Disc Brake Caliper - Jeep 1997 Grand Cherokee Service Manual

5 - 28 BRAKES
DISASSEMBLY AND ASSEMBLY (Continued)
INSTALLATION
CAUTION: Do not use any type of tool to install
the grommets. Tools may cut, or tear the grommets
creating a leak problem after installation. Install the
grommets using finger pressure only.
(1) Lubricate new grommets with clean brake fluid
and Install new grommets in cylinder body (Fig. 64).
Use finger pressure to install and seat grommets.
Fig. 64 Grommet Installation
(2) Start reservoir in grommets. Then rock reser-
voir back and forth while pressing downward to seat
it in grommets.
(3) Install pins that retain reservoir to cylinder
body.
(4) Fill and bleed master cylinder on bench before
installation in vehicle.

DISC BRAKE CALIPER

DISASSEMBLY
(1) Remove brake shoes from caliper.
(2) Drain brake fluid out of caliper.
(3) Pad interior of caliper with minimum, 2.54 cm
(1 in.) thickness of shop towels or rags (Fig. 65). Tow-
els are needed to protect caliper piston during
removal.
PLACE USING FINGER PRES- WORK NEW GROMMETS INTO SURE ONLY CALIPER SHOP TOWELS PISTON OR CLOTHS
Fig. 65 Padding Caliper Interior
(4) Remove caliper piston with short bursts of
low pressure compressed air. Direct air through fluid
inlet port and ease piston out of bore (Fig. 66).
CAUTION: Do not blow the piston out of the bore
with sustained air pressure. This could result in a
cracked piston. Use only enough air pressure to
ease the piston out. NEVER attempt to catch the
piston as it leaves the bore. This will result in per-
sonal injury.
Fig. 66 Caliper Piston Removal
AIR GUN CALIPER PADDING MATERIAL
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