10-3. DISC BRAKE ASSEMBLY REPLACEMENT/REPAIR (CONT)
Inspect pistons (7 and 8).
Inspect pistons (7 and 8) for
scratches and rust. Use emery cloth
to remove small scratches and rust.
Discard parts if there are large
scratches or amounts of rust.
Measure outer diameter of
pistons (7 and 8). Discard pistons if
the outer diameter is less than
2.995 in. (76.07 mm).
Inspect brake housing (2).
Inspect piston bores and ring grooves in brake housing (2) for scratches and rust. Use emery
cloth to remove small scratches and rust. Discard brake housing if there are large scratches or
amounts of rust.
Measure inner diameter of piston bores in brake housing (2). Discard brake housing if inner
diameter of bore is more than 3.003 in. (76.28 mm).
Use only specified parts when
assembling the disc brake caliper.
Do not mix parts from other disc
brakes calipers. If installing the
wrong parts, the disc brake will not
operate correctly and could result in
severe personal injury and
Wipe all sealing surfaces on disc
brake caliper clean and dry. Apply
film of clean hydraulic oil to all
seals, pistons, and bores as parts are
Install four back-up rings (16), preformed packings (15), and dust seals (14) in brake