Chrysler 300M Service Manual page 127

5 - 20 BRAKES - BASE BRAKE SYSTEM
BRAKE PADS/SHOES - REAR (Continued)
(8) Pull inboard brake shoe away from piston,
until the retaining clip is free from the cavity in the
piston (Fig. 23).
Fig. 23 Removing / Installing Inboard Brake Shoe
1 - RETAINING CLIP
2 - INBOARD SHOE
CLEANING - DISC BRAKE SHOES
WARNING: DUST AND DIRT ACCUMULATING ON
BRAKE PARTS DURING NORMAL USE MAY CON-
TAIN ASBESTOS FIBERS FROM PRODUCTION OR
AFTERMARKET BRAKE
EXCESSIVE CONCENTRATIONS
FIBERS CAN CAUSE SERIOUS BODILY HARM.
EXERCISE CARE
PARTS. DO NOT SAND OR GRIND BRAKE LINING
UNLESS EQUIPMENT USED IS DESIGNED TO CON-
TAIN THE DUST RESIDUE. DO NOT CLEAN BRAKE
PARTS WITH COMPRESSED AIR OR BY DRY
BRUSHING. CLEANING SHOULD BE DONE BY
DAMPENING THE BRAKE COMPONENTS WITH A
FINE MIST OF WATER, THEN WIPING THE BRAKE
COMPONENTS CLEAN WITH A DAMPENED CLOTH.
DISPOSE OF CLOTH AND ALL RESIDUE CONTAIN-
ING ASBESTOS FIBERS IN AN IMPERMEABLE
CONTAINER WITH THE APPROPRIATE LABEL. FOL-
LOW PRACTICES PRESCRIBED BY THE OCCUPA-
TIONAL SAFETY AND HEALTH ADMINISTRATION
(OSHA) AND THE ENVIRONMENTAL PROTECTION
AGENCY (EPA) FOR THE HANDLING, PROCESSING,
AND DISPOSING OF DUST OR DEBRIS THAT MAY
CONTAIN ASBESTOS FIBERS.
INSPECTION - DISC BRAKE SHOES
Visually inspect brake shoes (pads) for uneven lin-
ing wear. Also inspect for excessive lining deteriora-
tion. Check the clearance between the tips of the
LININGS. BREATHING
OF ASBESTOS
WHEN SERVICING
wear indicators on the shoes (if equipped) and the
brake rotors.
If a visual inspection does not adequately deter-
mine the condition of the lining, a physical check will
be necessary. To check the amount of lining wear,
remove the disc brake shoes from the calipers.
Measure each brake shoe. The combined brake
shoe and its lining material thickness should be mea-
sured at its thinnest point.
• For front disc brake shoes, when a set of brake
shoes are worn to a thickness of approximately 7.95
mm (5/16 inch), they should be replaced.
• For rear disc brake shoes, when a set of brake
shoes are worn to a thickness of approximately 7.0
mm (9/32 inch), they should be replaced.
• Typically, if front shoes are worn out, both fronts
and rears need to be replaced. Make sure to check
rears.
Replace both disc brake shoes (inboard and out-
board) on each caliper. It is necessary to replace the
shoes on the opposite side of the vehicle as well as
the shoes failing inspection.
If the brake shoe assemblies do not require
replacement, be sure to reinstall the brake shoes in
the original position they were removed from.
INSTALLATION - REAR DISC BRAKE SHOES
NOTE: Step 1 below is only required when installing
a caliper after new brake shoes have been installed.
(1) Completely retract caliper piston back into pis-
ton bore of caliper assembly.
BRAKE
(2) Lubricate both adapter abutments with a lib-
eral amount of Mopar
equivalent.
(3) Install the rear rotor on the hub, making sure
it is squarely seated on the face of the hub (Fig. 21).
(4) Remove the protective paper from the noise
suppression gasket on both the inner and outer brake
shoe assemblies (if equipped).
(5) Install the new inboard brake shoe assembly
into the caliper piston by firmly pressing into piston
bore with thumbs. Be sure inboard brake shoe
assembly is positioned squarely against the face of
the caliper piston (Fig. 23).
(6) Slide the new outboard brake shoe assembly
onto the caliper assembly (Fig. 22).
CAUTION: Use care when installing the caliper
assembly onto the adapter, so the caliper guide pin
bushings do not get damaged by the mounting
bosses.
(7) Carefully lower caliper and brake shoes over
rotor and onto adapter, reversing the removal proce-
dure (Fig. 19).
Multipurpose Lubricant, or
LH