BMW X5: Checking Function Of Power Steering Vane Pump
Special tools required:
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.
Prior to this check, first check all hose connections, the vane pump and the
power steering gear for leaks.
Necessary preliminary tasks:
- Draw off and dispose of hydraulic fluid from fluid reservoir.
- Remove front assembly underside protection.
- Disconnect pressure line from vane pump.
Connecting special tool:
Connect special tool 32 4 000 with new sealing rings to vane pump and
pressure line.
- Connection, vane pump
- Connection, power steering gear
Fig. 85: Identifying Special Tool (32 4 000)
Checking pump pressure:
- Close valve (A).
- Open valve (B).
- Fill and bleed hydraulic system.
- Start engine
- Heat hydraulic fluid to approx. 50ºC by moving steering wheel at
increased engine speed.
- Close valve (B) for max. 10 secs. and read off pressure.
- Compare measured pressure with specified nominal pressure.
Fig. 86: Identifying Special Tool (32 4 000)
Replace vane pump if the nominal pressure is exceeded by more than 10 %.
Check belt tension if the nominal pressure is undershot by more than 10 %.
Replace vane pump if belt
tension is OK.
After installation:
- Fill and bleed hydraulic system.
- Check pipe connections for leaks.
READ NEXT:
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 d
Special tools required:
32 1 260
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 ut
WARNING: Danger to life!
Mount securing fixture for vehicle on lifting platform to prevent the
vehicle from slipping off or tilting down.
Secure engine in installation position to prevent it from fal
SEE MORE:
REPLACING OUTER TAIL PANEL SECTION
Read contents of Body, General.
Remove or cover those vehicle components in the repair area which are
susceptible to heat or dust.
Spot-weld bonding is used on this vehicle. Observe specific procedure.
Use only approved spot-welding apparatus for repairs!
Follo
Principle
The Check Control system monitors functions in
the vehicle and notifies you of faults in the monitored
systems.
General information
A Check Control message is displayed as a combination
of indicator or warning lights and text
messages in the instrument cluster and, if applicable,
in the He