A6 Quattro Sedan V6-2.8L (AHA) (1998)
Suspension Strut / Shock Absorber: Service and Repair
Oil/Gas-Filled Components, Proper Disposal
Oil/gas-filled components, proper disposal
Shock absorbers, depressurized
A - opening by drilling
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Secure gas-filled strut vertically in vise, with piston rod facing down.
WARNING: Always wear eye protection when performing this procedure.
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Drill a hole 3 mm diameter (arrow A) through outer tube of strut.
Note: Gas will escape while drilling.
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Continue to drill through the inner tube (approx. 25 mm deep).
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Drill a second hole 6 mm diameter (arrow B) through outer and inner tubes of strut.
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Hold strut over an appropriate drain bucket and move piston rod repeatedly through it's entire stroke until no more oil flows out.
B - Opening with a pipe cutter
WARNING: Always wear eye protection when performing this procedure.
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Drill a hole 3 mm diameter (arrow A) 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 (e.g. 150/3 Stahlwille Express) 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 the outer tube when piston rod is pulled up
slowly.
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Remove piston rod from inner tube.
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Empty the strut tube.