Touareg V8-4.2L (AXQ) (2006)
Removal and installation of pistons is identical on the various brake calipers.
Special tools, testers and auxiliary items required
‹› Trim removal wedge (3409)
‹› Piston resetting tool (T10145)
Removing
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Force pistons out individually of brake caliper housing using compressed air.
Only one piston can be pressed out at a time. When doing this, hold the opposing piston in the caliper housing using the piston resetting tool - a -.
Block the other pistons, e.g. using wood blocks - b -. In addition, place a wooden board - c - in front of the piston resetting tool so that the piston will
not be damaged when pressed out.
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Remove seal with trim removal wedge (3409).
When removing, make sure that surface of piston bore is not damaged.
Installing
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The surface of the piston and seal must only be cleaned with mineral spirits and then dried.
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Thinly coat piston and seal with assembly paste (G 052 150 A2) before inserting.
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Insert oil seal into the piston bore.