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Brake caliper FNRG60 >
< Servicing brake calipers
A4 Mk2
Brake system
Brakes, hydraulics, regulator, servo
Brake caliper FN3
Removing and installing piston for front brake caliper
Removing and installing piston for front brake caliper
Removing and installing piston for front brake caliper
Special tools and workshop equipment required
t
Assembly paste -G 052 150 A2-
t
Removal wedge -3409-
t
Piston resetting appliance -T10145-
Removing
–
Force piston out of brake caliper housing using compressed air.
Note
Place a piece of wood in the recess to prevent damaging the piston.
–
Take out seal.
–
To do so, use removal wedge -3409-.
Note
When removing ensure that the bore of the cylinder is not damaged.
Installing
–
Insert seal.
–
To do so, use removal wedge -3409-.
–
Place outer sealing lip of protective cap on the piston
–
The surface of the piston and seal should be cleaned using only methylated spirits and then dried.
–
Apply a thin coat of lithium grease -G 052 150 A2- to piston and seal before inserting.
–
Using the removal wedge -3409-, insert the inner sealing lip into the groove of cylinder.
Note
When doing this hold piston in front of caliper housing.
–
Press piston into the brake caliper housing using piston resetting tool -T10145-.
Note
The outer sealing lip of the protective cap will then lock in the groove on piston.
Brake system
Brakes, hydraulics, regulator, servo
Brake caliper FN3
Removing and installing piston for front brake caliper
Brake caliper FNRG60 >
< Servicing brake calipers