A4 Quattro Sedan V6-3.0L (AVK) (2002)
Suspension Strut / Shock Absorber: Service and Repair
Front Gas-Filled Shock Absorbers, Releasing Gas
Front gas-filled shock absorbers, releasing gas
A. Drilling open
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Clamp gas-filled shock absorber vertically in vice with piston rod facing downward.
WARNING!: Wear protective goggles while drilling.
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Drill 3 mm diameter hole -arrow A- through outer tube of shock absorber.
Note: Gas escapes during the drilling process.
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Keep drilling until inner tube is penetrated (approximately 25 mm deep).
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Drill second 6 mm diameter hole -arrow B- through outer and inner tube of shock absorber.
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Hold shock absorber over a drip tray and execute full piston rod stroke several times until no further oil emerges.
B. Opening with pipe cutter
WARNING!: Wear protective goggles while drilling or sawing.
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Drill 3 mm diameter hole -arrow- through outer tube of shock absorber/saw through tube wall.
Note: Gas escapes while you are drilling/sawing.
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Position pipe cutter (e.g. Stahlwille Express 150/3) as shown and cut through outer tube.
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Pull up piston rod; in doing so, hold inner tube with pliers and press tube downward so that it remains in outer tube while piston rod is slowly
pulled up.
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Pull piston rod off inner tube.
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Drain shock absorber tube.