Coil Spring & Shock Absorber: Assembly

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2008 BMW Z4, 2007 BMW Z4, 2006 BMW Z4, 2005 BMW Z4, and 2004 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

Place coil spring in spring holders. End of spring must be flush with end of spring holder.
Replace auxiliary spring (1), if necessary. Check protective tube (2) and spring pad (3), replace if necessary. Opening on spring plate and spring pad must be flush. See Fig 1 .
Insert spring strut shock absorber into coil spring and upper spring plate. Observe installation sequence. See Fig 2 .
Replace self-locking nut (1) and screw onto piston rod so that it is flush. See Fig 3 . Coil spring must fit positively in lower spring plate/spring pad. Release tension on coil spring until it is fully resting in lower spring plate.
Tighten self-locking nut with special tool (31 2 210). If necessary, grip piston rod. See Figure . Tighten nut to specification. See TORQUE SPECIFICATIONS .
Fully release tension on coil spring and remove.

Fig 1: Checking Spring Strut Components

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Fig 2: Identifying Installation Sequence Of Spring Strut Shock Absorber

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Fig 3: Locating Self-Locking Nut On Piston Rod

Courtesy of BMW OF NORTH AMERICA, INC.