A - Venting Through Drill Holes

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-- Secure gas-filled shock absorber vertically in vise, with piston rod facing down.

Fig 1: Emptying Rear Gas-Filled Struts

Courtesy of AUDI OF AMERICA, LLC

WARNING:

Wear Protective Eyewear While Drilling.

-- Drill a 3 mm hole -arrow A- through the shock absorber outer tube.

NOTE:

Gas escapes when drilling.

-- Continue drilling until the tube inside is drilled through (approximately 25 mm deep).

-- Drill a second 6 mm hole -arrow B- through the outer and inner shock absorber tubes.

-- Hold shock absorber over appropriate container for catching oil and move piston rod repeatedly through entire stroke until no more oil flows out.