1953 JEEP DJ water pump

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

'Jeep'
UNIVERSAL
SERIES SERVICE
MANUAL

G
cation period. It is
good
preventive maintenance to
replace a badly frayed, worn or cracked fan belt
before it breaks in operation.

To
replace the fan belt,
loosen
the attaching
bolts

at each generator or alternator brace-to-engine mounting and pivot the alternator or generator to­

ward
the
engine
to gain slack needed to install the new belt Remove the old belt. Position the new
belt over the fan pulley, over the crankshaft pulley,
then over the generator or alternator pulley.
Pull
the generator or alternator away from the
engine

until
belt tension is
firm.
Then tighten the generator

or
alternator mounting
bolts
and check the tension
as indicated above. Reset the generator or alternator as necessary for correct belt tension.
Finally,
torque
the generator or alternator mounting
bolts
25 to 35 lb-ft. [3,4 a 4,8 kg-m.].

Note:
On the Dauntless V-6
engine
when adjusting
the fan belt tension, the alternator mounting
bolts

should be torqued 30 to 40 lb-ft. [4,14 to 5,53

kg-m.].
If a fan belt tension
gauge
(W-283) is
avail­

able, proper tension should be 80 pounds [36,2 kg.].

G-l
9. Engine Overheating

An
engine
will
not be damaged by high coolant
temperatures unless the coolant boils. The pres­

surized
cooling system on the 'Jeep' vehicles raises the boiling point of the coolant solution. Should
overheating be encountered, and the fault is be­
lieved to be in the cooling system check for the
following:

a.
Proper coolant level. See
Filling
Cooling Sys­
tem Par. G-2.
b. Poor air flow.
Check
for dirty radiator core. (See Radiator Par. G-5).
Check
for faulty belt
pulley operation, worn or
loose
fan belt, or dam­ aged fan.
Clean,
repair, replace or adjust as neces­

sary.

c. Foaming coolant.
Check
for air leaks at water
pump,
hose
connection and filler cap. Tighten, re­

pair
or replace as necessary.

d.
Surging or "after boil".
Check
pressure cap and
replace if valves or gasket are faulty.
e.
External
leaks.
Check
the following for leaks:
Hoses and clamps, water pump, radiator, head gas­
ket, core plugs and drain cocks, as well as the cylin­ der head or block for
cracks.

f.
Internal
leaks.
Check
for faulty head gasket,
cracked
cylinder head or block.
g. Poor coolant flow.
Check
hose
condition, water pump, fan belt, and repair or replace as necessary. Inspect block for rust or scale, and clean and flush
the system, if necessary.

h.
Check
the temperature
gauge.
169

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-12.
STANDARD
AND
RECOMMENDED TOOLS
(Continued)

Tool
Description
CLUTCH

W-296 Fixture — Adjusting

TRANSMISSION

C-3201
- A
Lo-Jack
— Floor Type

AXLE

C-637 Puller — Axle Shaft & Oil Seal

STEERING

DD-428 Gauge — Camber & Caster
DD-435 Turntables — Wheel Alignment C-3479 Gauge & Scribe — Toe-in Checking

BRAKES

C-416 Clamps — Brake Cylinder Retaining C-3080 Hone — Brake Cylinder
C-3496-B Bleeder — Hydraulic Pressure Type C-3785 Remover & Installer — Brake Return Spring
C-3920 Micrometer — Brake Drum Checking
U-13.
ENGINE TORQUE SPECIFICATIONS HURRICANE
F4
ENGINE

Pounds - Feet
kg-m.

30-40
4,1
a

5,5

Camshaft
Thrust Plate Bolt
20-26

2,8
a
3,6

Clutch
Control
Ball
Stud — [7,93 mm.]
35-45

4,8
a
6,2
Connecting Rod Cap Bolt Nut — y8" [9,53 mm.|
35-45

4,8
a
6,2

60-70
8,3
a
9,7

Cylinder
Head to Block Bolts
60-70
8,3
a
9,7

45-55
6,2
a
7,6

29-35
4,0
a
4,8

Flywheel
to Crankshaft Bolt. 35-41
4,8
a

5,7

Fuel
Pump Mounting Bolts 13-17 1,8
a
2,4
Alternator Bracket to Cylinder Block.
25-35
3,5
a
4,8

29-35
4,0

a
4,8

Main
Bearing
Caps.
.
65-75
9,0
a
10,4

Oil
Pan
Drain
Plug
25-35

3,5
a

4,8
9-14 1,2
a

1,9
Piston Pin
Lock
Bolt 35-41
4,8
a

5,7

30-36
4,1
a

5,0

Spark
Plugs to Cylinder Head
25-33

3,5
a
4,6
Starting Motor Mounting Bolt.
20-25
2,8
a
3,5
7-10 0,9
a
1,4

Water
Outlet Elbow to Cylinder Head
20-25
2,8

a
3,5

Water
Pump to Cylinder Block 12-17
1,7
a

2,4

NOTE:
Turn
the connecting rod cap nut locks (inverted type, pressed
steel)
finger
tight
and then
tighten
% turn more with wrench
362

'Jeep*
UNIVERSAL SERIES
SERVICE
MANUAL

U ENGINE TORQUE SPECIFICATIONS

DAUNTLESS
V-6
ENGINE
Pounds
- Feet
kg-m.

80-110
11,1 a 15,2

30-40
4,2 a 5,5

65-85
9,0 a 11,8
140 Minimum 19,4
18-25 2,5 a 3,4

50-65
6,9 a 9,0
10-16 1,4 a 2,2
14-18 1,9 a 2,5
8-12 1,1 a 1,7

30-40
4,2 a 5,5
6-9 0,8 a 1,2
6-9 0,8 a 1,2

20-30
2,8 a 4,2
10-15 1,4 a 2,1

25-33
3,5 a 4,6
6-9 0,8 a 1,2
17-23 2,4 a 3,2
17-23 2,4 a 3,2

45-55
6,2 a 7,6
15-20 2,1 a 2,8
10-15 1,4 a 2,1
17-23
Lb.
In. 0,195 a
0,265

kg-cm.
17-23 Lb. In. 0,195 a
0,265

kg-cm.
17-23 2,4 a 3,2

50-75
6,9 a 10,4

40-55
5,5 a 7,6
3-5 0,4 a 0,7

25-35
3,5 a 4,8

30-40
4,1 a 5,5
18-25 2,5 a 3,5

30-40
4,2 a 5,5

30-40
4,2 a 5,5
10-12 1,4 a 1,7
10-12 1,4 a 1,7
18-20 2,5 a 2,8

26-30
3,6 a 4,2

30-40
4,2 a 5,5
6-9 0,8 a 1,2
10-15 1,4 a 2,1

30-40
4,2 a 5,5
10-15 1,4 a 2,1

Crankshaft
Bearing Caps to Cylinder Block.
Connecting Rods.

Cylinder
Head to Cylinder Block
Vibration Damper to Crankshaft

Fan
Driving Pulley to Vibration Damper
Flywheel to Crankshaft
Oil
Pan to Cylinder Block

Oil
Pan Drain Plug
Oil
Pump Cover to Timing Chain Cover. . .

Oil
Pump Pressure Valve Cap
Oil
Screen Housing to Cylinder Block
Oil
Pan Baffle to Cylinder Block

Oil
Gallery Plugs.

Filter
Assembly to Pump Cover
Timing
Chain Cover to Block
Water Pump Cover to Timing Chain Cover.

Fan
Driven Pulley Thermostat Housing to Intake Manifold. . . Intake Manifold to Cylinder Head

Exhaust
Manifold to Cylinder Head

Carburetor
to Intake Manifold

Air
Cleaner Stud

Air
Cleaner Wing Nut.

Fuel
Pump to Cylinder Block . . Engine
Mounting
Bracket to Cylinder Block

Fuel
Pump Eccentric and Timing Chain Sprocket to Camshaft
Rocker Arm Cover to Cylinder Head Rocker Arm Shaft Bracket to Cylinder Head
Alternator Bracket to Cylinder Head
Alternator Bracket to Water Pump Timing Chain Cover Alternator
Mounting
Bracket S.O. Alternator to Cylinder Head at Pivot Location.
Starting Motor to Block Starting Motor Bracket to Block
Starting Motor Brace to Starting Motor Distributor
Hold-down
Clamp

Spark
Plugs

Flywheel Housing to Cylinder Block

Timing
Chain Damper to Cylinder Block Bolt.
Bolt — Special
Moveable
Timing Chain Damper
Clutch
to Flywheel

Oil
Filter Element .' 363

ALPHABETICAL
INDEX

SUBJECT
PAR.

SUBJECT
PAR.

Ignition Cable Test C-l9 Ignition
Coil
C-20, H-19, H-31
Ignition Switch H-89 Ignition System H-3
Ignition
Timing
C-14, H-18, H-30 Ignition Wires C-18
Intake Manifold '." Dl-7, Dl-101
Instrument, Electrical H-122

L

License Plate Light H-l36
Lighting
System H-l25

Light
Switch, Main . H-l 26

Lubrication
B-l
Lubrication,
Body B-65

Lubrication
Maintenance Schedule B-8
Lubrication
of Optional Equipment B-69

Lubrication,
Off Highway B-79

Lubrication,
Special. B-2

M

Main
Bearings D-43, D-82, Dl-32, Dl-42, Dl-73

Main
Light Switch. H-l26
Maintenance, Clutch 1-2 Maintenance, Exhaust System.,
-
F-4
Manifold, Exhaust -F-6 Manifold, Intake D-7, Dl-101
Manifold Vacuum Check. .C-24 Master Cylinder, Brake B-40, P-2, P-20
Miscellaneous Data U-16 Mountings, Engine • • •
-
D-3, Dl-3
Muffler. F-9

O
Oil
Filter B-10, B-ll,
D-lll,
Dl-13, Dl-93

Oil
Pan D-19, D-66, D-97, Dl-29, Dl-51, Dl-77
Oil
Pump. D-14, D-65, D-93, Dl-19, Dl-50, Dl-87

P

Paint and
Trim
Plate • • A-7

Parking
Brake Adjustment P-ll
Parking
Lights H-133
Pilot Bushing, Crankshaft D-70, 1-8
Pintle Hook U-7
Pistons D-20, D-95, Dl-31, Dl-48, Dl-75 Piston Rings. • • •
•
D-37, Dl-47 Positive Crankcase Vent. B-13, C-6, D-110

Powr-Lok
Differential B-72, N-20
Primary
Circuit,
Electrical H-4 Propeller Shaft U-Joints .B-58, L-2, L-3 Propeller Shaft Specifications <:' L-7

R

Radiator
B-28, B-29, G-5

Radiator
Hoses. G-7

Radiator
Pressure Cap G-4

Rear
Axle. B-50, B-51, B-52, N-9

Rear
Axle Reassembly • N-l
7
Rear
Axle Disassembly N-l
2

Rear
Axle Pinion Adjustment N-l6

Rear
Axle Shaft N-2, N-3

Rear
Bearing Seal, Crankshaft D-63, D-85, Dl-62

Rear
Wheel Bearings B-56, B-57, N-4, Q-3
Regulator Test, Voltage H-47, H-71
Rocker
Arm Cover.. . Dl-65

Rocker
Arms D-16, D-74, D-99, Dl-60 Rotor, Alternator H-76, H-79

S

Seats
• T-8 Secondary
Circuit,
Electrical H-5
Shock Absorbers B-48, S-7
Solenoid Switch. H-l21 Special Lubricants B-2
Spark
Plugs C-4, H-33
Special Tools • U-ll

Speedometer
Cable B-60 Springs B-77, S-4, S-5

Spring
Bushings S-2

Spring
Pivot Bolts S-3

Spring
Shackles S^2

Spring
Specifications S-8 372 Starting Motor B-18, H-92, H-108
Starting Motor Bearings B-75
Starting Motor Bendix Drive H-105, H-106
Starting System H-7, H-88
Starting System Maintenance H-93 Stator, Alternator H-84
Steering • • •
•
O-l
Steering Arm P-10
Steering Column Adjustments 0-4
Steering Column and Wheel Service O-20 Steering Gear. . B-27, 0-22
Steering Gear Adjustment 0-5
Steering Gear Function 0-2
Steering Knuckle. B-27, M-8 Steering Linkage 0-14

Stop
Light Switch H-128
Switch, Heater U-10 Switch, Ignition H-89
Switch, Wiper Motor H-142

T

Tail
Light . H-134

Tail
Pipe F-10 Temperature Sending Unit G-10
Thermostat G-9
Timing
Chain Dl-22, Dl-66, Dl-84
Timing
Chain Cover Dl-20, Dl-67, Dl-86
Timing
Gears D-22, D-54, Dl-22, Dl-66, Dl-84

Timing,
Ignition. C-14, H-18, H-30

Tire
Service . •
•
Q-l
1

Toe-in Adjust 0-7, 0-8 Tools, Special. . .
........
U-ll Torque Specifications, Chassis U-14
Torque Specifications, Engine .U-13

Top,
Canvas. T-5

Trac-Lok
Differential N-24
Transfer
Case B-36, K-1
Transfer
Case Reassembly K-6

Transfer
Case Disassembly K-3

Transfer
Case Linkage - K-8

Transfer
Case Removal K-2 Transmission and Transfer Case. B-30, J-7 Transmission —
3-Speed
B-37, B-38, J-l
Transmission —
4-Speed
... J-20
Transmission Brake P-4 Transmission Brake Adjustment P-l
2

Transmission,
Cane Shift .J-8 thru J-19

Transmission,
Remote Shift J-4
Transmission Remote Shift Adjustment J-3
Transmission Specifications
-
J-27
Tune-Up
Sequence
C-2

Tune-Up
Specifications C-30

U

U-Joint, Front Axle . . B-54, B-55, M-7
U-Joint, Propeller Shaft B-58, L-l

Vacuum
C-24 Valves D-21, D-56, D-90, Dl-56, Dl-63

Valve
Adjustment D-107

Valve
Lifter Dl-57, Dl-81

Valve
Seats
D-59

Valve
Springs .D-56, D-90, Dl-63

Valve
Tappets C-8, D-29, D-62, D-80
Valve
Timing D-109
Vehicle Description A-2
Vehicle Identification A-3
Vehicle Serial Number. A-5

Vibration
Damper D-l2, D-96, Dl-17, Dl-70 Voltage Regulator. H-41, H-71

W

Water Pump G-ll thru G-15
Water Pump Bearings B-74
Wheels Q-l
Wheel Balancing Q-2 Wheel Bearing Adjustment Q-5, Q-6, Q-7
Wheel Brake Service P-6 Wheel Bearing Service Q-3
Wheel Cylinder, Brake P-21 Windshield T-3 Windshield Wiper Motor . .H-142

SM-1046
PRINTED
IN U.S.A.
110-CH6M