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Home >> BMW >> 2009 >> 135i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1664 (Front Axle - Repair - E91) >> 3131 Spring Strut >> 31 31 031 Replacing front left or right spring strut shock absorber >> Installation

31 31 031 Replacing front left or right spring strut shock absorber: Installation

WARNING: This page is about a different car, the 2012 BMW 328i, 2011 BMW 328i, 2010 BMW 328i, and 2009 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.

Check spring pad (1) for damage, replace if necessary.

Attach spring plate (2) with spring pad (1) to coil spring.

NOTE: End of coil spring must be positively aligned to spring pad (1).
Fig 1: Locating Spring Cup And Spring Pad
G04726306Courtesy of BMW OF NORTH AMERICA, INC.

Take up coil spring with spring cup using special tools 31 3 355, 31 3 358 and 31 3 354.

Twist coil spring until lower end of coil spring (1) is flush with end (2) of special tool 31 3 355.

Fig 2: Compressing Coil Spring Using Special Tool (31 3 355)
G04726307Courtesy of BMW OF NORTH AMERICA, INC.
WARNING: Do not compress coil spring to full extent.
Special tool 31 3 354 and centering ring 31 3 358 must rest correctly on the upper spring plate!
Bottom coil of coil spring must rest completely in recess of special tool 31 3 355!
Fig 3: Compressing Coil Spring Using Special Tools
G04726305Courtesy of BMW OF NORTH AMERICA, INC.

Tension coil spring.

Check auxiliary damper (1), gaiter (2) and spring pad (3) for damage, replace if necessary.

NOTE: Make sure spring pad (3) is correctly seated on shock absorber.
Fig 4: Identifying Auxiliary Damper, Gaiter And Spring Pad
G04726283Courtesy of BMW OF NORTH AMERICA, INC.

Insert shock absorber in tensioned coil spring.

Attach thrust washer (2) to piston rod.

Check support bearing (1) for damage, replace if necessary.

Attach dust sleeve and support bearing to piston rod.

Fig 5: Identifying Support Bearing And Support Disc
G04726282Courtesy of BMW OF NORTH AMERICA, INC.

Replace nut and tighten down with special tool 31 2 210 (grip piston rod in the process).

Tightening torque 31 31 2AZ .

Fit cover cap.

Fig 6: Removing Protective Cap Nut Using Special Tool (31 2 210)
G04726281Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Spring pad (1) must rest positively on spring plate (2)!
Upper end of coil spring must rest on stop of spring pad (1)!
Fig 7: Identifying Spring Cup And Spring Pad
G04726306Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Lower end of coil spring (2) must rest on stop of spring pad (1)!

Relieve tension on coil spring.

Check installation position of gaiter, correct fold if necessary.

Fig 8: Identifying Coil Spring And Spring Pad
G04726284Courtesy of BMW OF NORTH AMERICA, INC.