service JEEP CJ 1953 Service Manual

1953-71

SERVICE MANUAL

JeeP
UNIVERSAL
4-WHEEL DRIVE
CJ-3B CJ-5A
CJ-5
CJ-6
CJ-6A
2-WHEEL DRIVE DJ-5
DJ-6

Copyright®
1977

FI Jeep Corporation Corporate Publications
Printed
in USA
Reprinted
6-77

SM-1046
SECTION
INDEX

NAME
Section

General
Data
A

Lubrication
B

Tune-Up
C

Hurricane
F4 Engine
D

Dauntless V-6 Engine
Dl

Fuel
System
E

Exhaust
System
F

Exhaust
Emission Control System F4 Engine
Fl

Exhaust
Emission Control System V6-225 Engine
F2

Cooling System
G

Electrical
H

Clutch
I

3-Speed
Transmission
J

4-Speed
Transmission
Jl

Transfer
Case
K

Propeller Shafts
L

Front
Axle
M

Rear
Axle
N

Steering 0

Brakes
P

Wheels 0

Frame
R

Springs
Shock Absorbers
S

Body
T

Miscellaneous
U

IMPORTANT
DEALER
INFORMATION

This
manual, SM-1046, covers current 'Jeep' Universal Series vehicles, and
past models,
except
as
noted
hereinafter:
SM-1037 should be retained in your service
library
for
information related to the
6-volt
electrical system, or the
single brake system.

SM-1002-R5
(no longer available) should be retained
for information related to the
CJ-2A, CJ-3A
or
DJ-3A

models
equipped with the L4-134
engine.

The
above
three manuals provide
full
service coverage since inception of the
'Jeep' Universal and
1
Jeep' Dispatcher model vehicles.

'Jeep*
UNIVERSAL
SERIES SERVICE
MANUAL

A
GENERAL
DHTfl

Contents

SUBJECT
PAR.

General
A-l

Vehicle
Description .A-2

Vehicle
Identification A-3
Identification
Number Location A-4
Serial
Number Location A-5

Engine
Code Number A-6

Plate-And-Trim
Option Plate A-7

General
Specifications A-8

A-1.
GENERAL
This
manual is provided for the guidance of all
automotive service men, vehicle owners, and service salesmen who
repair,
maintain, or adjust
the 'Jeep' Universal Series vehicles. The informa­tion herein was prepared from the service man's
viewpoint to
give
him the accurate and concise
data
he may need to service the entire vehicle.

The
information is not elementary as it is intended
for automotive service men who are familiar with
automotive construction and repair in general. It is not intended, nor would it be possible in such

limited
space, to cover every possible repair that he may encounter. All specifications are in accord

with
Engineering Specifications and should be

adhered
to in all work on the vehicle.
The
manual sections follow logical division into

major
components of the vehicles. The first
page

of each section has a detailed index of the
contents
of that section. Subject matter covers all models

included
in this manual unless an exception for a

particular
model is specifically mentioned.
Specifications and components covered were for

standard
production models of 'Jeep' vehicles
current
at the time the manual was approved for

printing.
'Jeep' Corporation reserves the right to
discontinue models at any time or change specifi­
cations or design of any of its models without
notice and without
incurring
any obligation.

A-2.
Vehicle Description

This
manual covers all standard production 'Jeep'

Universal
models currently being produced at the time this manual was approved for publication.

Significant
changes made in each model since it
was first produced are included in the manual.
A
description of each model follows.
General

specifications for each model are listed in Par. A-8. Detailed specifications covering major vehicle units

are
listed at the end of each section of the manual.
CJ-3B
—
This
is a 4-wheel-drive 'Jeep' Universal
model, equipped with the four-cylinder

Hurricane
F4-134 engine. Wheelbase is 80".

CJ-5

CJ-5A
— These are 4-wheel-drive 'Jeep' Universal models, equipped with either the Daunt­

less
V-6 engine, or the four-cylinder

Hurricane
F4-134 engine. Wheelbase is 81".

CJ-6
CJ-6A
— These are 4-wheel-drive 'Jeep' Universal models, equipped with either the Daunt­
less
V-6 engine, or the four-cylinder

Hurricane
F4-134 engine. Wheelbase is 101".

DJ-5
DJ-6
— These are 2-wheel-drive 'Jeep' Universal models, equipped with the four-cylinder

Hurricane
F4-134 engine. DJ-5 wheel- base is 81". DJ-6 wheelbase is 101".

A-3.
Vehicle Identification
Each
'Jeep' vehicle model series has one or more

serial
number prefixes to identify it. Complete
identification of a specific vehicle requires the

prefix
plus the
serial
number.
Serial
numbers are
consecutive for each prefix grouping. Prefix infor­
mation following
will
identify the 'Jeep' models
shown by
serial
number prefix from model inception to date.-.
••
' . -

Note:
Vehicles with a
serial
number prefix of five
(5) or more digits that have an S, 5, or 7 as the last
digit are equipped with
Exhaust
Emission
Control.

A
number 1 in the sixth (6th) digit within a seven (7) digit vehicle
serial
number prefix indicates

Left
Hand
Drive;
a 2 indicates Right
Hand
Drive;
a
3 indicates
Left
Hand
Drive
California
Exhaust

Emission
Control
Engine;
a 4 indicates Right
Hand
Drive
California
Exhaust
Emission
Control
Engine.
3

'Jeep'
UNIVERSAL SERIES SERVICE
MANUAL

A
water pump
boss
at the front of the
engine,
as
shown in Fig. A-3. The Dauntless V-6
code
number is stamped on the right front face of the cylinder
block, just
below
the rocker arm cover as shown in
Fig.
A-4.

A-7.
Paint-and-Trim Option Plate
A
Paint-and-Trim
Option Plate is installed on late
production 'Jeep' vehicles. The paint
code
on the plate identifies the paint colors. The trim
code
on
the plate identifies the color of all trim parts in the
interior
of the vehicle.

To
identify paint or trim on vehicles manufactured

before
the Paint-and-Trim Option Plate was in­
stalled, see your 'Jeep' dealer.
'Jeep' Universals have the plate located on the
right hand side of the dash under the hood, as shown in Fig. A-5.
FIG.
A-5—PAINT
AND
TRIM

OPTION
PLATE LOCATION
5

'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

*Jeep?
UNIVERSAL
SERIES
SERVICE
MANUAL

FIG.
B-2—LUBRICATION
CHART
—
2-WHEEL
DRIVE
VEHICLES

CHART
NO
ITEM
TO BE

LUBRICATED
FREQUENCY

1000 miles = 1.600 km.
QUANTITY

U.S.
Imperial Metric
LUBRICANT

TYPE
Summer I Winter

Chassis
Bearings.....

Universal
Joints...... Steering
Gear
Housing

Rear
Wheel Bearings fx

Front
Wheel
Bearings®

Transmission

Differential

Hand
Brake Control Handle Cable

Hand
Brake Control
Cable
Rear

Generator — F4

Speedometer
Cable....
Distributor — F4
Oiler

Wick

Pivot
Cam

Distributor Cam — V6.

Air
Cleaner — F4
—
V6.
....

Engine
— F4

Engine
— V6
Each
2,000
miles

Each
2,000
miles

Check
each
2,000
miles

With
Lube Fittings;
Sparingly each
2.000
miles
Without Lube Fittings: Disassemble to Lubricate
each
12,000
miles
Disassemble to lubricate each

12,000
miles

Check
each
2,000
miles
Change each
20,000
miles

Check
each
2,000
miles Change each
12,000
miles

Each
12,000
miles

Each
12,000
miles

Each
2,000
miles Disassemble to lubricate each
12,000
miles

Each
2,000
miles
Each
2,000
miles

Each
2,000
miles

Each
2,000
miles

At
each breaker point replacement
Each
2,000
miles
Each
6,000
miles
Change each
2,000
miles or 60 days Change each
6.000
miles or 60 days
As
required

As
required

As
required

As
required

As
required
1 XA pts. 114 pts. 0,7 ltrs. 2 pts. 1 % pts. 0,9 ltrs.

As
required

As
required
2 to 4 Drops
As
required

Several
Drops One Drop
One Drop
2 c.c.

As
required
1
M
pts. 1 pt. 0,6 ltrs.
4 qt.** 3 H qts. 3,8 ltrs. 4 qt.** 3
}A
qts. 3,8 ltrs.
Chassis
Lubricant

Chassis
Lubricant
MIL-L-2105-B

Wheel Bearing Lubricant
Wheel Bearing Lubricant
GL4

MIL-L-2105-B*

Graphite
Grease

Graphite
Grease
Engine
Oil

Graphite
Grease

Engine
Oil

Engine
Oil

Engine
Oil

Cam
Lubricant

Cam
Lubricant

Engine
Oil

Engine
Oil

Engine
Oil No. 1 No. 1
No. 1 No. 1

SAE-80 SAE-80
No. 2 No. 2
No. 2 No. 2

SAE-90 SAE-80
SAE-80 SAE-80

Medium Medium
Medium Medium Same as
engine
Light

Same as
engine

Same as
engine

Same as
engine

SAE-40
or 50

®
Above
90°F.
Between -f
10°F.
and
90°F.
Between
-10°F.
and
-fl0°F.
Below
-10°F.
use SAE 30 or 10W-30 use SAE 20W or 10W-30 use SAE 10W or 10W-20 use SAE 5W or 5W-20

BE
St
Not lower than
32°F.
[08C] Between
32°F.
10°C] and 0°F.
l-17°CI
Below 0°F. [-17°C] use SAE 20W or SAE 10W-30 use SAE 10W or SAE 10W-30 use SAE 5W or SAE 5W-20

•For
Powr-Lok and
Trac-Lok
differential use only 'Jeep' Differential Oil, Part No.
94557.

**When oil filter is changed at the same time, add one quart {one
ltr.].
(x)Do not mix lithium and sodium
base
lubricants. Use lithium
base
lubricants as specified. 9

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

'Jeep*
UNIVERSAL
SERIES
SERVICE
MANUAL

13330

FIG.
B-4—ENGINE
LUBRICATION
SYSTEM
—
DAUNTLESS
V-6
ENGINE

1—
Rocker
Arm Shaft
2—
Main
Oil
Line

3—
Oil
Inlet where it is connected by a drilled passage in the

cylinder
crankcase to an oil screen housing and
pipe assembly. The screen is submerged in the oil supply and has ample area for all operating condi­
tions. If the screen should
become
clogged
for any reason, oil may be drawn into the system over the
top
edge
of the screen, which is held clear of the

sheet
metal screen housing.

Oil
is drawn into the pump through the screen and
pipe assembly and a drilled passage in the
crank­

case, which connects to drilled passages in the
timing chain cover. All oil is discharged from the
pump to the oil pump cover assembly. The cover
assembly consists of an oil pressure relief valve,
an
oil filter bypass valve and a nipple for installa­
tion of an oil filter. The spring loaded oil pressure

relief
valve limits the oil pressure to a maximum
of 30 pounds [13.607 kg.] per square inch. The

oil
filter bypass valve
opens
when the filter has
become
clogged
to the
extent
that
4V2
to 5 pounds [2.04 a 2.27 kg.] pressure difference exists
between

the filter inlet and exhaust to bypass the oil filter
and
channel unfiltered oil directly to the main oil galleries of the engine.

A
full flow oil filter is externally mounted to the

oil
filter cover nipple on the right side of the en­ gine, just below the alternator. Normally, all
engine

oil
passes through the filter element; however, if
the element
becomes
restricted, a spring loaded bypass valve
opens
as mentioned above. The main

oil
galleries run the full length of the crankcase
and
cut into the valve lifter guide
holes
to supply

oil
at full pressure to the lifters. Connecting pas­
sages
drilled in the crankcase permit delivery of

oil
at full pressure to all crankshaft and camshaft
bearings.
Holes drilled in the crankshaft
carry
oil from the
crankshaft
bearings to the connecting rod bearings.
Pistons and cylinder walls are lubricated by oil
forced through a small notch in the bearing parting
surface on the connecting rod, which registers with
the
hole
in the crankpin
once
in every revolution. Piston pins are lubricated by splash.

Drilled
holes
in the camshaft connect the front camshaft bearing
journal
to the key slot in the front
of the camshaft. Oil flows from the
journal
into
the keyslot over the woodruff key in the space

between
the key and the camshaft sprocket and fuel pump eccentric.

The
forward end of the fuel pump eccentric in­ corporates a relief which allows the oil to escape

between
the fuel pump eccentric and the camshaft

distributor
gear. The oil stream strikes the distri­
butor shaft gear
once
each camshaft revolution, and provides ample lubrication of the timing chain and
sprockets by splash.

The
rocker arms and valves on each cylinder head

are
supplied with oil from the oil galleries through

holes
drilled in the front of the cylinder block and

cylinder
head. The
hole
drilled in the cylinder
head ends beneath the front rocker
arm
shaft brack­ et. A notch cast in the base of the rocker arm shaft

bracket
allows the oil to flow up inside the bracket

in
the space
between
the bracket and bolt, to the
hollow rocker arm shaft which is plugged at both
ends.
Each
rocker arm receives oil through a
hole

in
the underside of the shaft. Grooves in the rocker

arm
provide lubrication of the bearing surface. Oil
is metered to the push rod seat and valve stem
through
holes
drilled in the rocker arm. Excess
oil
drains off and returns to the oil pan through
passages in the cylinder head and block. Refer to
the
Lubrication
Chart
for lubrication frequency and

lubrication
type and grade.

B-7.
Chassis
Lubrication

Chassis
and
engine
should be serviced at periodic
intervals.
Most chassis lubricating points, whether
long-life or conventional, have standard lubrication
fittings. Refer to the
Lubrication
Specifications and

Service
Maintenance Schedule for specific points

and
lubricating time intervals. It is not necessary
to disassemble prepacked joints to lubricate them.

Merely
add new lubricant, as described in Par.
B-3,
to remove all old lubricant.

At
the appropriate interval, clean each lubrication
fitting indicated on the Lubrication
Chart
and
Service
Maintenance Schedule. Use a pressure gun
to lubricate. Be sure the grease channels are open
to provide complete lubrication of bearing surfaces.
In
some
cases it may be necessary to disassemble
to clear plugged channels.

When
vehicles are driven primarily in abnormally dusty or wet areas or when a vehicle is subject to
severe operating conditions, perform
these
services
more frequently. Under
these
conditions, no definite interval can be recommended because of the great variety of
uses
and conditions of use. 11

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

B
e.
Check
for the presence of
excess
water in the

oil
that might indicate an internal leak from the
cooling system.

f.
Pour oil into the oil filler tube. Replace the oil

filler
cap.

B-10.
Engine Oil
Filter
Service —
Hurricane
F4 Engine

The
engine
oil filter assembly should be replaced at each
2000
miles
[3.200
km.] of normal
engine

use. To remove the filter, use oil filter wrench
C-4065.
To install a new filter, wipe the gasket —
contact surface with
engine
oil, screw on the unit

until
gasket contacts the sealing surface, and then tighten at least one
half
turn
more. DO NOT USE

TOOLS.
Turn
by hand only. When refilling the
engine
crankcase after filter has been changed be

sure
to add one extra quart [1 ltr.] of oil to
fill

filter
and oil passages. Run
engine
to make sure there is no leak at oil filter.

B-l 1.
Engine Oil
Filter
Service — Dauntless V-6 Engine

To
replace the oil filter, use oil filter wrench, Tool

C-4065,
to remove the filter. After the filter has
been removed from the oil pump housing located
on the right front side of the engine, wipe the
housing surface clean and oil the gasket on the base of the new filter to make a
good
seal. Screw
the new filter in position until its gasket contacts
the pump housing surface, then tighten at least
one-half
turn
until filter fits snug.

Note:
Tighten by hand only, do not use a tool to
tighten.

Replace
oil filter each
6000
miles
[9.600
km.] at

engine
oil change.

B-12.
Exhaust
Manifold
Heat
Control
Valve
— Dauntless V-6 Engine

A
thermally-actuated heat control valve is located at
rear
of the right exhaust manifold of the Daunt­

less
V-6 engine.
This
valve has a bimetal thermo­
static spring which holds the valve closed when
the
engine
is cold.

Each
time the vehicle is lubricated place a few drops of penetrating oil on the valve shaft bushings

and
then work the valve by hand making sure that
the lubricant is worked into the bushings.

Note:
If the valve shaft
does
not operate freely
penetrating oil should be used to free the shaft.

B-l 3.
Positive
Crankcase
Ventilation
System

Service
the ventilation system of the
engine
each
multiple of
6000
miles
[9.600
km.] on the odometer
after
initial
2000
miles
[3.200
km.] service. Re­
place the ventilation valve each
12,000
miles
[19.200
km.].

For
information on servicing the positive crankcase
ventilation system on the
Hurricane
F4
engine
and
the Dauntless V-6 engine, refer to the Tune-up Section.

B-l4.
Distributor
— Hurricane F4 Engine

The
distributor shaft is lubricated through an oiler mounted on the side of the housing. Place three or four drops of light
engine
oil in the oiler each
2,000

miles
[3.200
km.]. Also place one drop of light
engine
oil on the wick located on the top of the
shaft, which is made accessible by removing the
rotor
arm. Sparingly apply cam lubricant to the
breaker
arm cam and place a drop of oil on the

breaker
arm pivot.

B-l
5.
Distributor
— Dauntless V-6 Engine

The
distributor has a lubricant reservoir that
car­

ries
sufficient
lubricant
for the life of the distributor.
When
servicing breaker points, place one drop of
light
engine
oil on the wick located on the top of the shaft Also, apply cam lubricant sparingly to
the breaker arm cam, and place a drop of oil on the

breaker
arm pivot.

B-l6.
Generator

On
early production vehicles oilers are provided
at each end of the generator, for lubrication
pur­

pose.
On late production vehicles one oiler is pro­
vided at the
rear
(bushing end) of the generator for lubrication purpose. Place two to four drops of
light
engine
oil in each oiler every
2,000
miles
[3.200
km.].

B-l
7. Spark Plugs

Replace
spark
plugs. Refer to Section C.

B-18.
Starting
Circuit

Check
the starting
circuit.
Refer to Section H.

B-l
9. Charging
Circuit

Check
the charging
circuit.
Refer to Section H.

B-20.
Engine Tune-Up

Refer
to Section C of this manual.

B-21.
Adjust
Fan
Belt

Refer
to Section C.

B-22.
Exhaust Emission
Control
System or
Controlled
Combustion System

•
Refer to the appropriate section in this manual.

B-23.
Exhaust System

Check
the exhaust system for leaks. Refer to Section F.

B-24.
Fuel Evaporative Emission
Control
Canister Air
Filter

The
only service required for the
F.E.E.C.
system
is cleaning the air cleaner filter mounted at the
bottom
of the canister. The filter requires replace­
ment at
12,000
mile intervals. Refer to Section

E,
Par. E-9 for service procedure.

B-25.
Oil Bath Air Cleaner
Some 'Jeep' Universal vehicles are equipped with

an
oil bath type air cleaner.
This
type air cleaner
thoroughly removes all dust from the air before it enters the carburetor, if it is properly serviced.

When
the vehicle is operated under normal condi­
tions the air cleaner must be serviced at regular

intervals
as care of the air cleaner is extremely 13