Strut With Coil Spring: Disassembly
WARNING: This page is about a different car, the 2005 BMW 645Ci and 2004 BMW 645Ci. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
You will be exposed to a high risk of injury if you fail to comply with the following points:
- Follow instructions for using spring tensioner.
- Use only specified special tools.
- DO NOT use a protective insert for Special Tool (31 3 354).
NOTE:
Replace coil springs in pairs only. Fit each axle with the same part number. Coil springs are allocated according to vehicle type, launch date and optional extras.
- Clamp Special Tool (31 4 341) at guide (1) in vice. See Fig 1. Position Spring Retainer (31 3 355) with protective insert (31 3 365) and spring retainer (31 3 354) without protective insert from above on Special Tool (31 3 341) until locking pin (2) can be felt and heard to snap into place. Check secure seating of Special Tools (31 3 354) and (31 3 355).
- Clean coil spring to remove heavy contamination. Insert upper spring plate in Special Tool (31 3 354). See Fig 2. Place lower coil of coil spring in Special Tool (31 3 355). Twist spring strut until end of coil spring is flush with end of Special Tool (31 3 355). Tension coil spring.
- Remove cap by removing nut with Special Tool (31 2 210). See Fig 3. If necessary, use Allen wrench to hold piston rod at hexagon socket to keep it from turning. Remove support bearing with shim. Remove strut from coil spring.
- Relieve tension on coil spring and remove from Special Tools (31 3 354) and (31 3 355). Remove spring plate with spring pad.
- Remove auxiliary spring (1), gaiter (2) and spring pad (3). See Fig 4.