Latch

Lubricate
Heater Controls •

Lubricate
Windshield
Wiper and Washer Controls
Clean,
Repack and
Adjust
Wheel Bearings
Change Transmission and Transfer Lubricant. .
Replace
Dry-Type
Air Cleaner • Check Lubricant
Level
of
Differential

Lubricate
Transfer
Case
Shift
LeArer
Control
C«se.
. , . . . . . . . .
Continuing
each
2,000 miles

Continuing
each
6,000 miles

Continuing
each
24,000 miles

X
Continuing
each
30,000 miles
•Check after the
first
200 miles [320
km.
J
of operation.
If
wheel or wheels are changed for any
reason,
have
wheel nut torque rechecked after an additional two hundred miles of operation
••Service mileage shown or every 60 days, whichever occurs
first.

•••Maintenance check on emission system must be performed per
information
in this manual. "See text for brakes.

"Nj
^Miles
2,000
6,000
12,000
18,000
24,000
30,000
Kilometers

3,200
9,600
19,200
28,800
38,400 48,000

B-9.
Engine Oil

For
maximum
engine
protection under all driving conditions encountered during the recommended

oil
change intervals, it is necessary to use only

"MS"
certified
sequence-tested
oils. The term
"MS"
must appear on the oil container singly or

in
conjunction with other designations. "MS" des­
ignated oils are heavy-duty detergent oils that are
formulated to withstand all service conditions in
modern powerplants. Engine oils designated only
as
"ML"
and/or
"MM"
are not recommended and should not be used except in an emergency when

"MS"
oil is not available. Certified
sequence-tested

engine
oils are described on their containers by

such
phrases as:
meets,
exceeds,
excels, or has
proven superior in the
test
requirements,
test
sequences, MS Service
tests,
standards, and service

requirements,
of automotive manufacturers, auto­
makers,
or car manufacturers for MS service or
Service
MS.
It
may be necessary to change
engine
oil more
frequently than normally recommended, depending upon the type and quality of oil used, the severity
of operation conditions, if the
engine
is used for
short
periods in cold weather, or if the
engine
is allowed to idle for excessive periods.

Always
drain
the crankcase while the
engine
is hot since
dirt
and contaminants are then more
likely
to be held in suspension and therefore
will

drain
out more completely.
Drain
the crankcase as follows:

a.
Position the
drain
receptacle under the
drain

plug.

b.
Remove the
drain
plug using the correct size

wrench.
Be careful of hot oil.
c.
Carefully
clean the
drain
plug. Inspect and

replace
the gasket, if deteriorated.
d.
When the oil has drained, replace and tighten
the crankcase
drain
plug. 12

'Jeep'
UNIVERSAL
SERIES SERVICE
MANUAL

O Note:
If the steering-gear-to-frame
bolts
are not

properly
torqued, they
will
eventually
loosen
dur­

ing operation of the vehicle. Loose
bolts
will
result
in
elongated
bolt
holes
making maintenance of bolt torque difficult, and may allow position of the
steering columns to be misaligned. Therefore,
proper
torquing is extremely important.
Do not tighten the steering gear to dampen out
steering trouble. Adjust the steering gear only to
remove lost motion or play within the unit.
0-5. Steering
Gear
Adjustment
The
cam and lever steering gear is illustrated in

Fig.
0-2. It consists of a
spiral
cam, and a cross shaft and lever assembly with two lever studs.
When
the steering wheel is turned, the cam
moves

the studs, causing rotary movement of the cross
shaft, which in
turn
causes angular movement of
the*steering arm.

Two
adjustments of the steering gear are necessary:
up and down play of the steering shaft, and adjust­ment of the lever studs (tapered pins) in the

cam
groove.

Adjustment
of the
ball
thrust bearings to eliminate up and down play of the steering shaft is ac­
complished by removing shims which are installed
between
the steering gear housing and the upper
cover. Before making this adjustment
loosen
the
housing side cover adjusting screw to free the pins
in
the cam groove. Loosen the housing cover to
cut and remove a shim or more as required.
Install
the screws and tighten. Adjustment should be
made to have a slight drag but allow the steering
wheel to
turn
freely with thumb and forefinger
lightly gripping the rim.

Shims
installed for adjustment are .002*, .003", and .010"
[.0508,
.0762
and .254 mm.] in thickness.

Adjustment
of the tapered pins in the cam
groove

is accomplished by adjusting screw. Unlock the

adjusting
screw and
turn
it in until a very slight
drag
is felt through the mid-position when turning
the steering wheel slowly from one extreme position
to the other.

Backlash
of the pins in the
groove
shows up as
end play of lever shaft, also as backlash of steer­ ing arm.

The
cam
groove
is purposely cut shallow in the

straight
ahead driving position for each pin.
This

feature permits a
close
adjustment for normal

straight
ahead driving and provides precision steer­ ing and permits take up of backlash at this point
after the wear occurs without causing a bind else­

where.
Always
adjust within the high range through
the mid-position of pin travel. Do not adjust off
"straight
ahead" position.
Backlash
in turned posi­
tions is not objectionable.
0-6.
Front
Wheel Alignment Adjustments
To
ensure correct alignment, a definite procedure
for inspection of the steering system is recom­ mended. It is
suggested
that the following sequence
be used:

a.
Equalize
tire pressures and level vehicle.
b.
Check
steering gear to steering column align­
ment.

c.
Inspect steering knuckle pivots, spindle, and
wheel bearing
looseness.

d.
Check
wheel runout.

e.
Test wheel balance and bearing adjustment.
f.
Check
for spring sag.
g.
Inspect brakes and shock absorbers.

h.
Check
steering gear assembly adjustment and
steering connecting rod.

i.
Check
caster,

j.
Check
toe-in.
k.
Check
toe-out
on turns.

I.
Check
camber.

m.
Check
tracking of front and
rear
wheels,

n.
Check
frame alignment.

The
factors of alignment, caster, camber, and toe-
in,
are all interrelated and if one adjustment is
made, another adjustment may be affected.
There­

fore, after an alignment job is completed, make a
complete recheck of all the adjustments to be sure
the
settings
are within the limit. Be sure all front
suspension and steering system nuts and
bolts
are

all
properly torqued before taking wheel alignment readings.

Proper
alignment of front wheels must be main­
tained in order to ensure
ease
of steering and satis­factory tire life.

The
most important factors of front wheel align­ment are wheel camber, axle caster and wheel
toe-in.

Wheel
toe-in is the distance the wheels are closer

together
at the front than at the
rear.
Wheel
camber is the amount the wheels incline out­

ward
at the top from a vertical position.
Front
axle caster is the amount in
degrees
that the
steering pivot pins are tilted towards the front or

rear
of the vehicle. Positive caster is inclination of
the top of the pivot pin towards the
rear
of the ve­

hicle.
Zero caster is the vertical position of the
pivot pin. Negative or reverse caster is the in­
clination
of the top of the pin towards the front
of the vehicle.

These
points should be checked at regular inter­
vals,
particularly when the front axle has been
subjected to a heavy impact. When checking wheel alignment, it is important that wheel bearings and

knuckle
bearings be in proper adjustment. Loose bearings
will
affect instrument readings when

checking
the camber, pivot pin inclination and
toe-in.
To
accurately check camber and caster, use a wheel
aligning fixture.
Camber
and caster of the front
wheels are both preset.
Camber
cannot be altered
but caster can be adjusted by installing caster shims
between
the axle pad and the springs. Wheel toe-in
may
be adjusted. To measure wheel toe-in, use a
wheel aligning fixture or follow the procedure given
in Par.
0-8.
0-7.
Front Wheel Toe-in
Toe-in
as illustrated in
Fig.
0-3, is necessary to
off­

set the
effect
of camber as shown in Fig. Q-4. 315

u

MISCELLANEOUS
U-14.
SPECIAL
CHASSIS
TORQUE
SPECIFICATIONS

CHASSIS:
Pounds
-
Feet
j kg-m.
Brake
Backing Plate Bolts.
25-35 ! 3,4 a 4,8
Clutch
and
Brake Pedal Shaft Hugnut
25-40 3,4 a 5,5

Differential
Carrier
38-42 5,2 a 5,8

Engine
Front Insulator
to
Frame.
10-15 1,4 a 2,1

Engine
Rear
Insulator
to
Crossmember Bolt.
. . ... 20-30 2,8 a 4,1
Engine
Rear
Mounting Bracket
to
Transmission Bolt.
20-30 2,8 a 4,1

Pressure
Plate
to
Flywheel Bolts
12-17 1,7 a 2,3

Propeller Shaft
and
Universal Joint Flange Bolt
25-45 3,4 a 6,2

Propeller Shaft
and
Universal Joint U-Bolt
1 13-18 : 1,8 a 2,4
Rear
Axle Shaft
Nut 150
Minimum
; 20,8
Spring
Mounting
—
Front
and
Rear
U-Bolt
V^n [11,11 mm.] 32-46 i 4,5 a 6,3
Spring
Mounting —-
Rear
U-Bolt
— [12,7 mm.] 45-65 6,2 a 9,0

Spring
Pivot Bolts
." 25-40 3,4 a 5,5

Steering Arm
to
Gear
Nut
(Ross)
..
i
70-90 9,7 a 12,4

Steering Arm
to
Gear
Nut
(Saginaw)
' 120-160 16,6 a 22,1

Steering Knuckle
and
Arm Nut..........
55-65 j 7,6 a 9,0

Steering Bellcrank Bolt
Nut 14-19 < 1,9 a 2,6

Steering Knuckle Seal Retainer Bolts
S 10-15 1,4 a 2,1
Steering Knuckle Support
to
Knuckle Arm
to
Wheel Spindle Bolt
45-55 , 6,2 a 7,6

Steering Mounting
to
Frame
—
Y%
[9,53 mm.] 30-40 '• 4,1 a 5,5

Steering Mounting
to
Frame
— W [11,11
mm.]...
i 45-55 6,2 a 7,6

Steering
Tie Rod
Clamp Bolts
— [7,94 mm.] 10-15 1,4 a 2,1

Steering
Tie Rod
Clamp Bolts
— Ke" [U,H mm.] ; 35-45 , 4,8 a 6,2

Steering Wheel
Nut 32-38 1 2,7 a 5,2

Transmission
Mainshaft
Nut 130-170 18,0 a 23,5
Wheel
to Hub
Bolts
65-90 9,0 a 12,4
Spring
Mounting
—
Suspension Bolts
(All) , 65-80 9,0 a 11,0

Body Hold-Down Bolts
— W [11,11 mm.} 25-30 i 3,4 a 4,1
—
W [12,7 mm.l , . . 45-50 I 6,2 a 6,9

U-15.
CHASSIS
AND
BODY
BOLT
TORQUE
CHART
Note:
Applies to all applications not listed.

Bolt Size Pounds
-
Feet
kg-m.

.....
[6,35 mm.] 4-8
0,6-1,1

[7,94 mm.] 8-15
1,1-2,1

[9,53 mm.] 18-30

2,5-4,1

"Mrl4.
[11,11 mm.]
27-45
3,8-6,2
116-20. [11,11 mm.] 32-46
2,7-6,3
M-13.
[12,7
mm.]
40-60
5,5-8,3

H-20
[12,7
mm.]
48-62
6,7-8,5

%-12.
[14,29 mm.]
48-80
6,7-11,0

%-lB.
[14,29 mm.]
57-86
7,9-11,9
5A-n. [15,88 mm.]
75-140
10,4-19,4
[15,88 mm.] 87-152
12,0-20,9

U-io.
[19,05 mm.]
126-192
17,4-25,5

§4-16.
[19,05 mm.]
150-184
20,7-26,5

Vs'9..
[22,23 mm.]
215-290
29,7-40,1

K-14.
[22,23 mm.]
255-290
35,3-40,1
1-8 [25,4 mm.] 300-430
41,5-59,5
1-14. . [25,4 mm.]
300-390 41,5-54,0 364