A4 Quattro Cabriolet V6-3.2L (BKH) (2007)
Suspension Strut / Shock Absorber: Procedures
Rear Gas-Filled Shock Absorber
Rear gas-filled shock absorbers, releasing gas
A - Releasing gas by drilling
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Clamp gas-filled shock absorber vertically in vise, with piston rod facing downward.
CAUTION!
Safety goggles must be worn when drilling.
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Drill a 3 mm diameter hole - arrow A - through outer tube of shock absorber.
Note:
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Gas will escape during drilling.
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Continue drilling until inner tube is penetrated (approx. 25 mm deep).
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Drill a second 6 mm diameter hole - arrow B - through outer and inner tubes of shock absorber.
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Hold shock absorber over a drip tray and move piston rod up and down several times through entire stroke until no more fluid comes out.
B - Opening shock absorber with pipe cutter
Special tools, testers and auxiliary items required
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Pipe cutter, e.g. Stahlwille Express 150/3