oil level JEEP CJ 1953 Service Manual

'Jeep*
UNIVERSAL SERIES
SERVICE
MANUAL

B
LUBRICATION
AND
PERIODIC SERVICES

Contents
PAR. SUBJECT
PAR.
SUBJECT

GENERAL
.B-l
Chassis
Lubrication
B-7
Engine
Lubrication System B-4, B-6

Special
Lubricants B-2

Fresh
Lubricant.
.B-3

LUBRICATION CHARTS
. Pages 8, 9

SERVICE
MAINTENANCE SCHEDULE.
.B-8
Air
Cleaner
B-2
5,
B-2
6
Air
Filter
—
F.E.E.C.
System Canister
B-2
4

Axle
U-Bolts B-49 Body
Lube
Points: B-65 Hood Hinge Pivot Points B-66

Glove
Compartment Door
Latch
B-6
7
Tailgate Hinges .B-68

Brakes,
Adjust .B-41
Brake
Linings .B-42

Brake
Master Cylinder B-40
Charging
Circuit
B-l9
Clutch
. B-43, B-44
Cooling System—Radiator. B-28, B-29 Differentials
........
.B-50, B-51, B-52, B-53

Distributor
B-14, B-l5

Engine
Oil B-9
Engine
Oil
Filter
B-10, B-ll

Engine
Tune-Up B-20
Exhaust
Emission Control System
B-2
2

Exhaust
Manifold Heat Control Valve. . . .B-l2

Exhaust
System
B-2 3
Fan
Belt . .B-21
Front
Axle U-Joint B-54, B-55

Generator
.B-16
Headlights B-61
Heater Controls B-62
Lights
and Controls B-59 Positive Crankcase Ventilation Valve. . . .B-l3
Shock Absorbers B-48
Spark
Plugs. B-17
Speedometer Cable. .B-60

Spring
Bushings.. . .B-46

Spring
Shackles .B-47
Steering
Gear
B-2 7
B-l. GENERAL
All
'Jeep' Universal vehicles require periodic
lubri­

cation and other maintenance services for normal
vehicle
usage
and application to promote satis­ factory operation and prevent
excessive
wear. Un­
der severe operating or atmospheric conditions
these
services should be performed more
often
than
under normal conditions. It should also be remem­
bered that common short trips and
stop-and-go
driving
are more severe on lubrication
points
than
Starting
Circuit
B-l8

Tie
Rod and Drag
Link
Sockets
.
B-45

Tires
B-64

Transmission
and Transfer Case—
Lubricant
Level
Check B-30

General
B-31

Transfer
Case B-32
Transmission
.B-33

Transmission
and Transfer
Case
—

Lubricant
Change .B-34
General
.B-35

Transfer
Case B-36
Transmission
B-3
7, B-38

Transfer
Case Linkage B-39

Universal
Joints and Slip Joints.
.......
.B-58

Wheel
Bearings..
.........
. . .B-56, B-57
Windshield
Wiper and Washer B-63

LUBRICATION
OF

OPTIONAL EQUIPMENT
B-69
Centrifugal
Governor. .B-71
Pintle Hook .B-70

Powr-Lok
or
Trac-Lok
Differential B-72

PARTS REQUIRING
NO LUBRICATION.
. . .B-73

Alternator
Bearings. B-76
Clutch
Release Bearings.
.............
.B-74
Shock Absorbers B-78
Springs
B-7
7
Starter
Motor Bearings B-75

Water
Pump Bearings B-74

LUBRICATION REQUIREMENTS FOR OFF-HIGHWAY OPERATIONS
B-79

Air
Cleaner B-82

Chassis
Lubrication
B-83

Engine
Oil B-80
Engine
Oil
Filter
B-81
Differentials .B-86
Front
Axle U-Joints. B-84
Transfer
Case and Transmission .B-85
constant
speed
driving on highways, and even more
intensified in extreme cold or hot weather; there­ fore, vehicles driven under
these
conditions must
be lubricated and serviced more
often
than nor­ mally operated vehicles. The specifications of
types
and
amounts of lubricant given in the Lubrication

Chart
and
text
of this section should be closely
followed. The off-highway operation lubrication
notes,
given in the last part of the section, should
be followed when applicable. 7

B

LUBRICATION
B-2.
Special Lubricants

Special
lubricants are required for certain
lubri­
cation points on the 'Jeep' Universal vehicles. The

special
lubricants are necessary for proper function­ ing and maintenance of the vehicle. The
Lubrica­
tion
Chart
(Fig. B-l and B-2)
designates
the spe­
cial
lubricating points and identifies them by type

or
part number.

B-3.
Applying
Fresh
Lubricant

When
servicing or lubricating the vehicle, it is important that all old lubricant and
dirt
be re­ moved from the fitting and/or plugs before servic­
ing and that the recommended type of lubricant be used for the particular item being serviced.
Force
lubricant through the lube fittings until the lubricant being forced out of the joint is fresh

lubricant,
indicating that all old lubricant has
been removed.

B-4.
Engine
Lubrication
System —
Hurricane
F4 Engine

•
Refer to Fig. B-3.

The
engine
oil pressure system is designed to pro­
vide adequate lubrication to all working parts of
the engine. The gear-type oil pump is driven from
the
engine
camshaft. The pump is provided with a
FIG.
B-3—ENGINE
LUBRICATION
SYSTEM
—

HURRICANE
F4
ENGINE
floating, screened intake that prevents the
circula­

tion of any sediment that might accumulate in the

oil
pan. By means of this pump, the main bearing

journals
and crankpins are efficiently lubricated through an oil gallery and passages in the cylinder
block.
Oil
is forced under pressure to the main bear­
ings and through the cheeks of the crankshaft to
the connecting rod bearings. Oil is also force-fed
to the camshaft bearings, timing gears, and intake valve rocker arms. The oil pressure is controlled by

relief
valve located in the oil pump. The valve is
designed to open when excessive pressure
develops
in
the system, relieving the pressure and returning the
excess
oil to the oil pan. The cylinder walls,
piston pins, and tappets are supplied with oil from
spurt
holes
in the connecting rods. A portion of the oil is continually passed through an oil filter
which
effectively removes any foreign matter sus­ pended in the oil. A flanged section on the
rear
of
the crankshaft acts as an oil slinger and, in com­
bination with the
rear
main bearing upper and lower oil seal, prevents the leakage of oil from the

rear
end of the cylinder block. Leakage of oil from
the front end of the cylinder block is controlled by the crankshaft oil slinger and the front oil seal
installed in the timing gear cover. The oil pressure
indicator
light in the instrument panel and the oil level
gauge
or dip stick in the side of the
engine

provide a means for checking the oil pressure and

oil
level.

B-5.
Oil Pressure Gauge or Indicator
On
early
CJ-3B
vehicles an oil pressure
gauge
is
mounted on the instrument panel.
This
gauge
in­ dicates the oil pressure within the
engine
lubri­

cating system.

On
Models
CJ-5,
CJ-5A,
CJ-6,
CJ-6A,
DJ-5, DJ-6

and
later production vehicles of Model
CJ-3B
a
red
telltale lamp, which operates when the ignition
switch is turned on, is lit when there is insufficient
oil
pressure to properly lubricate the engine. When

it
goes
out, operating pressure is achieved. In
normal
operation, the light is lit when the ignition
is first turned on. It
goes
out after the vehicle is

in
motion.

Failure
of the
gauge
or indicator to register normal
oil
pressure may indicate insufficient supply of oil

in
the
engine
crankcase, low or no oil pump pres­
sure,
or a fault in the
gauge
or indicator electrical

circuit.
The
engine
must be stopped immediately to prevent possible damage to
engine
bearings and
the fault corrected before restarting the engine.

B-6.
Engine
Lubrication
System — Dauntless V-6 Engine

The
engine
lubrication system (Fig. B-4) is the
force
feed
type in which oil is supplied under pres­

sure
to the crankshaft, connecting rods, camshaft bearings and valve lifters. Oil is supplied under con­trolled volume to the rocker arm bearings and push

rods.
All other moving parts are lubricated by gravity flow or splash.

The
supply of oil is
carried
in the oil pan which is filled through a filter opening in the right rocker

arm
cover. A removable oil
gauge
rod on the left side of the crankcase is provided to check oil level.

The
oil pump is located in the timing chain cover 10

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

LUBRICATION

vital
to the life of the
engine.
When the vehicle
is operated under abnormal conditions, (for ex­
ample when driven on secondary roads or through
fields) then service of the air cleaner must be more frequent

Note:
Under extreme continually dusty and dirty
conditions where the vehicle operates in clouds of dust and
dirt,
service the air cleaner daily.

a.
To service the air cleaner on vehicles equipped
with the
Hurricane
F4
engine
(Fig. B-5) unscrew
the eye
bolt
on the oil cup clamp and remove the

oil
cup from the cleaner body. Remove the oil from the cup and scrape all
dirt
from the inside, wash cup clean using a cleaning solution if neces­

sary.
In summer
refill
the oil cup with IV2 pints [0,6 ltrs.] of
SAE-40
or 50 grade
engine
oil. In
winter
refill
using grade
SAE-20
engine
oil. For
servicing the air cleaner
body
(less
oil cup),
loosen

hose
clamp and remove
hose
from the cleaner. Detach breather
hose
from the fitting on the cleaner. Remove the two wing screws and lift the
cleaner from the vehicle. Agitate the cleaner
body

thoroughly in cleaning solution to clean the filtering

element.
Dry
element
with low pressure com­ pressed air. Reinstall the cleaner
body
and replace
the oil cup. Service the air cleaner every
2000
miles
[3.200
km.].
b. To service the oil bath air cleaner on vehicle
equipped with the Dauntless V-6
engine
(Fig. B-6),

first
remove the air cleaner from the carburetor
by unscrewing the wing nut. Remove the oil cup
FIG.
B-5—OIL
BATH AIR
CLEANER
-
HURRICANE F4 ENGINE 1—
Horn
7—Clamp
2—
Flexible
Connector
8—Oil
Cup
3—
Hon
Clamp
9—Clamp

A—Carburetor
Vent Tube 10—Hose 5— Body 11—Clamp
6—
Screw
and
Lock
Washer 13—Gasket
FIG.

B-6—OIL BATH AIR
CLEANER
-
DAUNTLESS V-6 ENGINE

1—WinB
Nut
2—
Cover

3—
Rubber
Gasket
4—
Cork
Gasket
5—
Oil
Cup 6—
Breather

7—
Clamp

8—
Vent
Tube 9—
Air
Pump Hose from cleaner
body
and remove the oil from the cup,
scrape all
dirt
from the inside.
Clean
oil cup thor­
oughly, wash filter
element
in a solvent that
will
leave it clean and dry.
Fill
oil cup to indicated
level with clean
S.A.E.
40 or 50 grade
engine
oil
(S.A.E.
20 grade in winter.) Assemble cleaner filter

element
to oil cup making sure that gasket is in
place
between
the two pieces. Assemble air cleaner assembly to carburetor making sure the gasket
be­

tween
air cleaner and carburetor is in place. Secure

air
cleaner to carburetor with wing nut. Service the

air
cleaner every
6000
miles
[9.600
km.],
c.
Carefully
check the
hose
clamps and
fittings
on
the breather
hoses
at frequent intervals. Loose con­nections
will
affect proper operation of the
crank­

case ventilating system.

B-26. Dry-Type
Air Cleaner Service the air cleaner on Dauntless V-6
engines

at each oil change under normal driving conditions.

If
the vehicle is operated under dusty conditions,
check the condition of the air cleaner
element
more
frequently and service if dirty.

Servicing
the air cleaner consists of cleaning or replacing the air cleaner
element
and replacing the

crankcase
ventilation filter (breather assembly). See Fig. B-7.

The
air cleaner
element
assembly consists of a
paper
element
and a polyurethane
element
The
paper
element
cannot be cleaned.

To
clean the polyurethane
element,
first carefullly remove it from the paper
element
Then
wash it in 14

'Jeep*
UNIVERSAL SERIES SERVICE
MANUAL

B
solvent.
Wrap
the polyurethane element in a clean

dry
cloth and
squeeze
to remove all possible sol­
vent. Do not wring the element or it may
become
torn.
After cleaning, oil the polyurethane element

liberally
with
engine
oil
(SAE
10W30) and
squeeze

to evenly distribute the oil through the element and to remove
excess
oil. The element should be damp

with
oil, not dripping.
Install
the polyurethane element on the paper element, taking care to have
edges
of the polyurethane element over the plastic end plates of the paper element.

Replace
the complete air cleaner element assembly every
24,000
miles
[38.400
km.]. Replace more
frequently if there is any apparent damage or evidence of plugging.

The
crankcase ventilation filter should be replaced, not cleaned, every
6,000
miles
[9.600
km.]. The
filter
is located inside the air cleaner housing.
12992

FIG.
B-7—DRY-TYPE
AIR
CLEANER DAUNTLESS
V-6
ENGINE

1—
Crankcase
Ventilation
Filter

2—
Polyurethane
Element

3—
Paper
Element
B-27.
Steering
Gear

Check
that the steering gear lubricant is at the
level of the fill-hole. If not, add lubricant to the
level of the fill-hole with the lubricant recom­ mended in the
Lubrication
Specifications. If abnor­

mally
low, check the steering gear for possibility
of leaks.

B-28.
Cooling System
Check
the coolant level in the
radiator.
It should be

half
an inch below the neck. If not,
fill
the radiator
to
half
inch below the neck with the proper coolant.

Refer
to Section G.

If
the level of the coolant is abnormally low, check
the radiator,
hoses
and water pump for possible
leaks.
If a leak is suspected, refer to Section G.

B-29.
Clean
Exterior
of Radiator

For
proper cooling efficiency the radiator should be cleaned of foreign objects. Refer to Section G.

B-30.
Transmission
and
Transfer Case
Lubricant
Level
Cheek

•
Refer to Par. B-31 through B-33 as applicable.
B-31.
General

All
transfer cases and transmissions should be

serviced
separately even though drilled passages
are
provided for oil circulation
between
some
trans­
mission and the transfer case housings. Procedure

from
the appropriate Par. below should be fol­ lowed to check the lubricant level of the various

types
of transfer cases and transmissions.
If
the transfer case or transmission fluid levels
are
found to be abnormally low, check both units
for any possible leaks.

B-32.
Transfer
Case
:

The
transfer case fill-hole is located on the right side of the transfer case housing. To check the
lubricant
level, remove the
fill
plug.
Lubricant

should be level with this fill-hole. If not, bring up to level by adding make-up lubricant as specified

in
the
Lubrication
Specifications.

B-33.
Transmission

The
transmission fill-hole is located on the right side of the transmission housing. To check the
lubricant
level, remove the
fill
plug.
Lubricant

should be level with this fill-hole. If not, bring
up to level by adding make-up
lubricant
as specified
in
the
Lubrication
Specifications.

B-34.
Transmission and Transfer
Case
Lubricant
Change

•
Refer to Par. B-35 through B-37 as applicable.

B-35.
General

Transfer
case and transmission lubricants should
be changed at the same time.

B-36.
Transfer
Case

To
drain
the transfer case, first remove the transfer
case fill-hole plug and then the transfer case
drain-

hole
plug. Let all fluid
drain
from case.
Then
install
the transfer case drainhole plug, and
refill
the
transfer
case through the fill-hole using the correct

lubricant
as specified in the
Lubrication
Specifica­
tions.

At
30,000
mile
[48,000
km.] intervals lube the

transfer
case shift levers with
Lubriplate
No.
130AA.
Late
models have a lube fitting. To lube
older models, (without lube fitting) remove the

bottom
cover of the case, clean thoroughly and
pack
case
full
of lubricant.

B-37.
Transmission (3-Speed)

To
change the lubricant on all vehicles equipped

with
a three speed synchromesh transmission,
drain

the old fluid by first removing the fill-hole plug

and
then removing the drainhole plug. Since on

some
transmissions there are drilled passages be­ tween the transmission and transfer case that allow

oil
to circulate
between
the two units, the transfer
case should be drained before refilling the trans­

mission.

When
all the fluid is completely drained, replace
the drainhole plugs only. For the correct specifi­
cations and quantity, refer to the
Lubrication
Specifications. 15

B

LUBRICATION
Note:
Hard
shifting of the transmission gear in
cold weather is a positive indication that the
lubri­

cant
is of the wrong viscosity or of poor quality

which
allows it to congeal.

B-38.
Optional
4-Speed
Transmission
and
Transfer Case

The
four-speed transmission and transfer case re­

quire
separate lubrication for each unit as
they
have no cross-over oil passage. At each transmission
service check, the
fill
plugs of
both
four-speed

transmission
and transfer case should be pulled
and
the lubricant refilled to level if necessary.

B-39.
Transfer
Case
Linkage

The
transfer case shift linkage should be lubricated

periodically.
All
bearing surfaces that are assembled
with
studs and cotter pins should be disassembled, cleaned, and coated with a
good
waterproof grease.

The
bearing surfaces that cannot be disassembled
should be lubricated with a lubricant that
will
penetrate the bearing
area.
These bearings include
the two on the cross shaft assembly and the
threaded stud.

The
type
of penetrating lubricant recommended is
DuPont
"PM 7", No. 2911, or its equivalent.

B-40.
Brake Master Cylinder

Clean
the top of the
fill
cap and also the housing

area
around it. Remove the cap and observe the
fluid
level. It should be
half
an inch
below
the top
of the fill-hole. If not, add brake fluid to
half
inch
[1,3 cm.]
below
the top of the fill-hole. Use
only heavy-duty brake fluid conforming to speci­
fication
SAE-J-1703.
Be sure to handle the brake

fluid
in clean dispensers and containers that
will
not introduce even the
slightest
amount of other

liquids
or foreign particles. Replace and tighten
the
fill
cap.

B-41.
Adjust Brakes

Refer
to Section P.
B-42.
Brake Linings

Refer
to Section P.

B-43.
Adjust Clutch

Refer
to Section I.

B-44.
Clutch Cross Shaft (Lever Type)

Lubricate
the clutch cross shaft in accordance with
specifications given in the
Lubrication
chart: see
Item
1. Chassis Bearings.

B-45.
Tie Rod and Drag
Link
Sockets

The
tie rod and drag
link
sockets
are equipped

with
lubrication
fittings
and should be lubricated

per
specifications given in the
Lubrication
chart: see Item 1. Chassis Bearings.
B-46.
Front
and
Rear Spring
Bushings

The
condition of the spring bushings is indicated
by the alignment of the spring pivot and spring
shackle
bolts.
Check
the alignment of
these
bolts,

and
check that nuts are
tightened
securely.

B-47.
Spring
Shackles

Rubber
bushings are provided on the spring
shackles.
These rubber bushings have no lubrication
fitting and it is very important that
they
never be lubricated.

B-48.
Shock Absorbers

Visually
check for broken mounts or bolts, worn

or
missing bushings on the shock absorbers. Refer
to Section S.

B-49.
Front and
Rear
Axle
U-Bolts

Torque
the front and
rear
axle U-bolts. Refer to Section S.

B-50. Front
and
Rear
Axle
Differentials
—
Lubricant Levels

The
lubricant
level of all front and
rear
differentials should be at the level of the fill-hole.

B-51.
Front and
Rear
Axle
Differentials
—
Changing
Lubricant
B-52.
Conventional Differentials

To
remove the lubricant from the front or
rear
differential,
it is necessary to remove the housing cover. Let the lubricant
drain
out, and then flush
the differential with a flushing oil or light
engine

oil
to clean out the housing
(except
Powr-Lok
or
Trac-Lok
Differentials). Do not use water, steam,
kerosene, or
gasoline
for flushing.

Reinstall
the housing cover, replacing the gasket whenever necessary, torquing the cover
bolts
to 15 to 25 lb-ft. [2,1 a 3,4 kg-m.].
Remove the filler plug, and
refill
the differential
housing as specified in the
Lubrication
Specifica­
tions.

B-53.
Powr-Lok
or
Trac-Lok Differential

Some vehicles may be equipped with the
Powr-Lok

or
Trac-Lok
Differential as optional equipment.
Special
lubricant and ordinary multipurpose gear

lubricants
must
not be used. Use only
'Jeep*
Differ­

ential
Oil,
Part
No. 94557.

Powr-Lok
or
Trac-Lok
differentials may be cleaned
only by disassembling the unit and wiping with
clean
rags. Do not flush the unit. Refer to Sec­
tion N.

B-54.
Front Axle Universal Joint
—
Lube

Check
the level of the front axle universal joint
lubricant
at each front wheel by removing the
fill-hole plug. The lubricant should be level with
the fill-hole. If required, add lubricant as specified

in
Lubrication
Specifications.

B-55.
Front
Axle
Universal
Joint
— Service

On
all 4-wheel drive vehicles the front axle
uni­

versal
joint should be serviced by removing the shaft and thoroughly cleaning the universal joints

and
housing. For the correct procedures, refer to
Section M. 16

'Jeep'
UNIVERSAL SERIES SERVICE
MANUAL

B
Reinstall
the axle shafts, and
refill
the housings to
plug level using the universal joint lubricant
specified in
Lubrication
Specifications.

B-56.
Front
Axle Wheel Bearings

To
lubricate the wheel bearings, it is necessary
to remove, clean, repack, and adjust them. When
front wheel hubs and bearings are removed for
lubrication,
they should be thoroughly washed in a
suitable cleaning solvent. The bearings should be
carefully
dried and then given a thorough cleaning

and
inspection. Use a clean brush to remove all

particles
of old lubricant from bearings and hubs.

After
the bearings are cleaned, inspect them for
pitted races and rollers. Also, check the hub oil
seals.

Note:
Wheel bearing lithium base lubricants are
used at the factory for
initial
fill
of
these
bearings.
When
lithium base and sodium base lubricants are

mixed,
the result is a thinned-out mixture that
can
bleed through seals. It is therefore important
that lubricants with the correct base be used when

lubricating
the wheel bearings.
Should
leaks occur at wheel bearing seals, the leaks

may
be caused by a mixture of two
types
of
lubri­

cants.
In such cases, the old lubricant should be
completely removed before new lubricant is added.

Wheel
bearings should be thoroughly cleaned,
lubricated
with lithium base and reinstalled.

Repack
the bearing
cones
and rollers with grease

and
reassemble hub in the reverse order of the
disassembly. Test the bearing adjustment as out­

lined
in Section Q.

B-57.
Rear
Axle Wheel Bearings

The
Rear
wheel bearings an early models equipped

with
lubrication fittings with a vent opening
through the housings above each fitting should be
lubricated
sparingly, each
2,000
miles
[3.200
km.].

Use
a hand compressor and wheel bearing grease,
forcing
the grease through each lubrication fitting

until
it flows from the vent. Vent should be kept
clear
of obstruction or grease
will
back up into the

brakes.
Do not add grease after it flows from the
vent for it may be forced through the wheel key-
way
onto
the outside of the wheel and possibly

onto
the brake linings.
Rear
wheel bearings that do
not have lubrication fittings should be removed
each
12,000
miles
[19.200
km.] and the bearing
cleaned, inspected and repacked. Refer to proce­

dure
in Par. B-56.

Note:
When servicing the Flanged Axle Unit
Bear­

ing Assembly, refer to Section N, Par. N-5 for

proper
lubrication procedures.

B-58.
Propeller Shafts
and
Universal Joints

The
propeller shaft slip joints and universals should
be lubricated with a hand compressor grease gun so as to not damage the bearing seals. The units
should be lubricated with a
good
quality grease.

Refer
to the
Lubrication
Chart
for lubrication fre­
quency and lubricant type and grade. B-59.
Lights
and
Controls

a.
Check
all interior and exterior lights and light
switches for proper operation, including: parking
lights, headlamps (high beam and low beam),

tail
lights, brake lights, directional lights, and in­ strument panel lights.

b.
Check
all instrument panel controls and
instru­

ments for proper operation.

B-60.
Speedometer Cable

Remove the
speedometer
cable from its housing every
12,000
miles
[19.300
km.].
Clean
it thor­
oughly and coat it with a
good
quality light graphite grease.

B-61.
Headlights

Refer
to Section H.

B-62.
Heater Controls

Apply
Lubriplate
130-A to all friction points and
pivot points on the heater controls panel unit as well as the pivot points at the dashpot. Apply

a
few drops of penetrating oil all along the Bowden
cable.
This
oil
will
penetrate into the center wire.

B-63.
Windshield Wiper and
Washer Controls

Lubricate
the friction points and the pivot points
on the windshield wiper transmission and linkage

arms
with a slight amount of
Lubriplate
130-A.

B-64.
Rotate Tires

Refer
to Section Q for the correct method of rotat­ ing the tires.

B-65.
Body Lube Points
•
Refer to Par. B-66 through B-68.

B-66.
Hood Hinge Pivot Points

Lubricate
the frictional points of the hood hinge
pivot points with a few drops of light-weight
engine

oil.
B-67.
Glove Compartment Door Latch
Sparingly
wipe
Lubriplate
130-A on the
glove
com­
partment door latch.

B-68.
Tailgate Hinges

Lubricate
the friction points of the tailgate hinges

with
a few drops of light-weight
engine
oil.

B-69.
LUBRICATION
OF
OPTIONAL EQUIPMENT

B-70.
Pintle Hook

When
lubricating the vehicle, place a few drops of oil on the pintle hook and safety latch pivot pins.

B-7!.
Centrifugal Governor

Check
the oil level in the governor housing at each
vehicle lubrication. Use the same seasonal grade
oil
as is used in the
engine
and change oil at each

engine
oil change. Do not
fill
the housing above
the level indicating plug opening. Keep the vent

in
the filler plug open at all times. 17

B

LUBRICATION
B-72.
Powr-Lok
or Trac-Lok
Differential

Refer
to Par. B-53.

B-73.
PARTS
REQUIRING
NO
LUBRICATION

B-74.
Water Pump Bearing,
Clutch
Release
Bearing

The
water pump and clutch release bearings are

prelubricated
for life when manufactured and cannot be relubricated.

B-7S.
Starter
Motor
Bearings

The
starting motor bearings are lubricated at assembly to last
between
normal rebuild periods.

B-76.
Alternator Bearings

The
alternator bearings are lubricated at assembly

and
require no further lubrication.

B-77.
Springs

The
vehicle springs should not be lubricated. At assembly the leaves are coated with a long-lasting

special
lubricant which is designed to last the life
of the springs. Spraying with the usual mixture of
oil
and kerosene has a tendency to wash this
lubri­

cant
from
between
the leaves, making it necessary
to relubricate
often
to eliminate squeaking.

B-78.
Shock Absorbers

Hydraulic
direct-action shock absorbers are per­ manently sealed and require no periodic
lubrica­

tion service. Shock absorber mounting bushings
are
not to be lubricated.

B-79.
LUBRICATION
REQUIREMENTS
FOR
OFF-HIGHWAY
OPERATION

Adequate lubrication
becomes
increasingly im­ portant when vehicles are used in off-highway
operation. Under
these
conditions all operating
parts
of both the
engine
and chassis are subjected
to unusual pressures. At the same time such operation is usually under abnormal dust and
dirt

conditions making additional precautions neces­

sary.
The importance of correct lubrication for
the conditions of operation cannot be overestimated.

B-80.
Engine
Oil

It
is important, that the oil in a new or rebuilt
engine
be changed after the first
eight
or ten hours
of operation, and for heavy, dusty work, every 50

hours
thereafter. Watch the condition of the oil closely and change it immediately if it appears to
be contaminated.

i-Il.
Engine
Oil
Filter

Replace
the oil filter at the end of the first 100

hours
of service. Under extreme operating con­ ditions, more frequent replacement may be re­
quired.
The condition of the oil is a reliable

indicator
of the condition of the filter element.
If
the oil
becomes
discolored and shows evidence
of contamination, change the filter without delay.
(Refer
to
Par.
B-10, B-ll for the correct procedure
for replacing the oil filter.)

B-82.
Air Cleaner

Care
of the air cleaner is extremely vital to the life of the engine. Pay particular attention to the
amount of dust and
dirt
in the air taken into the

engine
through the air cleaner. When dust is not
noticeable in the air, service the air cleaner each scheduled maintenance period. Whenever the air is
noticeably dusty (for example when the vehicle is

driven
on secondary roads or through fields) then
service the air cleaner more frequently. Under extreme continually dusty and dirty conditions
where the vehicle operates in clouds of dust and

dirt,
service the air cleaner daily. (Refer to Par.
B-24
thru
B-26 for service procedures.)

B-83.
Chassis
Lubrication

The
period of lubrication depends entirely upon the type of work being done. Using the specified

interval
given in the Service Maintenance Schedule as a guide, lubricate at safe intervals required for
the particular type of operation. Under extremely
dusty conditions lubricate
these
points daily. Be

sure
to force enough lubricant into each fitting to force out the old lubricant which might be con­
taminated with grit and which would cause
rapid

wear
if allowed to remain.
Do not place lubricant on the various
ball
and socket joints or pivot points of the lift linkage as
dirt
will
accumulate to form an abrasive mix­

ture.
It is
best
to simply wipe
these
parts clean

with
a cloth.

B-84.
Front
Axle
Shaft Universal Joints

For
off-highway use remove the universal joints twice yearly, thoroughly clean both the housings

and
joints with a suitable solvent, and
refill
the
housings to the
fill
plug opening levels with the

correct
lubricant as given in the
Lubrication
Specifications.

B-85.
Transmission and Transfer
Case

The
combined capacity of the two housings is
small
for economy, making it important that the

lubricant
be changed at regular intervals. For off-highway use
drain
both housings every 300

hours
of operation and
refill
to the
fill
plug opening
levels. Refer to B-35 through B-37 when changing

lubricant.

B-86.
Front and
Rear
Axle
Differentials

Because of the higher pressure developed in the
axle assemblies with heavy duty operation,
drain,

flush,
and
refill
the differential assemblies each 300 hours of operation. Use only flushing oil or light
engine
oil to clean out the housings (except

Powr-Lok
and
Trac-Lok
differentials). Refer to
Par.
B-52 and B-53 for draining and flushing

differential.
18

TUNE-UP

C-29.
SERVICE
DIAGNOSIS

POOR
FUEL ECONOMY Ignition Timing Slow or Spark Advance Stuck

Carburetor
Float High
Accelerator Pump Not Properly Adjusted High Fuel Pump Pressure

Fuel
Leakage

Leaky
Fuel Pump Diaphragm Loose Engine Mounting Causing High Fuel Level in Carburetor

Low
Compression
Valves Sticking
Spark
Plugs Bad

Spark
Plug Cables Bad
Weak
Coil
or Condenser Improper Valve Tappet Clearance

Carburetor
Air Cleaner Dirty
High Oil Level in Air Cleaner Dragging Brakes

Front
Wheels Out of Alignment

Tires
Improperly Inflated Inaccurate Odometer

Faulty
Fuel Tank Cap
Clogged
Muffler or Bent Exhaust Pipe Sticking Exhaust Manifold Valve

LACK
OF POWER
Low
Compression Ignition System (Timing Late)
Improper Functioning Carburetor
or Fuel Pump

Fuel
Lines
Clogged

Air
Cleaner Restricted Engine Temperature High Improper Tappet Clearance
Sticking Valves
Valve Timing Late

Leaky
Gaskets
Muffler
Clogged

Bent Exhaust Pipe Sticking Exhaust Manifold Valve —
Dauntless V-6 Engine

LOW
COMPRESSION
Leaky
Valves Poor Piston Ring Seal Sticking Valves
Valve Spring Weak or Broken
Cylinder
Scored or Worn
Tappet Clearance Incorrect Piston Clearance too Large

Leaky
Cylinder Head Gasket

BURNED
VALVES AND SEATS Sticking Valves or too Loose in Guides
Improper Timing
Excessive Carbon Around Valve Head and Seat Overheating
Valve Spring Weak or Broken
Valve Tappet Sticking
Valve Tappet Clearance Incorrect
Clogged
Exhaust System

Defective
Valve
Lifter
— Hydraulic
VALVES
STICKING
Warped Valve Improper Tappet Clearance Carbonized or Scored Valve
Stems

Insufficient Clearance Valve Stem to Guide
Weak or Broken Valve Spring Valve Spring Cocked Contaminated Oil

OVERHEATING
Inoperative Cooling System
Theromstat Inoperative Improper Ignition Timing
Improper Valve Timing
Excessive Carbon Accumulation
Fan
Belt too Loose

Clogged
Muffler or Bent Exhaust Pipe
Oil
System Failure Scored or Leaky Piston Rings
Sticking Exhaust Manifold Valve — Dauntless V-6 Engine

POPPING-SPITTING-DETONATION
Improper Ignition Improper Carburetion
Excessive Carbon
Deposit
in
Combustion Chambers
Poor Valve Seating Sticking Valves
Broken Valve Spring Tappets Adjusted too Close
Spark
Plug Electrodes Burned
Water or Dirt in Fuel
Clogged
Lines Improper Valve Timing

Clogged
Fuel Filter Sticking Exhaust Manifold Valve —
Dauntless V-6 Engine

EXCESSIVE
OIL CONSUMPTION Piston Rings Stuck in Grooves, Worn or Broken Piston Rings Improperly Fitted or Weak Piston Ring Oil Return
Holes
Clogged

Excessive Clearance, Main and
Connecting Rod Bearings

Oil
Leaks at Gaskets or Oil Seals
Excessive Clearance, Valve Stem
to Valve Guide (Intake)

Cylinder
Bores Scored, Out-of-
Round or Tapered
Too Much Clearance, Piston to Cylinder Bore
Misaligned Connecting Rods
High Road
Speeds
or Temperature
Crankcase
Ventilator Not Operating

BEARING
FAILURE
Crankshaft
Bearing Journal Out-of-Round

Crankshaft
Bearing Journal Rough

Lack
of Oil
Oil
Leakage

Dirty
Oil

Low
Oil Pressure or Oil Pump Failure

Drilled
Passages
in Crankcase or Crankshaft
Clogged

Oil
Screen Dirty
Connecting Rod Bent 34

'Jeep5
UNIVERSAL SERIES SERVICE
MANUAL

D
Driver
W-238 is equipped
with
an
adapter
ring

which
correctly positions the guides. See Fig. D-23. Start a new exhaust valve guide, blunt (nontapered)
end
first,
into
the valve guide bore in the top of the cylinder block. When properly positioned, the
top end of the guide is exactly
1
"
[25,4 mm.] below
the level of the top of the block as shown in Fig.
D-24.
Start
a new intake valve guide, tapered end
first, into position from the
bottom
of the cylinder

head.
When properly positioned, the end of the
guide is just flush with the end of the valve guide
bore in the cylinder head as shown in Fig. D-24.

Run
a reamer (Tool
C-3 8)
through the new
guides

after they have been correctly positioned.

D-62. Tappets
and
Cover

The
valve tappets are lubricated through oil troughs cast in the crankcase. The troughs are
filled by oil sprayed from the connecting rod ends

and
passages are drilled through the tappet
guides
to
carry
the oil to the tappets. A
groove
around the center of the tappet shank carries the oil up and down the guide.

Check
the threads and fit of the exhaust valve ad­

justing
screw in the exhaust valve tappets. The fit of a screw should be such that a wrench is required to
turn
it into or out of the tappet as
these
are of
the self-locking type. Replace the worn part, either
the screw or the tappet, or both, if there is
loose­

ness
between
the parts.
D-63.
Crankshaft Rear Bearing Seal

Oil
leakage through the
rear
main bearing is pre­ vented by a metal supported neoprene lip type

seal
which can readily be installed without remov­
ing the crankshaft.

Should
trouble be experienced with oil leaking

from
the
rear
main bearing there are several points

which
should be checked.

a.
Be sure that the identifying paint daub on the
bearing
cap is the same as that appearing on the
center bearing web.

b.
The bearing to crankshaft clearance must not
exceed .0029"
[0,0736
mm.].

c.
Place sealer on the faces of the
rear
bearing cap

from
the
rear
oil
groove
to the oil seal grooves.

d-
Be sure the rubber oil seals extend about 34" [6 mm.] below the
bottom
face of the cap.

e.
Be sure the oil pan gasket is not leaking.
f.
Check
to be sure the oil leak is not at the cam­
shaft
rear
bearing expansion plug or from the
crankcase.

D-64.
Floating Oil
Intake •
Refer to Fig. D-25 and D-26.

The
floating oil intake is attached to the
bottom

of the crankcase with two screws. The float and
screen causes it to ride, raise and lower with the
amount of oil in the pan.
This
prevents water or
dirt,
which
may have accumulated in the
bottom

of the oil pan, from circulating through the
engine

because the oil is drawn horizontally from the top

surface.
Whenever removed, the float, screen, and
tube should be cleaned thoroughly to remove any
accumulation
of
dirt.
Also clean the oil pan.

Fluctuating
oil pressure can usually be traced to

an
air leak
between
the oil float support and the

crankcase.

Be
sure the float support flange is flat.
Clean
both
the flange and the crankcase surfaces thoroughly
before installing a new gasket. Be sure the retaining
screws are tight.
D-65. Oil
Pump

The
oil pump is located externally on the left side
of the engine. In operation oil is drawn from the

crankcase
through the floating oil intake then passes through a drilled passage in the crankcase
to the pump from which it is forced through

drilled
passages to the crankshaft and camshaft
bearings. When it is necessary to remove an oil
pump,
first remove the distributor cover and
note
the position of the distributor rotor so that the pump may be reinstalled without disturbing the
ignition timing. To install the pump without dis­

turbing
the timing, the pump gear must be cor­

rectly
meshed with the camshaft driving gear to
allow
engagement
of the key on the distributor shaft with the pump shaft slot, without changing the position of the distributor rotor. Distributor
can
be installed only in one position as the slot and

driving
key are machined off-center.

The
oil pump consists of an inner and outer rotor

within
the pump body. An oil relief valve is mounted in the pump body which controls the oil

pressure.
To disassemble the pump, Fig. D-27, first remove the gear which is retained by straight

pin.
It
will
be necessary to file off one end of the
pin
before driving it out with a small drift. By re­
moving the cover the outer rotor and the inner

rotor
and shaft may be removed through the cover opening.
Failure
of the pump to operate at

full
efficiency may usually be traced to excessive
end float of the rotors or excessive clearance be­ tween the rotors. The clearance
between
the outer

rotor
and the pump body should also be checked.
Match
the rotors
together
with one
lobe
of the inner

rotor
pushed as far as possible into the notch of the outer rotor. Measure the clearance
between
the

lobes
of the rotors as shown in
Fig.
D-28.
This
clear­ ance should be .010"
[0,254
mm.] or less.
If
more, replace both rotors. Measure the clearance

between
the outer rotor and the pump body as
shown in Fig. D-29. Should this clearance exceed .012" [0,305 mm.] the fault is probably in the
pump body and it should be replaced. End float
of the rotors is controlled by the thickness of the cover gasket which is made of special material that

can
be only slightly compressed. Never use other

than
a standard factory gasket.
Check
the cover
to be sure the inner surface is not rough or scored

and
that it is flat within .001" [0,025 mm.]
tested

with
feeler
gauges,
Fig. D-30. Measure thickness of
the rotors which must be within .001" [0,025 mm.]
of each other. Assemble the rotors in the pump body and install the cover without the gasket.
When
the cover screws are tightened to normal
tension, there should be interference
between
the
rotors and the cover making it impossible to
turn
the pump shaft by hand. Remove the cover and re- 57