Rear

1. Remove caliper assembly as described under Caliper Replacement.

Fig 1 AD30P & AD35P Dual Pin Floating Brake Assembly:

2. Remove lockpin sleeve, lockpin boot, guide pin boot, boot ring and piston boot.
3. Remove piston assembly using piston driver tool No. MB990652, or equivalent to twist piston out of caliper body.
4. Remove piston seal using finger tips.

CAUTION: Do not use flat blade screwdriver or other tool to prevent damage to inner cylinder.

Fig 3 Compressing Spring Case:

5. Compress spring case into caliper body using a 3/4 inch steel pipe as shown,then remove snap ring using suitable snap ring pliers.
6. Remove spring case, return spring, stopper plate and stopper.
7. Remove auto-adjuster spindle, connecting link, O-ring, spindle lever and lever boot.
8. Remove parking brake lever, return spring and bleeder screw.
9. Inspect the following:
a. Connecting link and spindle for wear or damage.
b. Caliper body for rust or cracks.
c. Spindle lever shaft and piston for rust.
d. Bearing for wear, piston seal and boot for wear, cracks or deterioration.

10. Reverse procedure to assemble, noting the following:
a. Apply grease supplied in brake seal kit to lever boot, spindle lever, O-ring, connecting link and auto-adjuster spindle.
b. Compress spring case into caliper body using a 3/4 inch steel pipe as shown, then install snap ring using suitable snap ring pliers.

NOTE: Install snap ring to caliper body with opening facing bleeder.

c. Apply grease supplied in brake seal kit to cylinder walls, piston seal and piston, then install piston seal into cylinder.

Fig 2 Aligning Caliper Piston Stopper Grooves:

d. Using piston driver tool No. MB990652 or equivalent, press piston into caliper body with stopper grooves aligned.
e. Apply grease supplied in brake seal kit to piston boot mounting grooves in caliper body and piston, then install piston boot.
f. Apply grease supplied in brake seal kit to guide pin boot inner surface, lockpin boot inner surface and lockpin sleeve.
g. Adjust parking brake cable.