water pump JEEP CJ 1953 Service Manual
[x] Cancel search | Manufacturer: JEEP, Model Year: 1953, Model line: CJ, Model: JEEP CJ 1953Pages: 376, PDF Size: 19.96 MB
Page 5 of 376
'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
Page 7 of 376
'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
Page 13 of 376
'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
Page 15 of 376
'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
Page 18 of 376
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
Page 33 of 376
'Jeep*
UNIVERSAL
SERIES
SERVICE
MANUAL
C
FIG.
C-2
7—FAN
BELT
—
DAUNTLESS
V-6
ENGINE
e. Adjust mixture by turning idle mixture screws
out (counterclockwise) until a loss of engine speed
is indicated; then, slowly
turn
both mixture screws
in
clockwise (leaner) until maximum speed (RPM)
is reached. Continue turning in (clockwise) until a slight drop in speed (RPM) is noted. Make certain
both mixture screws are adjusted equally.
This
will
ensure a "lean as possible" mixture adjustment.
Readjust
idle
stop
screw to idle engine at the
specified
R.P.M.
Note:
This
method of adjusting idle mixture must
be used to keep hydrocarbon and carbon monoxide
emissions to a minimum.
Note:
No fast idle speed adjustment is required.
Fast
idle is controlled by the curb idle speed ad justment screw. If the curb idle speed is correctly set, the fast idle speed
will
be correct.
C-26.
Dash
Pot
Adjustment
Refer
to Section
E, Par.
E-44 for proper carburetor
dash
pot adjustment procedure.
C-27.
Check
Fan
Belt
The
fan belt drives the fan, alternator, and water
pump.
See Fig. C-27.
Inspect
the fan belt for serviceability and proper
tension. The tension should be checked with the
Belt
Tension Gauge, W-283. The correct tension on a used belt is 70 to 80 pounds [31,7 a 36,2 kg.]
and
on a new belt 110 to 120 pounds [49,8 a 54,5 kg.]. When preparing for delivery of new car,
the belt strand tension should be 80 to 110 pounds [36,2 a 49,8 kg.]. When installing a new belt, adjust
the strand tension 110 to 120 pounds [49,8 a 54,5 kg.].
Adjust
the fan belt tension by loosening the clamp
bolt on the alternator brace and swinging the alter
nator
away from the engine until proper belt ten
sion is obtained.
Then
tighten the clamp bolt.
Note:
If no
gauge
is available approximate correct
tension is obtained when the thumb pressure mid
way between the pulleys causes the belt to flex
y%
inch
[IV4
cm.].
C-28.
ROAD TEST VEHICLE
After
completing the tune-up, road
test
the vehicle for power and overall performance. Make neces
sary
adjustments.
Note:
Engine run on or "dieseling" is a condition
in
which combustion continues to take place after
the normal ignition
spark
from the distributor has
been shut off by turning off the ignition switch. It is generally caused by excessive engine idle speed
in
combination with retarded ignition timing, en gine heat soak or the use of low octane fuel.
Should
engine dieseling (engine running after igni
tion key is turned off) be experienced on V-6 engine equipped vehicles, installation of Idle Stop
Valve
Kit
Part
No. 991722
will
correct the
difficulty.
33
Page 34 of 376
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
Page 37 of 376
'Jeep9
UNIVERSAL SERIES SERVICE
MANUAL
D HURRICANE
F4
ENGINE
Contents
SUBJECT
PAR.
GENERAL...
D-l Description D-2
Engine
Ground Strap D-4
Engine
Mountings D-3
ENGINE REMOVAL
D-5
ENGINE DISASSEMBLY
D-6
Camshaft
.......
D-28
Clutch
D-24
Crankshaft.
D-26
Crankshaft
Pulley. D-l2
Cylinder
Head. .D-17
Distributor.
.D-13
Exhaust
Manifold D-8
Exhaust
Valves and Springs D-2
7
Flywheel.
. D-25
Front
End Plate D-23
Oil
Filler
Tube D-9
Oil
Gallery Plugs D-30
Oil
Pan. . ...D-19
Oil
Pump D-l4
Piston and Connecting Rods. . . D-20
Ream
Cylinder Bore Ridges. D-l8
Rocker
Arm Assemblies D-l6 Thermostat D-ll
Timing
Gear
Cover . . D-21
Timing
Gears D-22
Valve
Tappets D-29
Ventilation Valve D-l5
Water
Outlet Fitting D-10
Water
Pump D-7
ENGINE INSPECTION
AND
REPAIR.
.D-31
Camshaft
and Bearings. D-51
Camshaft
End-Play
. . .D-53
Camshaft
Front Bearing Replacement..... D-52
Checking
Connecting Rod
Crank
Pins D-42
Checking
Crankshaft Alignment .
.
D-40
Checking
Main Bearing Journals. D-41
Cleaning.
. D-33 Connecting Rod Bearing Inspection D-48
Connecting Rod Bearings D-47 Connecting Rod Side Play D-50
Core
Hole Expansion Plug D-72
Crankshaft
.
.
D-38, 39
Crankshaft
Main Bearing Inspection D-44
Crankshaft
Main Bearings D-43
Crankshaft
Rear
Bearing Seal D-63
Cylinder
Block D-32
Cylinder
Bores D-35
Cylinder
Head. . . D-73
Exhaust
Valve Seat Insert Replacement. .
.
D-60
Fitting
Crankshaft Main Bearings
Using
Plastigage
D-45
Fitting
Crankshaft Main Bearings
Using
Shim Stock D-46
Floating
Oil Intake D-64
Flywheel.
. . .D-67
Flywheel
Housing D-71
SUBJECT
FAR.
Flywheel
Inspection. D-6 8
Flywheel
Pilot Bushing D-70 Inspection D-3 4
Inspection of Valves, Springs and Guides. .D-57
Installing
Connecting Rod Bearings....... D-49
Oil
Pan D-66
Oil
Pump D-65
Piston Ring Application
Chart
D-3 7
Pistons, Rings, and Connecting Rods..... D-36
Refacing
Valves
.
D-58
Ring
Gear
Replacement D-69
Rocker
Arm Shaft Disassembly. D-75, 76
Rocker
Arm Shaft Reassembly.
.
D-77
Rocker
Arms D-74
Tappets and Cover. . D-62
Timing
Gears and Cover D-54, 55
Valve
Guide Replacement D-61
Valve
Seat Inspection and Refacing D-59
Valve,
Springs and Guides D-56
ENGINE REASSEMBLY
D-78
Camshaft
and
Thrust
Plate .D-81
Camshaft
Timing
Gear
D-91
Check
Crankshaft
End-Play.
............D-83
Clutch.
...D-89
Crankshaft
and Bearings................ D-82
Crankshaft
Pulley D-96
Crankshaft
Rear
Bearing Seal.. .
.
D-85
Crankshaft
Timing
Gear
D-84
Cylinder
Head D-98
Distributor
D-l
00
Flywheel
®. . .. D-87
Flywheel
Housing D-88
Front
End Plate D-86
Manifold.......
D-101
Oil
Filler
Tube D-102
Oil
Gallery Plug. D-79
Oil
Pan. D-97
Oil
Pump D-93
Pistons and Connecting Rods D-95
Rocker
Arm Assembly D-99
Spark
Plugs. .D-100
Tappets D-80
Timing
Gear
Cover D-94
Timing
Gear
Oil Jet D-92
Valves
and Springs ... D-90
Water
Outlet Fitting D-104
Water
Pump D-103
ENGINE INSTALLATION.
............D-105
FINAL IN-VEHICLE
ADJUSTMENTS.
.D-106
Check
Valve Timing . . D-109
Crankcase
Ventilation Valve. D-l 10
Oil
Filter
, . .
...D-lll
Valve
Adjustment D-107
Valve
Adjustment Procedure D-l08
SERVICE
DIAGNOSIS
D-112
SPECIFICATIONS D-l
13 37
Page 38 of 376
HURRICANE
F4
ENGINE
D-1.
GENERAL
This
section describes service and repair of the
F4
engine. The
engine
code
number shown in Fig.
A-3
is provided to identify the four cylinder engine.
The
meaning of the coded letters and numbers that
are
stamped on the water pump boss, at the front of the cylinder block, is given below.
Letter
to
Designate
Market
M
—
Military
E
—
Export
D
— Domestic
I
—
Industrial
&
Marine
Letter
to
Designate
Engine
Letter
to
Designate
Year
Built
R
— 1969
S
— 1970
T
— 1971
U—
1972
V
— 1973
W
— 1974
Numbers
to Designate
Compression
Ratio
F
— F4-134
Engine
63
67
•
71
-
6.3 to 1
•
6.7 to 1
-
7.1 to 1
Market
-
D
S F
(Domestic)
(1970)
Engine-
EXAMPLE
123 A B S
(F4-134)
Day- "L
Compression
Ratio
(6.7)
-
Service Engine (S)
Short
Block
(R)
-.010*
Oversize Pistons
(123rd)
-.010*
Undersize
Main
and
Rod Bearings
All
disassembly and assembly procedures are
presented in logical order, assuming a complete
engine
overhaul with
engine
removed from the vehicle. However, many of
these
procedures can
also be performed as on-vehicle services if vehicle
or
engine
components are removed to gain access
to parts involved.
Note:
Some
engines
are equipped with an exhaust
emission control system. Service information on
the components of this system is given in Section
F-l.
D-2.
Description
The
Hurricane
F4-134
engine
is an F-head, four-
cyiinder
engine
of combination valve-in-head and valve-in-block construction.
Large
intake valves
mounted in the head allow
rapid,
unobstructed
flow of fuel and air to the combustion chambers through short, water-jacketed intake passages.The
intake valves are operated by push rods through
rocker
arms. The exhaust valves are mounted
in
the block with through water jacketing to provide
effective
cooling. The exhaust valves are
operated by conventional valve tappets.
The
engine
is pressure lubricated. An oil pump
driven
from the camshaft forces the lubricant
through oil channels and drilled passages in the
crankshaft
to efficiently lubricate the main and
connecting rod bearings.
Lubricant
is also force
fed to the camshaft bearings, rocker arms, timing
gears, etc.
Cylinder
walls and piston pins are
lubricated
from spurt
holes
in the "follow" side of
the connecting rods.
Circulation
of the coolant is controlled by a
thermostat in the water
outlet
elbow cast as part
of the cylinder head.
The
cylinder head assembly when installed on the
engine
consists of the inlet valve guides, inlet valves, inlet valve springs, rocker arm and shaft assemblies, spark plugs, temperature indicator
fitting, water
outlet
fitting, and other assembled
parts.
The carburetor and air cleaner assembly
bolt to the top of the cylinder head. The rocker
arm
cover is attached to the top of the head to
enclose
the inlet valve mechanism.
The
engine
is equipped with a fully counterbalanced
crankshaft
supported by three main bearings. To better control balance, the counterweights are in
dependently forged and permanently attached to
the crankshaft with dowels and cap screws that are tack-welded.
Crankshaft
end play is adjusted by
shims placed
between
the crankshaft thrust washer
and
the shoulder on the crankshaft.
The
exhaust manifold is a separate unit. The intake
manifold is cast as an integral part of the cylinder
head and is completely water jacketed.
This
con
struction transfers heat from the cooling system
to the intake passages and assists in vaporizing
the fuel when the
engine
is cold. Therefore, there
is no heat control valve required in the exhaust manifold. Individual exhaust ports in the cylinder
block direct
gasses
into the exhaust manifold for unobstructed flow through the exhaust system.
The
pistons have an extra
groove
directly above
the top ring which acts as a heat dam or insulator.
As
is common practice with manufacturers,
some
engines
are built with oversize cylinder bores or undersize crankshaft journals. These
engines
are
considered standard as replacement parts of the
correct
sizes are supplied. Before ordering parts or
doing any work with a particular engine, it is important to check the
engine
code
number to
determine if oversize or undersize parts are re
quired.
Definite identification is given by a letter
stamped after the
engine
code
number. See Fig.
A-5
for location. The letters used and their mean ings are given here:
A
— .010*
[0,254
mm.] undersize main and
connecting rod bearings.
B
— .010"
[0,254
mm.] oversize pistons.
AB
—
Combination
of A and B.
S
—
Service
engine.
R
—
Short
Block.
Detailed specifications for the
Hurricane
F4
engine
are
at the end of this section.
Torque
specifications
for
engine
service are at the end of this manual in Section U. When adjustments are necessary, refer to
these
specifications so that factory clearances
are
maintained.
D-3.
Engine Mountings
The
front of the
engine
is supported by two rubber
Text continued on
page
41. 38
Page 40 of 376
D
HURRICANE
F4
ENGINE ®
® ® ® ®
®
® @> ® ® ®® ® (§) 11759
FIG.
D-2—HURRICANE F4-ENGINE
—
SIDE SECTIONAL VIEW
1— Fan
2— Water Pump
3— Pipe Plug
4— Water Outlet Fitting 5— Thermostat
6— Piston
7— Rocker Shaft Bracket
8— Rocker Arm Shaft
9— Rocker Shaft Spring
10—
Spark
Plug
11— Rocker Shaft Lock Screw
12—
Exhaust
Valve 13— Intake Valve
14— Intake Valve Spring
15— Intake Valve Guide
16— Rocker Arm
17— Intake Tappet Adjusting Screw
18— Rocker Arm Cover 19—
Oil
Line
20—
Cylinder
Head
21— Intake Valve Push Rod
22—
Exhaust
Valve Guide
23—
Exhaust
Manifold
24—
Exhaust
Valve Spring
25—
Cylinder
Block
26— Piston Pin 27—
Exhaust
Tappet Adjusting Screw 28—
Engine
Rear
Plate
29— Camshaft
30— Flywheel 31—
Crankshaft
Rear Bearing Seal
32—
Crankshaft
Rear Bearing
33— Intake Valve Tappet
34—
Crankshaft
35—
Crankshaft
Bearing Dowel
36—
Oil
Float Support
37—
Oil
Float
38—
Crankshaft
Center Bearing
39— Connecting Rod Bearing
40—
Oil
Pan
41— Connecting Rod
42—
Crankshaft
Front Bearing
43— Engine Front Plate
44—
Crankshaft
Gear
45—
Crankshaft
Oil Seal
46— Drive Pulley
47—
Crankshaft
Gear Spacer 48—
Oil
Jet
49— Bolt 50— Camshaft Gear Thrust Plate Spacer
51—
Camshaft Thrust Plate
52— Camshaft Gear
53— Fan-and-Generator Belt 40