BMW 7 Series: Removing And Installing/Replacing Dynamic Drive Valve Block
Notes
WARNING: DANGER OF POISONING if oil is ingested/absorbed through the skin! RISK OF INJURY if oil comes into contact with eyes and skin!
IMPORTANT: Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.
Do not draw off hydraulic fluid (risk of contamination).
NOTE: In all warranty cases you must always provide a fault memory printout, even where there is no fault entry, with the defective component. In addition, the valve block openings must be sealed with the protective caps (of the new part).
Necessary preliminary work
- Partially remove FRONT RIGHT WHEEL ARCH COVER (REAR SECTION)
- Remove RIGHT UNDERBODY PANELLING
Disconnect return line with special tool 13 3 010.
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Fig. 132: Disconnecting Return Line Using Special Tool (13 3 010)
Remove valve block on front right vehicle underbody
Release control lines (1) to rear axle swivel motor on valve block.
Release control lines (2) to FA swivel motor on valve block.
Release supply and return lines (3) to valve block.
Allow hydraulic fluid to drain off through opened connections and dispose of properly.
Tightening torque 37 13 1AZ - 3AZ
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Fig. 133: Identifying Control Lines, Supply Lines And Return Lines On Valve
Block
IMPORTANT: Hydraulic line and connection on valve block must be fitted with suitable seal plugs immediately after removal! 32 1 270
Disconnect plug connections (1) and (2).
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Fig. 134: Identifying Plug Connections
Unclip wiring harness.
Release screws (1) and remove valve block.
Tightening torque 37 14 7AZ.
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Fig. 135: Identifying Valve Block Mounting Screws
IMPORTANT: When assembling, make sure that in succession only the seal plugs of the line to be fitted are removed.
When fitting lines, do not tilt connectors (sealing rings!) and connect fully before screwing.
Do not replace sealing rings on hydraulic lines.
Replace affected line if sealing ring is damaged.
Check seating and position of holders and line clips, correcting if necessary.
After installation
- Fill and bleed HYDRAULIC SYSTEM
- Check line connections for tightness
- If necessary, carry out INITIAL DYNAMIC DRIVE OPERATION
READ NEXT:
Replacing Air Supply System
IMPORTANT: Risk of injury!
Drain the air spring system before carrying out any work on the air supply unit,
air pipes and air spring struts! Danger of injury if this instruction is not
complied with!
Replacing Ventilation Line For Air Supply Unit
Necessary preliminary tasks
Remove REAR BUMPER TRIM
Detach ventilation line (1) in direction of arrow from air supply unit.
Unclip ventilation line (1) from holders.
Fig. 139: Locating Air Supply
SEE MORE:
Roof-mounted luggage
rack
General information
Installation only possible in roof drip rail with
flaps. Further information is available from a dealer's
service center or another qualified service
center or repair shop.
Roof racks are available as special accessories.
Roof drip rail with flaps
The fixing points are located i
Checking/Topping Up Oil Level In Rear Differential
WARNING: DANGER OF POISONING if oil is ingested/absorbed through the
skin!
RISK OF INJURY if oil comes into contact with eyes and skin!
IMPORTANT: Risk of damage!
To avoid serious damage to the rear axle differential, it is essential to use
only
APPROVED OILS in the rear axle differential.
Undo oi
