Operation CHARM: Car repair manuals for everyone.

Front Shock Absorbers, Venting and Emptying






Front Shock Absorbers, Venting and Emptying

A - Venting through Drill Holes






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

Wear protective goggles while drilling.

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

Gas escapes when drilling.

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

- Drill a 6 mm hole - arrow B -, through the outer and inner strut tubes.

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

B - Open with Pipe Cutter

Special tools, testers and auxiliary items required

Pipe cutter

Wear protective goggles when drilling or sawing.

- Drill a 3 mm hole - arrow - through outer tube of shock absorber or saw through tube wall.






Gas escapes when drilling or sawing.

- Position a pipe cutter as shown in illustration and cut through outer pipe.

- Pull piston rod upward, hold inner tube in place with pliers and push it downward so that it remains in outer tube when piston rod is slowly raised.

- Remove piston rod from inner tube.

- Empty the shock absorber tube.