A6 Quattro Sedan V6-3.2L (BKH) (2005)
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Suspension Strut / Shock Absorber: Procedures
Front Gas-Filled Shock Absorber
Front gas-filled shock absorber, release gas and draining
A - Venting by drilling
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Secure gas-filled strut vertically in vise, with piston rod facing down.
CAUTION: Always wear eye protection when performing this procedure.
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Drill a 3 mm diameter hole - arrow A - through outer tube of strut.
Note: Gas will escape while drilling.
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Continue to drill through inner tube (approximately 25 mm deep).
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Drill a second hole 6 mm in diameter - arrow B - through outer and inner tubes of strut.
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Hold strut over an appropriate container for catching oil and move piston rod repeatedly through its entire stroke until no more oil flows out.
B - Opening with a pipe cutter
Special tools, testers and auxiliary items required
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Pipe cutter, commercially available
CAUTION: Always wear eye protection when performing this procedure.
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Drill a 3 mm in diameter hole - arrow - through outer tube of strut or saw through tube wall.
Note: Gas will escape while drilling or cutting.
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Attach a pipe cutter (commercially available), as shown in illustration, and cut through outer tube.
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Pull piston rod upward, hold inner tube with pliers during this and press it downward so that it stays in outer tube when piston rod is pulled up
slowly.
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Remove piston rod from inner tube.
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Empty strut tube.