BMW 7 Series: Replacing Front Left Or Right Coil Spring
Notes
IMPORTANT: Both coil springs on the relevant axle must be replaced only in the event of corrosion breakage!
The coil spring is allocated in the Electronic Parts Catalogue (EPC) under the menu item "Spring table" after the vehicle identification number has been entered and the relevant optional equipment of the car has been selected.
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 information 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:
1. Prior to each use, check the special tools for defects, modifications and operational reliability.
2. Damaged/modified special tools must not be used! 3. No changes or modifications may be made to the special tools! 4. These special tools are intended solely for the purpose of tightening and relieving cylindrical and tapered suspension springs.
5. Keep special tools dry, clean and (down to the spindle) free from grease.
6. Impact screwdrivers are prohibited!
7. Do not compress coil spring to full extent.
Necessary preliminary work
- Remove FRONT SPRING STRUT
Relieve tension on coil spring and remove from special tools 31 3 351.
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Fig. 23: Removing Coil Spring From Special Tool (31 3 351)
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!
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Fig. 24: Positioning Spring With Mounted Support Bearing And Gauge (83 30 2
210 780) In Spring Tensioner
- 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!
- 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
See also REPLACING SPRING STRUT!
WARNING: Do not compress coil spring to full extent.
Coils of coil spring must be located completely in recesses of special tools 31 3 351!
Tension coil spring.
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Fig. 25: Identifying Coil Spring With Special Tool (31 3 351)
READ NEXT:
Replacing Front Left Or Right Spring Strut Shock Absorber
Notes
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 information and instructions contained in the Owner's
Handboo
Carrying Out Ride Height Adjustment
NOTE: Ride height adjustment must be carried out after the following work:
Removal/replacement of ride height sensor or its control rod (only
necessary for vehicles with air suspension or vehicles
SEE MORE:
System Components
ICM Control Unit
Only the system components that are linked to the new architecture of the
dynamic driving systems in the
F01/F02 are described in this Product Information. In essence, this is the new
ICM control unit and the
periphery equipment directly connected to this control unit.
Three othe
System Overview
Fig. 2: CIC System Block Diagram
CIC SYSTEM EXPLANATION CHART
Central information display (CID)
Car Information Computer (CIC)
User interface (BO)
Application software
Hardware
Fig. 3: Bus Overview E9x And E8x (Not Including E83, E85, E86) Model Series,
CIC
BUS EXPLANATION CHART
ACSM - Adv
