Chrysler RAM TRUCK 2500 1994 Service Manual page 55

0 - 30 LUBRICATION AND MAINTENANCE
0
(3) Replace the front brake pads and the rear
brake linings i f they are worn to within 0.78 mm
(0.031 in) of a rivet head.
(4) Operate the rear brake self-adjuster lever and
pivot. Test the operation of the self-adjuster screw for
ease of movement.
(5) Inspect the self-adjuster components for frayed
cables, loose or overheated springs, and a binding
condition.
(6) Inspect the caliper dust boots for damage/tears
and indications of brake fluid leakage. Inspect the
bushings and pins for corrosion, tears and a binding
condition.
(7) Inspect the rear wheel cylinder dust boots for
fluid leaks. Inspect the pistons and cylinder bores for
proper appearance.
(8) Inspect the brake differential warning valve
and housing for indications of leakage, kinked hoses
and loose fittings.
BRAKE HOSE INSPECTION
WARNING: IF FRONT W H E E L OR R E A R A X L E
B R A K E H O S E O U T E R C O V E R IS C R A C K E D ,
C H A F E D , OR B U L G E D , R E P L A C E H O S E IMMEDI­
ATELY. B R A K E F A I L U R E CAN RESULT.
The front wheel and rear axle brake hoses should
be inspected at time and distance intervals described
in the Lubrication and Maintenance Schedules. Refer
to the General Information section of this group. A
hose must be replaced i f i t has signs of cracking,
chafing, fatigue or bulging. For proper service proce­
dures, refer to Group 5, Brakes.
B R A K E LINE INSPECTION
The metal brake lines should be inspected when
other under vehicle service is preformed. I f a line is
pinched, kinked, or corroded, i t should be repaired.
For proper service procedures, refer to Group 5,
Brakes.
PARKING BRAKE
The pivot and sliding contact areas of the parking
brake ratio lever should be lubricated (Fig. 4).
(1) Apply Mopar Spray White Lube or equivalent
to the sliding contact areas.
(2) Lubricate the control lever pivot areas with en­
gine oil.
PARKING BRAKE FUNCTIONAL TEST AND
INSPECTION
(1) Engage the parking brake pedal and then re­
lease it.
(2) Test i t for smooth operation and vehicle-holding
capability.
(3) Inspect the parking brake cables for kinks,
fraying and a binding condition.
(4) With the parking brake released, the rear
wheels should rotate without restriction. Adjust the
parking brake cable tension, i f necessary.
(5) Repair any parking brake malfunctions.
Fig. 4 Parking Brake Ratio Lever Lubrication
TIRES'
The condition of the tires should be inspected. The
inflation pressures tested/corrected at the same time
as the engine oil is changed and the oil filter is re­
placed.
The tires/wheels should be rotated at the intervals
described i n the Maintenance Schedules section of
this Group.
INSPECTION
Inspect the tires for excessive wear, damage. Test
the tires for the recommended inflation pressure and
adjust the pressure accordingly. Refer to the tire in­
flation pressure decal located on the left door face.
Also to Group 22, Tires And Wheels for tire pressure
charts, tire replacement, and tread wear indicators.
ROTATION
Tires/wheels should be rotated according to the rec­
ommended interval. The first tire/wheel rotation is
the most important for establishing the prevention of
uneven tread wear. After rotation, adjust the tire in­
flation pressure to the air pressure recommended on
the decal located on the left door face.
Refer to Group 22, Tires And Wheels for the recom­
mended method of tire/wheel rotation.
BODY COMPONENT MECHANISMS
LUBRICATION REQUIREMENTS
A l l operating mechanisms and linkages should be
lubricated when necessary. This will maintain ease of
operation and provide protection against rust and ex­
cessive wear. The door weatherstrip seals should be
lubricated to prolong their life as well as to improve
door sealing.