timing belt JEEP DJ 1953 Owner's Manual

G
COOLING SYSTEM
12761

FIG.
G-10—WATER
PUMP—

CROSS-SECTIONAL
VIEW
—
DAUNTLESS
V-6
1—
Hub

2—
—Shaft
and Bearing
3—
Cover

4—
Impeller

5—
Ceramic
Seal
6—
Seal
Assembly front end of the pump body. Position the seal,

washer,
and pump seal on shaft flush against the ground seat in the water pump body. Place the

impeller
on an arbor press and press the long end
of the shaft into the impeller until the end of the shaft is flush with the hub of the impeller. Support
the assembly on the impeller end of the shaft and
press the pulley hub on the shaft until the shaft end is flush with the pulley hub. Move the shaft

in
the pump body to align the retaining wire
grooves
in the bearing and pump body and place
the bearing retaining wire in position.

G-l
5. Water Pump Removal and Replacement — Dauntless V-6 Engine

Drain
the cooling system. Remove the fan belt and remove the cooling fan and pulley from the hub on
the water pump. Disconnect the
hoses
from the
water
pump. Remove the cap screws that secure
the water pump to the timing chain cover; remove
the water pump. Do not disassemble the water

pump;
it is serviceable only as an assembly. When

replacing
the water pump, torque the water pump cap screws 6 to 8 lb-ft. [0,829 a 1,106 kg-m.].

G-16.
Antifreeze Solutions

When
water freezes it expands approximately 9%

in
volume. When water, confined in a cooling sys­
tem, freezes it exerts tremendous pressures causing
serious damage. To prevent freezing, antifreeze can
be added to the water to lower its freezing point.

The
two
types
of antifreeze commonly used today have either a methanol or ethylene glycol base,

and
contain corrosion inhibitors. The only anti­
freeze recommended for the cooling system of

'Jeep'
vehicles is ethylene glycol (permanent type).

Methanol
base antifreeze evaporates with the water
when the vehicle is operated at warmer tempera­
tures and requires more attention to avoid
loss
of
protection. Ethylene glycol base antifreeze seldom
evaporates at normal operating temperatures.

Methanol
solution is injurious to vehicle finishes.
Should
any be spilled on the vehicle, it should be
washed off immediately with a
good
supply of cold water without wiping or rubbing. Under ordi­

nary
conditions, ethylene glycol is not injurious to
vehicle finishes.

Warning.*
Drinking
ethylene glycol antifreeze or its
solutions can be harmful or fatal. Do not use anti­
freeze containers for
food
or beverages.

A
table in Par.
G-2
2
gives
the protection obtained
by the addition of various amounts cf ethylene glycol.
Before installing antifreeze, inspect the cooling sys­
tem to be sure it is clean, leak-proof, and otherwise

in
proper operating condition.
Drain
the cooling system, see Par. G-3. Pour in 3 quarts [3 ltr.] of

clean
water, add the required quantity of anti­ freeze, then add clean water to within 1" [2,54 cm.] of the top of the overflow pipe to allow for expan­
sion when hot. Run the
engine
until it is
warm.

Then
recheck the solution level.
Check
the anti­
freeze protection with a hydrometer reading.

G-l7.
Inhibited Coolant Solutions

All
'Jeep5 vehicles equipped with either the
Hur­
ricane
F4 or Dauntless V-6
engine
should use only

inhibited
year-round, permanent-type
engine
cool­
ant
solutions that are formulated to withstand two

full
calendar years of normal operation without

draining
or adding inhibitors. The
engine
cooling
system should be completely drained and the
rec­
ommended coolant installed every two years. Be-
fo
a
installing the permanent-type solution, inspect the cooling system to be sure it is clean, leakproof,

and
in proper operating condition.

Note:
Water alone, methanol, or alcohol-type anti­
freeze is definitely not recommended for 'Jeep*
Vehicles.

G-l8.
Fan Belt

The
fan, water pump, generator or alternator are
driven
by a V-belt. The drive of the V-belt is on
the side of the V. A fan belt that is too tight
will

cause
rapid
wear of the alternator or generator and
water
pump bearings. If the belt is too
loose,
it may
slip
preventing the water pump from properly cool­
ing the
engine
or the generator or alternator from
properly
charging the electrical
circuit.
Use fan belt
tension
gauge
Tool W-283 to properly adjust belt.

The
fan belt is properly adjusted when it can be
deflected Vi" [13 mm.] with strong thumb pres­

sure
applied midway
between
the fan and alter­

nator
pulleys.
Check
this adjustment and inspect the condition of the fan belt at each
engine
lubri-
168

G
COOLING SYSTEM G-20.
SERVICE DIAGNOSIS

SYMPTOMS
PROBABLE REMEDY

Overheating:
Lack
of Coolant Refill radiator
Thermostat inoperative . Replace thermostat
Water
pump inoperative. Overhaul or replace
Incorrect
ignition or valve timing. Set
engine
timing
Excessive piston blowby Check pistons, rings and cylinder walls
Fan
belt
broken or badly worn Replace
belt

Radiator
clogged
Reverse flush and clean
Air
passages
in core
clogged
Clean with water and air pressure
Excessive carbon formation. Remove carbon from cylinder head(s) Muffler
clogged
or
bent
exhaust
pipe
Replace damaged part

Loss
of Cooling
Liquid:
Loose
hose
connections
Tighten
connections

Damaged
hose
Replace
hose

Leaking
water pump Overhaul or replace

Leak
in radiator Remove and repair
Leaky
cylinder head
gasket
Replace
gasket
Crack
in cylinder block. Small crack can be closed with
Radiator
or Block Sealer

G-21. COOLING SYSTEM SPECIFICATIONS

Radiator
Cap:
Relief
Pressure

Vacuum
Valve Release.
Thermostat:
Rating

Starts to Open

Fully
Open

Water
Pump:
Type.

Drive

Radiator:

Type

Cooling System Capacity: Without Heater

With
Heater..

Fan:
Number of Blades Diameter

Drive
Belt: Angle of V

Length
Width
HURRICANE
F4
7 and 15 psi. [0,5 kg-cm2 and 1,05 kg cm2]
lA to 1 psi. [0,04 a 0,07 kg-cm2]

190°F.
[87,8°C]
180°F.
[82°C]

202°F.
[94°C]

Centrifugal
V-Belt

Tube
8s Fin
11 qt. [10,4 ltr.] 12 qt. [11,5 ltr.]
15" [38 cm.]
38°

42%" [108 cm.] [1,74 cmJ
DAUNTLESS
V-6 15 psi. [1,05 kg-cm2]
1 psi. [0,07 kg-cm2]

190°F.
[87,8°C]
180°F.
[82°C]

202°F.
[94°C]

Centrifugal
V-Belt

Tube
& Fin
9 qt. [8.5 ltr.]
10 qt. [9,4 ltr.]
4

\SbA"
[39,7 cm.]

38°

43.92"
[111,5
cm.] Vg"
[0.952
cm.] G-22. ANTIFREEZE CHERT

Quarts
i
Quarts
Ethylene Glycol

U.S.
Imperial
Liters
Fahr.
Cent.

10-Quart
System

2
m
2

16°
-
8.8°

3
2V2
2%
4°

-15.5°

4
3H
-12°

-24.4°

5 4M -34°

-36.6°

6
5

5Vs
-62°

-52.2°

11-Quart
System

2 2

18° -
7.6°

3 2H
2%
8°

-13.3°

4
3%
-
6°

:
-21.10

5 4M 4M -23°

-30.5°

6
5

SVs
-47°

-43.8°

12-Quart
System

2
1 m 2 1

19° ;
- 7.2°

3
2*A
10°
!
-12.2°

4
I
3H
3M 0°
;
-17.7°

5 !
4M 4^ :
-15°

s
-26.1°

6 1 5
5%
-34°

-36.6°
170

u

MISCELLANEOUS
U-ll. SPECIAL TOOLS

Below are listed the
tools
applicable to
models
covered in this manual. These special
tools
are
essential not
only
for the
time
they
will
save
but

also
because
many
operations
described cannot be performed
without
them.

Note;
Tools W-274, W-283, and W-285 are univer­

sal
and can be used on all
engines.

Tool
Description
HURRICANE
F4
ENGINE

W-172 Puller, Timing
Gear,
U-Joint Flange, Vibration Damper W-231 Kit, Flywheel Dowel Installing
W-238 Driver, Intake and Exhaust Valve Guide

W-2
74 Pliers, Spark Plug Terminal Removal and Installing W-283 Gauge, Fan Belt Tension W-285 Studs, Oil Pan Gasket Aligning
C-690 Scale and Gauge, Piston Fitting

DAUNTLESS
V-6
ENGINE

W-274 Pliers, Spark Plug Terminal Removal and Installing
W-283 Gauge, Fan Belt Tension W-285 Studs, Oil Pan Gasket Aligning W-323
Rear
Main Bearing Cap Remover Bolt
W-338 Piston Pin Remover and Installer Set
J-6047-1
Support, J-6047-3 Spring,
J-6047-4
Driver, J-6047-5
Collar,
J-6047-20
Pilot
C-690 Scale & Gauge, Piston Fitting
J-5127-2 Carburetor Float Gauge
J-5830-1
Reamer, .004"
[0,102
mm.] Oversize

Electrical
Group

C-3858 Installer, Rotor, Housing and Shaft Bearing Assembly
C-3935 Driver, Alternator Rotor Bearing (Small) C-3936 Puller, Alternator Rotor Bearing (Small)
C-4068 Puller, Alternator Rotor Bearing (Large)

Transmission
Group

KF-128-A
Driver, Main Drive Shaft Bearing W-166 Arbor &
Sleeve,
Countershaft
Needle
Bearing Aligning
W-193 Arbor, Countershaft
Needle
Bearing Aligning W-194 Plate, Transmission Main Shaft Retaining
W-329 Puller — Main Drive
Gear
and Mainshaft Bearing (used with SP-5350 Adapters)
W-331 Driver Set — Main Drive
Gear
and Mainshaft Bearing (used with SP-5361 Driver Heads)
W-334 Thrust Yoke Tool — Second-Third Synchronizer Clutch Protecting W-335 Arbor — Countershaft
Needle
Bearing Aligning
W-336 Arbor — Reverse Idler Shaft
Needle
Bearing Aligning
C-3105 Driver, Mainshaft
Rear
Oil Seal (2WD)

Transfer Case
Group

W-130 Thimble & Driver, Shifter Rod Oil Seal
W-131 Thimble & Driver, Pinion Shaft
Rear
Bearing Cone
W-133 Driver,
Speedometer
Drive Pinion Bushing W-139 Driver, Output Shaft Front Bearing Cone Removing
W-141 Ring, Output Shaft Front Bearing Cone Removing
W-143 Driver, Output Shaft Front &
Rear
Oil Seal Installer W-176 Puller, Shift Rod Oil Seal
W-192 Pilot Pin, Transfer Case Intermediate
Gear
Thrust
Washer
W-251 Puller, Pinion Shaft Oil Seal, Transfer Case Front and
Rear
Oil Seal Removing

Universal
Joint Group

W-162 Tool, U-Joint Flange Installer
W-220 Jig & Bushing, Power-Take-Off U-Joint Pin Remover & Installer
C-3281 Wrench, U-Joint Holding 360