1993 DODGE TRUCK suspension

GROUP TAB LOCATOR

Introduction

0
Lubrication
and
Maintenance
2
Front Suspension
and
Axle

3
Rear Suspension
and
Axles

5
Brakes

6
Clutch
7
Cooling System

8
Electrical

9
Engines
11
Exhaust System
and
Intake
Manifold

13
Frame
and Bumpers

14
Fuel
System

16
Propeller Shafts

19
Steering

21
Transmission
and
Transfer Case

22
Wheels and Tires

23
Body Components

24
Heating
and Air
Conditioning

25
Emission Control Systems Component and System Index
Service Manual Comment Forms (Rear
of
Manual)

0 - 2
LUBRICATION
AND
MAINTENANCE

• Commercial service
When a vehicle is continuously subjected to severe
driving conditions, lubricate:
• Body components
• All the driveline coupling joints
• Steering linkage More often than normal driving conditions

DUSTY
AREAS
With this type of severe driving condition, special
care should be given to the:
• Engine air cleaner filter
• PCV filter
• Crankcase ventilation system
• Brake booster control valve air filter. Verify that the filters and the associated compo­
nents are clean. Also verify that they are functioning
effectively. This will minimize the amount of abra­ sive particles that enter the engine.

OFF-ROAD
(4WD)
OPERATION
After off-road (4WD) operation, inspect the under­
side of the vehicle. Inspect the:
• Tires
• Body structure
• Steering components
• Suspension components • Exhaust system
• Threaded fasteners

HARSH
SURFACE ENVIRONMENTS
After extended operation in harsh environments,
the brake drums, brake linings, and rear wheel bear­ ings should be inspected and cleaned. This will pre­
vent wear and erratic brake action.

ROUTINE MAINTENANCE
The following routine maintenance is recommended
on a monthly basis: TIRES—Inspect the tires for unusual wear/damage.
Determine if the inflation pressure is adequate for
the vehicle load. BATTERY—Inspect and clean the terminals.
Tighten the terminals if necessary. FLUIDS—Determine if the component fluid levels
are acceptable. Add fluid, if necessary. LIGHTS/ELECTRICAL—Test all the electrical sys­
tems in the vehicle for proper operation. It is also recommended that the engine oil and the
washer fluid level be determined at each fuel fill-up.

VEHICLE
NOISE CONTROL
Vehicles with a GVWR of 4 535 kg (10,000 lbs), or
more, are required to comply with Federal Exterior Noise Regulations (Fig. 2).
VEHICLE
NOISE
EMISSION
CONTROL INFORMATION

DATE
OF
VEHICLE
MANUFACTURE

THIS
VEHICLE CONFORMS
TO
U.S. EPA REGULATIONS FOR NOISE EMISSION

APPLICABLE
TO
MEDIUM
AND HEAVY
DUTY
TRUCKS. THE
FOLLOWING
ACTS OR THE CAUSING THEREOF BY ANY PERSON ARE PROHIBITED BY THE NOISE CONTROL ACT
OF 1972. (A) THE
REMOVAL
OR

RENDERING
INOPERATIVE, OTHER
THAN
FOR
PURPOSES
OF
MAINTENANCE,
REPAIR.
OR REPLACEMENT, OF ANY NOISE CONTROL DEVICE OR ELEMENT OF
DESIGN
(LISTED
IN
THE
OWNERS
MANUAL)
INCORPORATED
INTO
THIS
VEHICLE
IN COMPLIANCE
WITH
THE NOISE CONTROL
ACT:
(B) THE
USE
OF
THIS
VEHICLE
AFTER SUCH DEVICE
OR
ELEMENT
OF
DESIGN HAS BEEN REMOVED
OR
RENDERED
INOPERATIVE.

PU626D

Fig.
2 Vehicle
Noise
Emission
Control Information
Label

UNAUTHORIZED
DEFEAT
OF
NOISE
CONTROL COMPONENTS
Federal law prohibits removal, altering or other­
wise defeating any noise control component. This in­
cludes before or after the vehicle is in use. Federal
law also prohibits the use of a vehicle after a noise
control component is defeated.

REQUIRED MAINTENANCE/SERVICE
FOR
NOISE
CONTROL

The following maintenance is required after each
6-month or 9 600 km (6,000 miles) interval. This will
ensure that the vehicle noise control components are
operating properly.

EXHAUST SYSTEM
Inspect exhaust system for exhaust leaks and dam­
aged components. The exhaust hangers, clamps and
U-bolts should be attached and in good condition.
Burned or ruptured mufflers, damaged exhaust pipes should be replaced. Refer to Group 11—Exhaust Sys­
tem/Intake Manifold for service information.

AIR
FILTER
HOUSING/CANISTER
Inspect the air filter assembly for proper fit. Verify
the cover is securely attached to the housing/canis­
ter. Inspect all the air filter housing hoses for con­ nections. The gasket between the air filter housing and throttle body must be in good condition. The air
filter element should be clean and serviced according
to the maintenance schedule.

FUEL
REQUIREMENTS
GASOLINE
ENGINES
All engines require the use of unleaded gasoline to
reduce the effects of lead to the environment. Also unleaded fuel is necessary to prevent damage to the
catalytic converter/02 sensor. The fuel must have a
minimum octane rating of 87 based on the (R + M)/2
calculation method.

0 - 4
LUBRICATION
AND
MAINTENANCE

COMPONENTS
REQUIRING
NO
LUBRICATION

There are many components that should not be lu­
bricated. The components that should not be lubri­ cated are: • Air pumps
• Generator bearings
• Brake booster cylinder • Clutch release bearings
• Distributors
• Drive belts • Drive belt idler pulleys • Drive shaft center bearings
• Idler arms • Rubber bushings
• Starter motor bearings • Suspension strut bearings
• Rear spring shackle bolts • Rear wheel bearings (not equipped with a Dana
or 70 axle)
• Throttle control cables
• Throttle linkage ball joints • Water pump bearings

CHASSIS LUBRICATION

For light
duty
cycle
vehicles
GVW resting
of
3 855 Kg (8,500 lbs ) and
below.
Component
Truck Models
Fittings
Service Interval Lubricant

Center Link
AD1
AD2

AD
4
2

36
000
km
(22,500
miles)
or 2
years Multi-purpose grease
-
NGLI
grade
2
EP
(Multi-Mileage Lubricant)

Drag
Link
Bali
joints
AW1 AW 2
AW
8
2

12
000
km
(7,500
miles)
or 6
months Multi-purpose grease
-
NGLI
grade
2
EP
(Multi-Mileage Lubricant)

Gearshift
Mechanism
Overdrive
4
AD1
1
36
000
km
(22,500
miles)
or 2
years Multi-purpose grease
-
NGLI
grade
2
EP
(Multi-Purpose Lubricant)
Parking Brake Ratio
Lever
Pivot
AD1 AD
2 AD 4

AW1 AW 8
—

36
000
km
(22,500
miles)
or 2
years
Multi-purpose grease
-
NGLI
grade
2
EP
(Multi-Purpose Lubricant)
Propeller Shaft
U-joint
AW1
AW2

AW 8
3
(1
Piece

rear

P/shaft)
12
000
km
(7,500
miles)
or 6
months
Multi-purpose grease
-
NGLI
grade
2
EP
(Multi-Purpose Lubricant)
Propeller Shaft
Slip
Spline
AD1 AD
2

(2
piece P/shaft)
1

36
000
km
(22,500
miles)
or 2
years. For severe
service,
every
4
800
km
(3,000
miles)
or 3
months. Daily,
if
vehicle is operated in
water
Multi-purpose grease
-
NGLI
grade
2
EP
(Multi-Purpose Lubricant)

Suspension
Ball Joints
AD1 AD
2

4
36
000
km
(22,500
miles) or 2 years
—
every
engine
oil change
for
off-highway operation Multi-purpose grease
-
NGLI
grade
2
EP
(Multi-Mileage Lubricant)
Tie Rod Ball Joints
AD1
AD2

AD4
AW1 AW
2

AW8 4
2

36
000
km
(22,500
miles)
or 2
years

12
000
km
(7,500
miles)
or 6
months. Daily,
if

vehicle is operated in
water
Multi-purpose grease
-
NGLI
grade
2
EP
(Multi-Mileage Lubricant)
NP-241 Transfer
Case
Shift
Lever Pivot
AW1
AW2

AW8
—

As
Required
Multi-purpose grease
-
NGLI
grade
2
EP
(Multi-Purpose Lubricant)

Wheel
Stop
AD1 AD
2
AD4
—
36
000
km
(22,500
miles)
or
as
required
Wax Type Lubricant

Constant
Velocity Joint
(Front
P/shaft)
AW1
AW2

AW8 1

12
000
km
(7,500
miles) Multi-purpose grease
-
NGLI
grade
2
EP
(Multi-Purpose Lubricant)
>

J9000-59

>

CHASSIS LUBRICATION
(CONT'D)

For
heavy
duty
cycle
vehicles
GVW
rating
of 3 856 Kg
(8,501
Sbs.) and
above.
Component
Truck
Models
Fittings
Service
Interval
Lubricant

Center Link
AD2-3
2

39 000 km (24,000 miles) or 2 years Multi-purpose grease -
NGLI
grade 2 EP
(Multi-Mileage Lubricant)

Drag
Link Ball Joints
AW3
2
9
600 km (6,000 miles) or 6 months
Multi-purpose grease -
NGLI
grade 2 EP
(Multi-Mileage Lubricant)

Constant
Velocity Joint
(Front
P/shaft)
AW3

1

9
600 km (6,000 miles) Multi-purpose grease -
NGLI
grade 2 EP
(Multi-Purpose Lubricant)

P/shaft
U-Joints
AW3

3
9
600 km (6,000 miles) or 6 months. For severe
service,
every
1
600 km (1,000 miles). Daily, if
vehicle is
operated
in
water.
Multi-purpose grease -
NGLI
grade 2 EP
(Multi-Purpose Lubricant)

P/shaft
Slip
Spline
AW3
(135" WB)
1
39
000 km (24,000 miles) or 2 years. For severe
service
every
4 800 km (3,000 miles) or 3 months.
Daily, if vehicle is
operated
in
water.
Multi-purpose
grease -
NGLI
grade 2 EP
(Multi-Purpose Lubricant)

Suspension
Ball Joints
AD2-3
4

39
000 km (24,000 miles) Multi-purpose grease -
NGLI
grade 2 EP
(Multi-Mileage Lubricant)
Tie Rod
Ball
Joints
AD2-3

AW2-3
4

2
39
000 km (24,000
miles)
or 2 years

9
600 km (6,000 miles) or 6 months Multi-purpose grease -
NGLI
grade 2 EP
(Multi-Mileage Lubricant)

NP-205
Transfer
Case

Shift
Linkage
AW2-3

—
As
required

Light
Engine Oil

NP-241
Transfer
Case
Shift

Lever
Pivot
AW2

—
As
required

Multi-purpose grease -
NGLI
grade 2 EP
(Multi-Purpose Lubricant)

J9000-60

LUBRICATION
AND
MAINTENANCE
0-11

J
DRIVE-ON
HOIST

I
FRAME
CONTACT
HOIST
TWIN
POST
CHASSIS
HOIST

FLOOR
JACK
RROOD30
Fig.
8 Correct Vehicle Lifting
Locations
An axle tube
A body side sill
A steering linkage component
A drive shaft
The engine or transmission oil pan
The fuel tank
• A front suspension arm Use the correct frame rail lifting locations only
(Fig. 8).
HOIST A vehicle can be lifted with:
• A single-post, frame-contact hoist
• A twin-post, chassis hoist
• A ramp-type, drive-on hoist
When a frame-contact type hoist is used, verify
that the lifting pads are positioned properly (Fig. 8).

WARNING:
WHEN
A
SERVICE
PROCEDURE
RE­
QUIRES
THE
REMOVAL
OF
THE
REAR
AXLE,
FUEL

TANK,
OR
SPARE
TIRE,
EITHER:

• PLACE ADDITIONAL WEIGHT ON THE REAR
END OF THE VEHICLE
« ATTACH THE VEHICLE TO THE HOIST
« PLACE JACK STANDS UNDER THE VEHICLE
FOR SUPPORT TO PREVENT TIPPING WHEN
THE CENTER OF BALANCE CHANGES
4WD VEHICLES A standard hoist can be used to lift a 4WD vehicle.
The hoist should be inspected for adequate clearance. The lift arms, pads or ramps should be adjusted to
ensure that there is adequate clearance (Fig. 9).
ADJUSTMENT
PAD

ii 7
MAINTAIN
CLEARANCE
HOIST
ARM

RK44

Fig.
9 Lifting 4WD Vehicle
With
Single-Post
Hoist—
Typical
When a twin-post hoist is used, a 4 x 4 x 12-inch
wood spacer also could be required. Place the wood spacer under the front axle (opposite the differential
housing). This will maintain balance and level lift­ ing.

CAUTION:
The
block
that
is
used must
be
secured in
a
safe manner. This
will
ensure
that
it
will
not un­

balance
the
vehicle.
VEHICLE
TOWING
RECOMMENDATIONS
When it is necessary to tow a Ram Truck, the rec­
ommended method is either:
• the sling-type, rear-end raised towing method; or
• the wheel-lift towing method with a tow dolly lo­
cated under the front wheels. A vehicle with flat-bed hauling equipment can also
be used to transport a disabled vehicle.

SLING-TYPE
FLAT
BED
RR0OD29
Fig.
10 Tow Vehicles
With
Approved
Equipment

0 - 12
LUBRICATION
AND
MAINTENANCE

• A vehicle equipped with SAE approved sling-type
towing equipment can be used (Fig. 10). However,
many vehicles are equipped with air dams, spoilers, and/or ground effect panels. In this case a wheel-lift
towing vehicle or a flat-bed hauling vehicle is recom­ mended (Fig. 10). If a flat bed device is used, the ap­
proach angle should not exceed 15 degrees.
GROUND CLEARANCE The lifted wheels of the disabled vehicle should be
a minimum of 10 cm (4 in.) off the ground. Make
sure there is enough clearance at the opposite end.
This is critical when towing over rough terrain. If necessary, the rear ground clearance can be in­creased by removing the wheels from the lifted end
and then towing with the lifted end closer to the
ground. If the rear wheels are removed, secure the
brake drums. A 20 cm (8 in.) ground clearance must
be maintained between brake drums or rotors and the ground.
SAFETY PRECAUTIONS The following safety precautions must be consid­
ered when preparing for and during a vehicle towing operation:
• Remove exhaust pipe tips that interfere with the
tow sling and crossbar • Padding should be placed between the tow sling/
crossbar and any painted surfaces
• If the vehicle is damaged, secure the loose and pro­
truding parts
• Always use a safety chain system that is indepen­ dent of the lifting and towing equipment
• When placing tow hooks on the rear axle, position them so they do not damage the brake tubing or
hoses
• Do not allow any of the towing equipment to con­
tact the fuel tank
• Do not tow the vehicle by connecting to the front
or rear shock absorbers
• The operator should not go under a vehicle while
it is lifted by the towing equipment. The vehicle
should first be supported by safety stands
• Do not allow passengers in a vehicle being towed
• Observe all state and local laws involving warning signals, night illumination, speed, etc.
• Do not exceed a towing speed of 48 km/h (30 mph)
• Avoid towing distances of more than 24 km (15
miles) whenever possible • Do not attach tow chains or a tow sling to a
bumper, the steering linkage, the universal joints, or a drive shaft
REAR-END RAISED TOWING It is recommended that the rear-end raised towing
method be used. Vehicles can be towed with the front
wheels on the ground for extended distances at speeds not exceeding 48 km/h (30 mph) (Fig. 11). (1) Attach the J-hooks around the axle shaft tubes
outboard of the rear springs. (2) Position and center the sling under and for­
ward of the rear bumper. (3) Attach safety chains (with pads) at each end of
the rear bumper.
(4) Turn the ignition switch to the OFF position to
unlock the steering wheel. (5) Clamp the steering wheel with the front wheels
in the straight ahead position.

CAUTION:
Do not use the steering
column
lock
to

secure
front
wheel
in the straight-ahead
position.

(6) Shift the transmission to NEUTRAL.

POSITION CENTER BAR FORWARD
OF
BUMPER
-
/
J-HOOKS OUTBOARD
OF
SPRINGS
RN967A

Fig. 11 Rear-End
Raised
Towing
FRONT'END RAISED TOWING If a vehicle cannot be towed from the rear, the
front-end raised towing method normally can be
used (Fig. 12). (1) Center the sling with the bumper and position
it at the frame front crossmember.

CAUTION:
Use tow
chains
with
J-hooks
for
con­
necting
to the
disabled
vehicle's
lower
suspension
arms.
Never use
T-hooks.

(2) Route the J-hooks and tow chains over the
steering linkage outboard of the coil spring.
(3) Attach the J-hooks to the outer end of the
lower suspension arms.
(4) Raise the vehicle.
(5.) Attach the safety chains to the disabled vehicle
at the frame rails.
Vehicles equipped with a MANUAL TRANSMIS­
SION can be towed with the rear wheels on the

0
- 28
LUBRICATION
AND
MAINTENANCE

•
CHASSIS AND BODY

page

Body
Component Mechanisms
32
Front
Suspension
Ball
Joints
28

Front
Wheel Bearings
29

Headlamps
32

Lower
and
Upper Suspension
Arm
Bushings
.... 30

Manual
Steering Gear
28

STEERING
LINKAGE

INSPECTION When
a
vehicle
is
raised
for
maintenance under
the vehicle,
all
steering components should
be
checked.
LUBRICATION SCHEDULE The steering linkage
is
lubricated with
a
chassis
lubricant. However,
it is
recommended that
the
link­
age
be
inspected
and
lubricated after each:
•
24 000 km
(15,000 miles) interval
or
every
6

months,
for 2WD
vehicles subject
to the
LIGHT
DUTY CYCLE Maintenance Schedule
•
9 600 km
(6,000 miles) interval
or
every
6
months,
for
2WD
vehicles subject
to the
HEAVY DUTY
CY­
CLE Maintenance Schedule
•
12 000 km
(7,500 miles) interval
or
every
6

months,
for 4WD
vehicles subject
to the
LIGHT DUTY CYCLE Maintenance Schedule
•
9 600 km
(6,000 miles) interval
or
every
6
months,
for
4WD
vehicles subject
to the
HEAVY DUTY
CY­
CLE Maintenance Schedule.
LUBRICATION (1) Inspect
the
steering linkage
for
looseness
and

excessive wear. (2) Replace,
all
ruptured seals
and
damaged steer­
ing linkage components. Damaged seals should
be re­

placed
to
prevent leakage
and
contamination
of the
lubricant.

CAUTION:
Use
care
to
prevent lubricant from
con­

tacting
the
brake rotors.

(3) Lubricate
the
steering linkage:
• Clean
the
Zerk type lubrication fittings
on the tie-

rod
and
center link ball-stud ends
• Lubricate
the
ball studs with MOPAR®Multi-Mile- age Lubricant
• Wipe
the
excess lubricant from
the
exterior sur­
faces
of the
ball joints
page

Power
Brake System
30
Power
Steering System
. . 29

Rear
Wheel Bearings
30

Speedometer Cable
33

Steering Linkage
28

Tires
32

FRONT
SUSPENSION
BALL JOINTS

INSPECTION When
a
vehicle
is
raised
for
lubrication/general
maintenance,
the
ball joints should
be
inspected.
LUBRICATION SCHEDULE The front suspension ball joints
are
lubricated dur­
ing manufacture with
a
long-life chassis lubricant.
However,
it is
recommended that
the
ball joints
be

inspected
and the
studs lubricated:
•
At
each
36 000 km
(22,500 miles) interval
or
every
2 years,
for
vehicles subject
to the
LIGHT DUTY
CY­
CLE Maintenance Schedule
•
At
each
9 600 km
(6,000 miles) interval
or
every
2

years,
for
vehicles subject
to the
HEAVY DUTY
CY­
CLE Maintenance Schedule.
4WD vehicles that
are
frequently driven
off-

road should
be
lubricated
at
every engine
oil
change.
LUBRICATION (1) Inspect
the
front suspension. Examine
the
ball
studs
for
looseness
and
excessive wear. (2) Replace
all
torn ball-stud seals
and
damaged
ball joints. Damaged seals should
be
replaced
to
pre­ vent leakage
and
contamination.

CAUTION:
Use
care
to
prevent lubricant from
con­

tacting
the
brake rotors.

(3) Lubricate
the
ball studs:
• Clean
the
Zerk type lubrication fittings
on the

ball-stud ends
• Lubricate
the
ball studs with MOPAR®Multi-Mile-age Lubricant
• Wipe
the
excess lubricant from
the
exterior sur­
faces
of the
ball joints

MANUAL
STEERING
GEAR

LUBRICATION Manual steering gears
are
permanently lubricated
during manufacture. Periodic lubrication
is not
nec­
essary.