Assembly

Fig. 12 Piston Seal Installation:

1. Clamp caliper in vise (with protector jaws).

CAUTION: Excessive vise pressure will cause bore distortion and binding of piston.

2. Dip new piston seal in clean brake fluid and install in groove in bore. Seal should be positioned at one area in groove and gently worked around the groove, using fingers, until properly seated. Make sure that fingers are clean. Never use an old piston seal. (Be sure seal is not twisted or rolled).
3. Coat new piston boot with clean brake fluid leaving a generous amount inside of boot.
4. Position dust boot over piston.

Fig 16 Installing Piston Through Boot:

5. Install piston into bore pushing it past the piston seal until the piston bottoms in the bore.

Fig. 13 Dust Boot Installation:

6. Position the dust boot in the counterbore. Using a hammer and Tool C-4690 with handle C-4171, or equivalent, drive the boot onto the counterbore.

CAUTION: Force must be applied uniformly to avoid cocking.

7. Install brake hose to caliper using new seal washers.

NOTE: Before installing caliper assembly on vehicle, inspect braking disc runout and thickness.