Brake Caliper Piston, Removing And Installing, 1LF/1LL: Installing

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NOTE:

Install the entire repair kit.

Only use mineral spirits to clean the brakes.

When a brake caliper piston or a piston cylinder are damaged, the brake caliper must be replaced.

-- Clean the surfaces on the pistons and seal only with mineral spirits and then dry.

-- Thinly coat the brake caliper pistons and seals with lithium grease before installing.

-- Insert inner seal in brake caliper groove using the :3409 .

-- Insert the protective cap using the :T10146/5 -1 - and :T10145 -2-.

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-- Press the protective cap onto the brake caliper housing so that it contacts the brake caliper housing all around -arrow-.

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It should no longer be possible to remove the protective cap from the brake caliper housing by hand.

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-- Thinly coat the pistons and protective cap with lithium grease before installing.

-- Lift the brake caliper piston with commercially available extension -1- and ratchet adapter and lightly press against the protective cap as shown.

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Do not tilt the piston to avoid damaging the sealing boot.

-- Position the compressed air nozzle -2- on the bore hole for the brake hose and blow compressed air on the protective cap (maximum 3 bar (43.51 psi)). At the same time the protective cap jumps onto the piston.

-- Press piston -2- into the brake caliper housing by hand.

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The inner sealing lip of the protective cap -1- thereby slips into the groove on the piston.

-- Repeat the work procedure on the other brake caliper piston.

-- Install the brake caliper. Refer to BRAKE CALIPER, REPLACING, STEEL BRAKES, 1LA/1LJ/1LF/1LL/1LU/1LV AND CERAMIC BRAKES, LN/1LW .