Chrysler Vehicle User Manual page 222

TJ
DISC BRAKE CALIPERS (Continued)
Fig. 13 Caliper Piston Removal
1 - AIR GUN
2 - CALIPER PISTON
3 - PADDING MATERIAL
(5) Remove caliper piston dust boot with suitable
pry tool (Fig. 14) .
Fig. 14 Caliper
1 - COLLAPSE BOOT WITH PUNCH OR SCREWDRIVER
2 - PISTON DUST BOOT
(6) Remove caliper piston seal with wood or plastic
tool (Fig. 15) . Do not use metal tools as they will
scratch piston bore.
(7) Remove caliper mounting bolt bushings and
boots (Fig. 16) .
Fig. 15 Piston Seal Removal
1 - REMOVE SEAL WITH WOOD PENCIL OR SIMILAR TOOL
2 - PISTON SEAL
Fig. 16 Mounting Bolt Bushing And Boot
1 - CALIPER SLIDE BUSHING
2 - BOOT
CLEANING
Clean the caliper components with clean brake
fluid or brake clean only. Wipe the caliper and piston
dry with lint free towels or use low pressure com-
pressed air.
CAUTION: Do not use gasoline, kerosene, paint
thinner, or similar solvents. These products may
leave a residue that could damage the piston and
seal.
INSPECTION
The piston is made from a phenolic resin (plastic
material) and should be smooth and clean.
The piston must be replaced if cracked or scored.
Do not attempt to restore a scored piston surface by
sanding or polishing.
CAUTION: If the caliper piston is replaced, install
the same type of piston in the caliper. Never inter-
change phenolic resin and steel caliper pistons.
The pistons, seals, seal grooves, caliper bore and
piston tolerances are different.
BRAKES - BASE 5 - 13