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Disc Caliper - Rear: Reassembly

  1. Install bleeder screw and tighten. Install fitting and bolt using new copper washers. Lubricate new piston seal with brake fluid and install into caliper bore groove.
  2. Fit boot on piston with inside lip of boot in piston groove and boot fold toward end of piston that contacts inboard brake shoe. Install new thrust washer and seal on actuator screw.
  3. Lube actuator screw with brake fluid and install in piston. Fit balance spring into piston and start piston assembly into caliper housing.
    NOTE: Caliper housing and activator screws must be installed on the same side of the car as they were removed from. If parts are on the wrong side parking brake will not work.
    Fig 1: Exploded View of Delco-Moraine Single Piston Rear Caliper
    G200050
  4. Using piston installer tool (J-23072) screw piston all the way back into housing. Ensure that piston is straight or screw may damage seal as it passes through. Before removing tool, install lever away from stop, rotate forward and hold while tightening nut.
  5. Remove tool (J-23072), rotate lever back to stop and install return spring (Red-right side, Black-left side). Using boot installer tool (J-28678), drive boot in until seal bottoms in housing. Install lining and caliper. See DISC CALIPERS & PADS - REAR  under REMOVAL & INSTALLATION.
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