Removing and installing pistons for front brake caliper
Removing and installing pistons for front brake caliper
Removing and installing pistons for front brake caliper
Special tools and workshop equipment required
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Wedge -3409-
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Piston resetting appliance -T10145-
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Lithium grease -G 052 150 A2-
Removing
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Force pistons out of brake caliper housing one at a time using compressed air.
The pistons can only be removed one at a time. Hold the opposite piston in the caliper housing with piston resetting appliance -a-. Use blocks of wood or similar -b- to keep the other pistons in place. Also place a piece of wood -c- against the resetting tool to prevent the piston from being damaged when it is forced out.
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Remove seal using removal wedge -3409-.
When removing ensure that the bore of the cylinder is not damaged.
Installing
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The surface of the piston and seal should be cleaned using only methylated spirits and then dried.
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Apply a thin coat of lithium grease -G 052 150 A2- to piston and seal before inserting.
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Insert the seal into the brake caliper housing.
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Fit protective cap onto piston.
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Push piston into caliper housing, exerting even pressure.
The protective cap must fit securely in the groove; if necessary, apply additional pressure with piston resetting appliance.