Jeep J-10 Series 1982 Technical & Service Manual page 834

2G-42 BRAKES
(8) Remove and discard sleeves and rubber bush
ings from caliper mounting ears.
J41130
Fig. 2G-41 Piston Seal Removal
Cleaning and Inspection
Clean all parts in brake cleaning solvent or clean
brake fluid only. Blow out all caliper passages using
filtered compressed air only.
Replace the mounting bolts if corroded or if the
threads are damaged. Do not attempt to clean or polish
the mounting bolts with abrasives as the protective plat
ing will be removed.
Inspect the caliper piston. Replace the piston if
nicked, scratched, corroded, or if the protective plating
has worn off.
CAUTION: Do not attempt to refinish the piston in
any way. The outside diameter is the sealing surface and
is manufactured to very close tolerances. Removal of the
nickel-chrome protective plating will lead to pitting,
rusting, and eventual piston seizure.
Inspect the piston bore. Replace the caliper if the bore
is nicked, scratched, worn, cracked, or badly corroded.
However, minor stains or corrosion can be removed us
ing crocus cloth.
CAUTION: Do not use emery cloth or similar abra
sives on the piston bore. If the bore does not clean up
with crocus cloth, replace the caliper. Clean the caliper
thoroughly with brake fluid or brake cleaning solvent if
the bore was polished.
Assembly
(1) Lubricate piston bore and replacement seal with
brake fluid.
(2) Install seal in bore groove. Work seal into groove
using fingers only.
(3) Lubricate piston with brake fluid.
(4) Install replacement dust boot on piston. Slide
metal retainer portion of boot over open end of piston
and pull boot rearward until rubber boot lip seats in
piston groove (fig. 2G-42).
V.
FOLD FACES
OPEN END OF
PISTON
LIP PORTION
OF FOLD SEATS
IN GROOVE IN
PISTON
J41131
Fig. 2G-42 Installing Dust Boot on Piston
(5) Push metal retainer portion of boot forward un
til retainer is flush with rim at open end of piston and
boot fold snaps into place (fig. 2G-43).
DUST BOOT
FLUSH WITH RIM
J41132
Fig. 2G-43 Snapping Dust Boot Fold in Place
(6) Insert piston into bore and into piston seal. Do
not unseat seal.
(7) Press piston to bottom of bore using hammer
handle.
(8) Seat metal retainer portion of dust boot in
counterbore at upper end of piston bore using Tool J-
22904 (fig. 2G-44).
CAUTION: The metal portion of the dust boot must be
seated evenly and below the face of the caliper.
(9) Install bleeder screw. Tighten screw securely
but not to required torque until brakes have been bled.
Installation
(1) Install replacement copper gaskets on brake line
and connect line to caliper. Tighten brake line bolt to 160
inch-pounds (18 N*m) torque.