31 33 100 Replacing front left or right coil spring

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2015 BMW 740Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

IMPORTANT: Both coil springs on the relevant axle must be replaced only in the event of corrosion breakage!

WARNING:

Prior to each use of special tool 31 3 340 , it is essential to read the associated Owner's Handbook fully!

All the safety precautions and instructions contained in the Owner's Handbook must be strictly observed!

Failure to observe these safety precautions and instructions increases the risk of serious physical injury, damage to your health and damage to property and equipment!

IMPORTANT:

Use only the BMW approved special tool!
Prior to each use, check the special tools for defects, modifications and operational reliability.
Damaged/modified special tools must not be used!
No changes or modifications may be made to the special tools!
These special tools are intended solely for the purpose of tightening and relieving cylindrical and tapered suspension springs.
Keep special tools dry, clean and (down to the spindle) free from grease.
Impact screwdrivers are prohibited!
Do not compress coil spring to full extent.

Installation note:

All screws, nuts, bolts and hose clamps removed during the repair must be replaced.
Retaining elements on chassis and suspension and steering parts must be replaced.

Necessary preliminary tasks:

Remove FRONT SPRING STRUT .

Relieve tension on coil spring and remove from special tools 31 3 351 .

Fig 1: Relieve Tension On Coil Spring Using Special Tool (31 3 351)

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: To be able to align the support bearing to the spring-strut bore when assembling the spring strut (see illustration), the spring in the spring tensioner must be positioned correctly!

The spring coil with the largest diameter must be positioned against the support bearing
The upper coil spring end must be in contact with the limit position of the spring pad!

Fig 2: Identifying Spring Mounting Position With Support Bearing And Gauge (83 30 2 210 780) In Spring Tensioner
Courtesy of BMW OF NORTH AMERICA, INC.
Position the spring with mounted support bearing and gauge 83 30 2 210 780 in the spring tensioner so that the marks (1) are positioned vertically toward the top.

Position the gauge on the support bearing:

Right support bearing

In vehicles to 04/2010, position mark "RIGHT A" on arrow at support bearing

In vehicles from 04/2010, position mark "RIGHT B" on arrow at support bearing

Left support bearing

Position mark "LEFT" on arrow at support bearing