open hood 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 17 of 376
'Jeep'
UNIVERSAL SERIES SERVICE
MANUAL
B
Reinstall
the axle shafts, and
refill
the housings to
plug level using the universal joint lubricant
specified in
Lubrication
Specifications.
B-56.
Front
Axle Wheel Bearings
To
lubricate the wheel bearings, it is necessary
to remove, clean, repack, and adjust them. When
front wheel hubs and bearings are removed for
lubrication,
they should be thoroughly washed in a
suitable cleaning solvent. The bearings should be
carefully
dried and then given a thorough cleaning
and
inspection. Use a clean brush to remove all
particles
of old lubricant from bearings and hubs.
After
the bearings are cleaned, inspect them for
pitted races and rollers. Also, check the hub oil
seals.
Note:
Wheel bearing lithium base lubricants are
used at the factory for
initial
fill
of
these
bearings.
When
lithium base and sodium base lubricants are
mixed,
the result is a thinned-out mixture that
can
bleed through seals. It is therefore important
that lubricants with the correct base be used when
lubricating
the wheel bearings.
Should
leaks occur at wheel bearing seals, the leaks
may
be caused by a mixture of two
types
of
lubri
cants.
In such cases, the old lubricant should be
completely removed before new lubricant is added.
Wheel
bearings should be thoroughly cleaned,
lubricated
with lithium base and reinstalled.
Repack
the bearing
cones
and rollers with grease
and
reassemble hub in the reverse order of the
disassembly. Test the bearing adjustment as out
lined
in Section Q.
B-57.
Rear
Axle Wheel Bearings
The
Rear
wheel bearings an early models equipped
with
lubrication fittings with a vent opening
through the housings above each fitting should be
lubricated
sparingly, each
2,000
miles
[3.200
km.].
Use
a hand compressor and wheel bearing grease,
forcing
the grease through each lubrication fitting
until
it flows from the vent. Vent should be kept
clear
of obstruction or grease
will
back up into the
brakes.
Do not add grease after it flows from the
vent for it may be forced through the wheel key-
way
onto
the outside of the wheel and possibly
onto
the brake linings.
Rear
wheel bearings that do
not have lubrication fittings should be removed
each
12,000
miles
[19.200
km.] and the bearing
cleaned, inspected and repacked. Refer to proce
dure
in Par. B-56.
Note:
When servicing the Flanged Axle Unit
Bear
ing Assembly, refer to Section N, Par. N-5 for
proper
lubrication procedures.
B-58.
Propeller Shafts
and
Universal Joints
The
propeller shaft slip joints and universals should
be lubricated with a hand compressor grease gun so as to not damage the bearing seals. The units
should be lubricated with a
good
quality grease.
Refer
to the
Lubrication
Chart
for lubrication fre
quency and lubricant type and grade. B-59.
Lights
and
Controls
a.
Check
all interior and exterior lights and light
switches for proper operation, including: parking
lights, headlamps (high beam and low beam),
tail
lights, brake lights, directional lights, and in strument panel lights.
b.
Check
all instrument panel controls and
instru
ments for proper operation.
B-60.
Speedometer Cable
Remove the
speedometer
cable from its housing every
12,000
miles
[19.300
km.].
Clean
it thor
oughly and coat it with a
good
quality light graphite grease.
B-61.
Headlights
Refer
to Section H.
B-62.
Heater Controls
Apply
Lubriplate
130-A to all friction points and
pivot points on the heater controls panel unit as well as the pivot points at the dashpot. Apply
a
few drops of penetrating oil all along the Bowden
cable.
This
oil
will
penetrate into the center wire.
B-63.
Windshield Wiper and
Washer Controls
Lubricate
the friction points and the pivot points
on the windshield wiper transmission and linkage
arms
with a slight amount of
Lubriplate
130-A.
B-64.
Rotate Tires
Refer
to Section Q for the correct method of rotat ing the tires.
B-65.
Body Lube Points
•
Refer to Par. B-66 through B-68.
B-66.
Hood Hinge Pivot Points
Lubricate
the frictional points of the hood hinge
pivot points with a few drops of light-weight
engine
oil.
B-67.
Glove Compartment Door Latch
Sparingly
wipe
Lubriplate
130-A on the
glove
com
partment door latch.
B-68.
Tailgate Hinges
Lubricate
the friction points of the tailgate hinges
with
a few drops of light-weight
engine
oil.
B-69.
LUBRICATION
OF
OPTIONAL EQUIPMENT
B-70.
Pintle Hook
When
lubricating the vehicle, place a few drops of oil on the pintle hook and safety latch pivot pins.
B-7!.
Centrifugal Governor
Check
the oil level in the governor housing at each
vehicle lubrication. Use the same seasonal grade
oil
as is used in the
engine
and change oil at each
engine
oil change. Do not
fill
the housing above
the level indicating plug opening. Keep the vent
in
the filler plug open at all times. 17
Page 104 of 376
Dl
DAUNTLESS
V-6
ENGINE
e.
Connect electrical wiring harness to coolant
temperature sending unit. Connect two distributor leads to ignition coil. Connect fuel line
between
fuel pump and carburetor, vacuum
hose
between
distributor and carburetor, and crankcase vent
hose
to intake manifold
below
rear
of carburetor.
FIG.
D1-46—-INTAKE
MANIFOLD
INSTALLATION
1—Long Bolt 2—Open Bolt Hole
Dl-102.
ENGINE INSTALLATION
Install
the
engine
in the vehicle in the following
procedure listed
below:
a.
Attach suitable sling to
engine
lifting
eyes
and,
using a hoist, lift the
engine
from blocks or
engine
stand.
b. When
engine
is free of the stand lower it slowly
into
the
engine
compartment of the vehicle.
Note:
The
engine
and transmission must be lined
up to
engage
the main shaft and clutch plate spline
while sliding the
engine
rearward
into
the mounting
position.
c.
Install
and tighten up
bolts
securing
engine
to
flywheel housing.
d.
Install
and tighten front
engine
mounting bolts.
e.
Remove sling from the
engine.
I.
Connect exhaust pipes to right and
left
engine
manifolds.
g. Connect choke cable support bracket to
car
buretor.
h.
Connect
engine
fuel
hoses
and fuel lines at right
frame
rail.
I.
Connect fuel lines.
j.
Mount
engine
starter motor assembly to
engine.
k.
Connect battery cable and wiring to
engine
starter
motor.
I.
Connect
engine
wiring harnesses to connectors
located on
engine
firewall.
Note:
On
engines
equipped with exhaust emission
control, replace the air pump, air distributor mani
fold, and anti-backfire (gulp) valve. See Section F2.
m. Replace radiator, and secure with bolts,
n.
Replace and tighten right and
left
radiator sup
port rods.
0. Connect upper and lower radiator
hoses
to the
engine.
p. Connect alternator wiring harness from connec
tor at regulator,
q.
Replace air cleaner.
r.
Connect battery ground cable from the battery
to the
engine
and the
engine
ground strap,
s.
Replace the hood.
After
the
engine
is installed in the vehicle,
fill
radiator
with coolant and
engine
with oil (Refer to
Lubrication
Section B), then perform an
engine
Tune-up
and road
test
(Refer to Tune-up Sec
tion C).
Dl-103.
FINAL IN-VEHICLE ADJUSTMENTS
a.
Clean
battery terminals and check battery.
b.
Check
ignition wires and connections.
c. Service carburetor air cleaner.
d.
Service positive crankcase ventilation valve.
e.
Check
fuel lines.
f. Gap and install new
spark
plugs.
g.
Check
distributor
points
and capacitor; replace
if
necessary.
h.
Check
ignition (distributor) timing; reset if
necessary. 1.
Check
carburetor adjustments; reset if necessary,
j.
With
engine
fully warmed up, tighten cylinder
head and manifold
bolts
and nuts to specified
torque.
Check
cylinder head
gaskets
and
bolts
for
air
or coolant leaks.
Note:
Tightness of cylinder head
bolts
should be
checked and corrected after 500 miles [800 km.]
of normal operation and again at 1000 miles [1600
km.].
k.
Check
fan belt tension; adjust if necessary.
I.
Check
for and correct any oil leak, fuel leak or
coolant leak. 104
Page 149 of 376
'Jeep'
UNIVERSAL SERIES SERVICE
MANUAL
Fl
EXHAUST
EMISSION
CONTROL
SYSTEM
Contents
DAUNTLESS
V-6
ENGINE
SUBJECT
PAR.
GENERAL
.F2-1
HEATED
AIR
SYSTEM.
. F2-2
Testing
Thermo
Air
Cleaner
F2-4
Positive
Crankcase
Ventilation
Valve.
. . .F2-6
Vacuum
Motor Replacement . .F2-8
Air
Cleaner Sensor Replacement F2-9
Replacement Procedures F2-7
AIR
PUMP
.F2-10
AIR
FILTER.
F2-11
AIR
DELIVERY
MANIFOLD.
F2-12
AIR INJECTION TUBES.
F2-13
ANTI-BACKFIRE
VALVE..
.F2-14
ENGINE COMPONENTS
.F2-15
MAINTENANCE
.F2-3
Carburetor
F2-16, F2-17
Distributor
F2-18
Anti-Backfire
Valve . . F2-19
Check
Valve..
F2-20
F2-1.
GENERAL
—V-6
Engine
The
Dauntless V-6
engine
Exhaust
Emission
Con
trol
System consists of a belt-driven air pump
which
directs compressed air through connecting
hoses
to a steel distribution manifold into stainless steel injection
tubes
in the exhaust port adjacent
to each exhaust valve.
This
air, with its normal
oxygen
content, reacts with the hot but incom
pletely burned exhaust
gases
and permits further combustion in the exhaust port or manifold.
The
Exhaust
Emission System on V6-225
engines
limits
the hydrocarbon and carbonmonoxide emissions from the exhaust system. The system includes
an
engine
designed for low emissions and lean
carburetor
calibration at idle and part throttle.
The
lean carburetion is possible because of the
heated air system that is part of the Emission
System.
See Fig. F2-2.
With
the heated air system
operating, inlet air temperature is around
115°F.
[46°C],
after the first few minutes of operation.
This
makes the use of lean (hot weather)
cali
bration
possible, and the vehicle
still
responds and
drives
well in cold weather.
The
engine
has a "ported"
spark
advance, with the
vacuum
take-off just above the throttle valve, so that there is no vacuum advance at closed throttle,
but there is vacuum advance as
soon
as the throttle is opened slightly. To reduce emissions at idle and
at lower
engine
speeds, the
engine
timing is such
that the distributor
will
not have centrifugal ad
vance until about 900 RPM.
F2-2.
HEATED
AIR
SYSTEM
The
heated air system on late model V6 engines,
consists of a manifold heat collector, a heated-air
SUBJECT
PAR.
Air
Pump F2-21
Intake
Manifold F2-22
Carburetor
Air Cleaner F2-5, F2-23
REMOVAL PROCEDURES
F2-24
Air
Pump. F2-25
Anti-Backfire
Valve..
. . .F2-26
Air
Distribution Manifold,
And
Air Injection Tubes F2-27
REQUIRED
EQUIPMENT..
. F2-28
REPLACEMENT
PARTS..
.F2-29
WARRANTY
F2-30
DIAGNOSIS GUIDE
F2-31
MAINTENANCE CHART.
F2-32
GENERAL
SPECIFICATIONS
F2-33
CARBURETOR SPECIFICATIONS.
.... .F2-34
DISTRIBUTOR SPECIFICATIONS
. .F2-35
SPARK PLUG GAP
F2-36
pipe, a adapter elbow and an air cleaner containing temperature control doors operated by vacuum
through a temperature sensor. The heat
stove
is a
sheet
metal cover, shaped to and bolted on with
the right exhaust manifold. Air drawn in along the lower
edge
of the
stove
passes across the mani
fold surface, picking-up heat. The heated air is
drawn
out from the front of the manifold, through
the heated air pipe and adapter elbow into the
snorkel
of the air cleaner.
The
temperature control air cleaner is designed to mix this heated air with cold air from under the
hood so that carburetor inlet air temperature aver
ages
about
115°F.
[46°C.].
This
mixing is
done
by two air doors, a cold air door and a hot air door,
which
move
together
so that when the cold air door is closed, the hot air door is open and vice
versa.
Most of the time, both doors
will
be partially
open as required to control the temperature. When
the underhood temperature reaches about 135
°F
[57°C]
the cold air door
will
open wide and the
hot air door
will
close
tight See Fig. F2-3. Ob viously, if underhood temperatures rise above
135°F.
[57°C]
the air cleaner
will
no longer be
able to control temperatures and the inlet air tem
perature
will
rise with underhood temperature.
The
temperature doors are moved by a diaphragm
type vacuum door. When there is no vacuum pres ent in the motor, the diaphragm spring forces the
cold air door open and the hot air door closed.
Whenever
the
engine
is running, the amount of
vacuum
present in the vacuum motor depends on
the temperature sensor in the air cleaner which is located in the vacuum line
between
the intake
manifold and the vacuum motor. In the sensor, a 149
Page 150 of 376
EXHAUST
EMISSION
CONTROL
SYSTEMS
bi-metal temperature sensing spring starts to open
a
valve to bleed more air into the vacuum line
whenever the temperature in the air cleaner rises
above about
115°F.
[46°C.].
Whenever the tem
perature
falls below about
115°F.
[46°C]
the sensing spring starts to
close
the air bleed into the
vacuum
line, allowing more manifold vacuum to
reach
the vacuum motor. Whenever there is 9 inches [22,8 cm.] or more of vacuum in the vacuum
motor, the diaphragm spring is compressed, the cold air door is closed and the hot air door is
opened.
When
the
engine
is not running, the diaphragm
spring
will
always hold the cold air door open and
the hot air door closed. However, when the
engine
is running, the position of the doors depends on the
air
temperature in the air cleaner.
When
starting a cold
engine
(air cleaner tempera
ture under 95° F. [35°
C.]),
the cold air door
will
close
and the hot air door
will
open immediately. See Fig. F2-4.
This
is because the air bleed valve
in
the sensor is closed so that
full
manifold vacuum
is applied in the vacuum motor. The cold air door
will
remain tightly closed only a few minutes, how
ever. As
soon
as the air cleaner starts receiving
hot air from the heat
stove,
the sensor
will
cause the cold air door to open partially, mixing cold air
with
the hot air as necessary to regulate air cleaner temperature within 20° of the ideal
115°F.
[46°C]
air
inlet temperature. See Fig. F2-5.
If
underhood air temperature rises to 135° F.
[57°
C] the air to the vacuum bleed valve in the
sensor
will
be wide open so that vacuum motor approaches zero. The diaphragm spring in the vac
uum
motor
will
hold the cold air door wide open
and
close
the hot air door tightly. If underhood
temperature rises above 135° F. [57° C]
car
buretor inlet air temperature
will
also rise above
135°
F. [57° C.].
While
air cleaner temperature is being regulated, 150
Page 217 of 376
'Jeep'
UNIVERSAL
SERIES
SERVICE
MANUAL
H
cuit
lights,
the
signal switch
is
inoperative
and
must
be
replaced.
H-139.
Hazard
Warning Lights
All
current production vehicles
are
equipped with
a
four-way flasher warning system.
The
control switch
is
located
on the
instrument panel left
of
the steering column.
With
the
switch pulled
out,
the
two
front and
two
rear
turn
signal lights flash
on and
off
simultaneously,
as do
both
turn
signal
indicator
lights
on the
instrument clusters.
H-140.
Marker
Lights and Reflector Assembly
The
marker
lights
and
reflector assemblies
on
current
production vehicles
are
mounted
on the
side
of
the front fender and
on the
side
of
the
rear
quarter
panel.
The
spare wheel also mounts
a
marker
light. Some earlier production vehicles have
reflex reflectors mounted on the side of the hood and
on
the
side
of
the
rear
quarter panel. determine
if
dash wiper switch or wiring
is at
fault,
disconnect wiring harness from wiper motor
and
try
operating wiper independently
of
dash switch.
If
still
inoperative
see
procedure under
Par.
H-145.
b. Wiper
will
not
shut
off
— Determine
if
wiper
has both
low
and high speeds, slow speed only,
or
high speed only.
It is
important that
the
wiper
operates
at low
speed during parking cycle.
Dis
connect wiring harness from wiper motor
and try
operating wiper independently
of
dash switch.
If
wiper
shuts
off
correctly with
crank
arm
in
park
position and wiper has both speeds, check
the
lead
between
terminal
and
dash switch ground
and
check
for
defective dash switch.
If
wiper shuts
off
correctly,
but has
high speed only, check lead
be
tween wiper terminal and dash switch
for an
open
circuit
and check
for
defective dash switch.
If
still
inoperative,
see
Par. H-145.
c. Wiper
has
only fast speed.
Check
for
defective dash switch
or
open lead
between
terminal
and
dash switch.
H-141.
Windshield Wiper System
Early
production vehicles equipped with
the
Dauntless V-6
engine
have
two
single speed wind
shield wiper motors mounted above
the
windshield inside
the
vehicle. The wiper motors
are
operated
and
controlled
by a
switch located
on the
instru
ment panel.
Current
production vehicles with stationary wind
shield have
a
two-speed
electric windshield wiper motor mounted below
the
windshield outside
the
vehicle on the driver's side. The wiper motor switch is located
on the
instrument panel
to the
left
of
the steering column.
H-142.
Two-Speed Wiper Motor
The
two-speed
electric wiper motor
is
operated and
controlled
by a
turn
type, three poled, dash switch,
containing
a 6
amp. circuit breaker.
Current
flow
is directed from
the
battery through
the
ignition
switch
to the
wiper dash switch assembly
to the
two-speed
wiper motor, which passes current from the designated motor brush (high,
low or
park)
to
the armature circuit
to
ground.
H-143.
Troubleshooting Procedure
Troubleshooting procedures
are
divided into
two
categories: wiper troubleshooting
in
vehicle; wiper
troubleshooting
on
bench.
Fig. H-65 and H-66
illustrates connecting leads
of the
two-speed
wiper for either bench operation
or to run
wiper inde
pendently
of
dash switch and vehicle wiring when
installed
in the
vehicle.
H-144. Wiper Troubleshooting
in
Vehicle
Typical
wiper troubles and remedies are
as
follows
:
a.
Wiper
is
inoperative
—
Check
wiper switch
cir
cuit
breaker; wiring harness connection
at
wiper
motor
and
wiper switch; wiper motor
feed
wire
from
ignition starter switch
to
wiper switch;
and
check wiper
on
switch
to be
securely mounted.
With
ignition switch
on,
check
for 12
volts
at
har
ness
terminal that connects
to
wiper terminal.
To
BLACK
PARK
GREEN *-
RED m~
LOW
PARKING
<^^>
SWITCH
V^-O*'
HIGH
FIG.
H-64—WIRING
DIAGRAM
FIG.
H-65—WINDSHIELD
WIPER
SWITCH
ASSEMBLY
(EARLY)
1.
Park
(black)
2. Low (green)
3.
High (red)
d.
Wiper
has
only slow speed
and
shuts
off
with
dash switch in high speed position. Reverse harness
leads that connect
to
wiper terminals.
e. If
blades
do not
return
to
park
position when
wiper
is
turned
off,
check wiper ground connection
to vehicle body. Remove wiper from vehicle
and
check
for
dirty, bent,
or
broken
park
switch con
tacts.
f.
If
wiper speed
is
normal
in
slow,
but too ex
cessive
in
fast speed, check for an open terminal. 217