Rear Brake Caliper Piston: Installing

-- Install new seal in brake caliper.

Fig 1: Identifying Old Seal From Brake Caliper With Trim Removal Wedge 3409, Removal/Installation

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-- Place new protective cap on brake pistons as shown.

Fig 2: Placing New Protective Cap On Brake Pistons

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-- Install pressure nut to dimension -a- 15 mm.

Fig 3: Identifying Pressure Nut Installed On Spindle Until Dimension Achieved

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-- Insert protective cap in brake caliper groove. Use 3409 to do so.

Fig 4: Identifying Inner Sealing Lip Of Protective Boot Inserted In Groove In Brake Caliper With Trim Removal Wedge 3409

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-- Carefully slide brake piston into brake caliper. Move brake piston when doing so. Brake piston must be guided over pressure nut, this is only possible in four positions.

-- After brake piston has been guided onto pressure nut, press it as far as stop into brake caliper.

Fig 5: Pressing Piston Into Brake Caliper Until It Contacts Pressure Nut

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-- Install the pressure nut clockwise as far as the stop.

Fig 6: Identifying Pressure Nut Clockwise

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-- Make sure the rubber makes contact around brake caliper housing -arrows-.

Fig 7: Ensuring Rubber Makes Contact Around Brake Caliper Housing

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-- Press the piston into the brake caliper by hand.

Fig 8: Pressing Piston Into Brake Caliper

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