Brake Caliper Piston, Rear Brakes ZOH BIR 38: Installing

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Install in reverse order of removal. Note the following:

-- The surface of the piston and seal must only be cleaned with mineral spirits and then dried.

-- Thinly coat the piston and the seal with Assembly Paste G 052 150 A2 before installing.

-- Place the cap with the outer sealing lip on the piston.

Fig 1: Identifying Protective Seal With Outer Sealing Lip On Piston

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-- Insert inner sealing lip in cylinder groove with Trim Removal Wedge 3409.

Fig 2: Identifying Inner Sealing Lip Inserted Into Groove In Cylinder Using Wedge 3409

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Hold piston in front of brake caliper for this procedure.

-- Turn the thumbwheel on the Brake Caliper Tool T10165 to the right to install the piston. Be careful not to damage the cap.

Fig 3: Identifying Thumbwheel On T10165

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-- Use the Resetting & Extracting Tool - Plate T10165/1 to help you bolt it on.

Install the Brake Caliper Tool T10165 so that the collar on the Resetting & Extracting Tool - Plate T10165/1 is touching.

-- Install the brake caliper. Refer to BRAKE CALIPER, REAR BRAKES BOSCH ZOH BIR 38 .