Jeep 1979 CJ-5 Technical & Service Manual page 642

brakes
m - m
Disassembly
(1) Drain remaining fluid from caliper and place
caliper on clean work surface.
(2) Pad caliper interior with shop cloths (fig. 2G-
51).
(3) Insert air nozzle in caliper fluid inlet port and
slowly apply just enough air pressure to ease piston out
of bore.
WARNING: Do not, under any circumstances, place
fingers in front of the piston in an attempt to catch or
protect it. In addition, use only enough air pressure to
ease the piston out of the bore. Excessive air pressure
can eject the piston with enough force to cause damage
or personal injury.
(4) Remove and discard dust boot.
(5) Remove piston seal from bore using plastic or
wood tool only. Discard piston seal.
CAUTION: Do not use metal tools to remove the pis-
ton seal. Metal tools may damage the piston bore.
(6) Remove bleeder screw protective cap and blee-
der screw.
A 4 2 8 8 4
Fig. 2G-51 Caliper Piston Removal
A 4 2 8 8 5
Fig. 2G-52 Positioning Dust Seal On Installer Tool
.Cleaning t i l Inspection
Remove rust and corrosion from the caliper and an-
chor plate abutement surfaces using a wire brush and
fine grit sandpaper and lubricate these surfaces with
molydisulphide grease (fig. 2G-47).
Clean the caliper and piston with brake cleaning sol-
vent and dry both parts using filtered compressed air.
Be sure to blow out all passages in the caliper.
Inspect the caliper piston for damage. Replace the
piston if worn, scored, pitted, or corroded.
Inspect the caliper for damage. Replace the caliper if
the bore or seal grooves are worn, nicked, pitted, or
badly corroded. Minor corrosion in the bore can be re-
moved using a fiber brush only.
Inspect the anti-rattle spring, support key, support
key spring, and support key retaining screw. Replace
any parts that are damaged or worn. Replace the sup-
port spring and anti-rattle springs if they are flattened,
distorted, or lack tension.
PRESS SEAL LIP
F I R M L Y I N T O G R O O V E
42886A
Fig. 2G-53 Dust Seal Installation
Assembly
(1) Lubricate piston bore and replacement piston
seal with brake fluid.
(2) Install piston seal in bore. Work seal into groove
using fingers only.
(3) Install bleeder screw and protective cap.
(4) Install caliper piston and replacement dust boot
using Installer Tool J-24837. Refer to Piston and Boot
Replacement with Installer Tool J-24837.
NOTE: If a boot installer tool is not available, refer to
Piston and Boot Installation without Installer Tool.
Piston and Boot Installation with Installer Tool J-24837
(1) Lubricate piston and replacement dust boot
with brake fluid.