Audi A6 2005 Workshop Manual page 154

Audi A6 2005 ➤ , Audi A6 Avant 2005 ➤
Brake system - Edition 04.2019
– Carefully lever protective cap -1- and seal out of brake caliper
with gentle movements using removal tool - T 40338- -2-; take
care not to damage groove for protective cap in brake caliper.
Note
When removing ensure that the bore of the cylinder is not dam‐
aged.
– Take out seal.
Installing
– The surface of the piston and seals should be cleaned using
only methylated spirits and then dried.
– Apply a small amount of assembly paste to piston and seals
before inserting.
– Insert inner seal in groove in brake caliper housing with re‐
moval wedge 3409.
– Press in protective cap with special tool -1- and -2-.
– Item -1-: Assembly tool for protective caps -T10146/5-
– Item -2-: Piston resetting appliance -T10145-
Use jaw protectors
– Push protective cap onto brake caliper housing and press it
on so that it makes contact all round.
Use jaw protectors
– At this stage it should not be possible to remove the protective
cap from the brake caliper housing by hand.
– Apply a small amount of assembly paste to piston and seals
before inserting.
– Hold piston with standard extension and ratchet attachment
as shown in illustration and press lightly onto protective cap.
Keep the piston straight to avoid damaging the seal.
– Inflate protective cap with compressed air (maximum 3 bar).
The protective cap will then locate around the brake piston.
Use jaw protectors
– Press piston into brake caliper housing by hand.
Note
The inner sealing lip on the protective cap will then locate in the
piston groove.
Note
After servicing and installing brake caliper, bleed brake system
⇒ page 154 .
148
Rep. gr.47 - Brakes - hydraulics