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Bilstein Shock Absorber

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
  • Whenever drilling into a shock absorber, wear protective eye wear. The gas in the shock absorber is pressurized, and could spray metal chips into the eyes and face when drilling.
  1. Clamp a shock absorber on a flat surface or with the piston pointing downwards.
  2. Drill a 2-3 mm {0.08-0.11 in}  hole at a point 10-20 mm {0.4-0.8 in}  shown in Fig 1, so that the gas can escape.
    Fig 1: Drilling A Shock Absorber On A Flat Surface Or With Piston Pointing
    G03638049Courtesy of MAZDA MOTORS CORP.
  3. Drill two 2-3 mm {0.08-0.11 in}  holes at points as shown in Fig 2, so that the oil can escape.
    Fig 2: Drilling Two Holes
    G03638050Courtesy of MAZDA MOTORS CORP.
  4. Turn the hole downwards.
  5. The oil can be collected by moving the piston rod several times up and down and drain the oil through the hole.
  6. Dispose of waste oil according to the waste disposal law.
    NOTE:
    • Shock absorber gas is nitrogen gas.
    • Shock absorber oil is mineral oil.