1800 SRM 1037
Parking Brake Caliper Repair
CAUTION
Use a wooden tool and vise with soft jaws in
the following steps to prevent damage to the
caliper piston or housing.
9.
Remove and discard the O-rings and backup
rings from the piston and housing.
NOTE:
The piston has right-hand threads.
10. If necessary, hold the piston in a vise and remove
the stud from the piston.
CLEAN
WARNING
To prevent serious eye injury, always wear safe
eye protection when performing vehicle main-
tenance or service.
WARNING
To avoid personal injury when cleaning parts,
work in a well-ventilated area, wear protective
clothing (face shield or safety glasses and pro-
tective gloves), and follow chemical manufac-
turer’s recommendations for safe usage.
Solvent cleaners can be flammable, poisonous,
and cause burns. Examples of solvent clean-
ers are carbon tetrachloride, emulsion-type
cleaners, and petroleum-based cleaners.
To
avoid serious personal injury when using sol-
vent cleaners, carefully follow manufacturer’s
instructions and these procedures:
• Wear safe eye protection.
• Wear clothing that protects skin.
• Work in a well-ventilated area.
• Do not use gasoline or solvents that contain
gasoline. Gasoline can explode.
• Use hot solution tanks or alkaline solutions
correctly.
Carefully follow manufacturer’s
instructions.
CAUTION
Use only solvent cleaners to clean ground or
polished metal parts. Hot solution tanks or wa-
ter and alkaline solutions will damage these
parts. Isopropyl alcohol can be used for this
purpose.
1.
Use solvent cleaners to clean all metal parts that
have a ground or polished surface. Metal sur-
faces that have a rough surface can be cleaned
with solvent cleaners or alkaline solutions.
2.
Clean all threads and fittings with a wire brush.
3.
Clean all parts not made of metal with soap and
water.
4.
Scrape off all mud and dirt from the brake lin-
ings. Discard all linings contaminated with oil
or grease.
5.
Dry all parts with clean paper or rags.
6.
Apply hydraulic fluid used in the system to the
clean parts that are to be assembled. Do not ap-
ply fluid to the linings or disc.
INSPECT
Linings
CAUTION
Always replace both linings. If only one lining
is replaced, possible disc damage can occur.
1.
Replace linings when the thickness of the lining
is less than 3 mm (0.125 in.) from the piston or
housing.
2.
Replace the lining if the thickness of the two lin-
ings is different.
3.
Replace the linings if contaminated with oil or
grease.
4.
Replace linings that have larger or deeper cracks
than the normal, small, tight cracks on the sur-
face caused by the caliper when used under high
temperature conditions.
Disc
If the disc is worn beyond the wear limits, replace the
disc. See Figure 4 and Table 1.
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