1953 JEEP DJ spark plugs

wiper size automatic transmission spare tire windshield wipers bulb radiator

Page 188 of 376

JEEP DJ 1953 Service Manual
H

ELECTRICAL
SYSTEM
colder plug may be desirable. However, under- or
over-heating is usually caused by factors other than the type of
spark
plugs and the cause should be determined before cha

H

ELECTRICAL
SYSTEM
colder plug may be desirable. However, under- or
over-heating is usually caused by factors other than the type of
spark
plugs and the cause should be determined before changing plugs. The design of the
engine
calls for plugs equivalent to Champion

J-8
for F4
engines
and
A.C.
44S or
UJ12Y
Champ

ion for the V6 engines, (as installed in production)
though any factor that consistently affects
engine
operating temperature may cause this requirement
to change. Overheating may be caused by in sufficient tightening of the plug in the head, which interferes with the flow of heat away from the firing

tip.
If this is the case, the plug gasket
will
show very
little flattening. Over-tightening, in
turn,
will
pro duce too easy a heat flow path and result in cold
plug operation.
This
will
be evident by excessive
flattening
and
deformation of the gasket.
Prevailing
temperatures, condition of the cooling system, and

air-fuel
mixture can affect the
engine
operating temperature and should be taken into consideration.
H-34.
GENERATOR
— F4
ENGINE

The
generator is an air-cooled, two-brush unit

which
cannot be adjusted to increase or decrease output. For replacement,
voltage
regulator and generator must be matched for
voltage
and capa

city,
polarity, and common source of manufacture.
Otherwise,
either a
loss
of ampere capacity or a

burned
out generator
will
result. Generators for

these
vehicles are 12-volt. Par. H-l explains the 12-volt system. Refer to the specifications at the
end of this section for information on correct generator rating for a specific model series.
The
circuit
breaker,
voltage
regulator, and current-

limiting
regulator are built into one combination

unit.
Because the regulator and battery are part
of the generator
circuit,
the output of the generator
depends upon the
state
of charge and temperature
of the battery.
With
a discharged battery, the
output
will
be high, decreasing proportionally as the battery
becomes
charged. For service informa
tion covering current regulator see Par. H-41.

H-36.
Generator
Maintenance

A
periodic inspection should be made of the charg
ing
circuit,
Fig. H-l9. The interval
between
these
checks
will
vary
depending upon type of service.
Dust,
dirt
and high speed operation are factors 10541

FIG.
H-19—CHARGING
CIRCUIT

1—
Battery
4-—Starter Switch

2—
Voltage
Regulator 5-—Charge Indicator

3—
Generator
which
contribute to increased wear of bearings

and
brushes.

Under
normal conditions a check should be made
each 6000 miles
[9.600
km.].

A
visual inspection should be made of all wiring,
to be sure there are no broken or damaged wires.

Check
all connections to be sure they are tight and

clean.

Should
the commutator be rough or worn the
armature
should be removed and the commutator

turned
and undercut. See Par. H-37.
The
brushes should slide freely in their holders.

Should
they be oil soaked or if they are worn to

less
than one-half their original length they should
be replaced. When new brushes are installed they should be sanded to provide
full
contact with the
commutator. Generators should not be checked for
output until the brushes are seated.

Brush
spring tension is important. High tension causes
rapid
brush and commutator wear while
low tension causes arcing and reduced output.
Test
the tension with a spring scale.
Check
the
specifications section at end of this section for

correct
spring tension for generator in question.
H-36.
Generator Disassembly
•
Refer to Fig. H-20:
Before beginning disassembly of the generator to

correct
electrical system malfunctions proceed with
inspection and
test
procedures as detailed in Par.

H-46
thru
H-62. If it is definitely determined that trouble exists within the generator, which necessitates dismantling, proceed as follows. Remove the two frame screws in the commutator
end plate and remove the end plate assembly. Next
pull
the armature and drive head complete

from
the generator housing. Remove the generator pulley from the armature by removing the nut

and
washer. Do not
lose
the Woodruff key when
the pulley is removed. After this, remove the drive
end head assembly which includes the oil seal and
bearing.
To remove the bearing, remove the three
screws and lockwashers in the grease retainer and remove the retainer and felt washer, after which,
remove the bearing, oil guard and felt washer.
H-37.
Armature

If
the commutator is rough or worn,
turn
it down

in
a lathe. After turning, the mica insulation be tween the
segments
should be undercut to a depth of 34* [0,8 mm.].
To
test
the armature for a ground, connect one

prod
of a
test
lamp to the core or shaft (not on

bearing
surface) and touch each commutator
seg
ment with the other prod. If the lamp lights, the

armature
segment
is grounded and the armature must be replaced.

To
test
for short in armature coils, a growler,

Fig.
H-21, is necessary. Place the armature on the growler and lay a thin steel strip on the armature

core.
The armature is then rotated slowly by hand

and
if a coil is shorted, the steel strip
will
vibrate.

Should
a coil be shorted the armature must be
replaced.

If
precision
test
equipment is available, the cus

tomary
accurate
tests
can be made in accordance 188

Page 224 of 376

JEEP DJ 1953 Service Manual
H

ELECTRICAL
SYSTEM
H-152.
ELECTRICAL
SPECIFICATIONS—Continued

HURRICANE DAUNTLESS
V-6
DAUNTLESS
V-6 ENGINE
MODEL -
F4
ENGINE
ENGINE
LATE
MODELS

EARLY
MODELS
IGNITION
COIL

H

ELECTRICAL
SYSTEM
H-152.
ELECTRICAL
SPECIFICATIONS—Continued

HURRICANE DAUNTLESS
V-6
DAUNTLESS
V-6 ENGINE
MODEL -
F4
ENGINE
ENGINE
LATE
MODELS

EARLY
MODELS
IGNITION
COIL
BALLAST
]Make Delco-Remy
Prestolite Prestolite
Model
None

1957154

PU
5003

PU
5003

Ohms • • 1.80 @
80°F.

.495 - .605 @
75°F.

.495 - .605 @
75°F.

1.80 @
80°F.

.638 - .835 @
212°F.
.638 - .835 @
212°F.

DISTRIBUTOR:
Prestolite Delco-Remy Prestolite Prestolite
Model
•
(a)
LAY
4012, 4401

1110376

I
AT
4501 or
IAT
4502A
(b)
I
AY
4401A, 44011

IAT
4502

Breaker
Point Gap (b)
.020"
[0,508
mm.] .016"
[0,406
mm.] .016"
[0,406
mm.]
.016"
[0,406
mm.]

Breaker
Arm Tension. ..... 17 to 20 oz.
19 to 23 oz. 17 to 22 oz. 17 to 22 oz.
[482 a 567 gr.] [538 a 652 gr.] [482 a 624 gr.]
[482 a 624 gr.]

42° 29°
to 31°
29°
±3°
29°
±3°

Max.
Auto Advance
(Crankshaft
Degrees) •(a)
11°
@ 1,700 rpm.

13°
to
15°
at 1,950 rpm.
16°
@ 1,800 rpm.
21°
(2 1,800 rpm.

(Crankshaft
Degrees)
(b)
13.5°
@ 1,700 rpm.

26°
@
4200
rpm.
32°
@
4200
rpm.

Max.
Vac. Advance go
(Distributor Degrees)., . .
None

8° 8°
go
Condenser Capacity. . .25 to .28 mfd. .18 to .23 mfd. .25 to .28 mfd. .25 to .28 mfd.

TIMING:
Crankshaft
See
Note

See
Note
See
Note
See
Note

Mark
Location............
Crankshaft
Pulley

Crankshaft
Pulley

Crankshaft
Pulley

Csankshaft
Pulley

Firing
Order
1-3-4-2

1-6-5-4-3-2
1-6-5-4-3-2 1-6-5-4-3-2

SPARK PLUGS:
Make
Champion

A.C. A.C.
or Champion
A.C.
or Champion

J8
44S
44S or UJ 12Y 44S or UJ 12Y

Thread
14 mm.
14 mm. 14 mm. 14 mm.

Thread
Reach
Vz"
[9,47 mm.]
%"
[9,47 mm.]

¥%"
[9,47 mm.]
V8" [9,47 mm.]

Gap
.030"
[0,762
mm.]
.035"
[0,900
mm.] .035"
[0,900
mm.] .035"
[0,900
mm.|

LAMP BULB TRADE
NUMBERS:

Headlight 6012
6012 6012 6012

Parking
and Directional Signals. 1157NA
1157NA 1157NA 1157NA

License
Plate Light........ 1155
1155 1155 1155

Marker
and Reflector 194
194 194 194

INDICATOR LIGHTS:
57 57 57 57
Directional Signals........ 57
57 57 57

Charge
57
57 57 57
57 57 57 57
1156 1156 1156 1156
Instrument Cluster 57 57 57 57

Warning
— 4 Way Flasher. . 57
57 57 57

Brake
Warning Light 57
57 57 57

FUSE
DATA:
Heater 9 amp. 9 amp. 9 amp. 9 amp.

Backup
14 amp. 14 amp. 14 amp. 14 amp.

WS/Wiper.
14 amp. 14 amp. 14 amp. 14 amp.
Directional Signal 9 amp. 9 amp. 9 amp. 9 amp.
4-Way Flasher 14 amp. 14 amp. 14 amp. 14 amp.

Brake
Warning Light 9 amp. 9 amp. 9 map. 9 amp.

FLASHER
DATA:
Directional Signals. 144
144 144 144

Hazzard
Warning. 170
170 170 170

NOTE:
0°
T.D.C.
on Distributor
models
IAY 4401A, IAY 4401B, IAT 4502A.

NOTE:
5°
B.T.C.
on Distributor
models
IAY 4012, IAY 4401, IAT 4501, IAT 4502,
1110376.
224

Page 362 of 376

JEEP DJ 1953 Service Manual
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

Page 363 of 376

JEEP DJ 1953 Service Manual
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 Minimu

'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

Page 372 of 376

JEEP DJ 1953 Service Manual
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 Ignit

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

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