BMW X5 Owners & Service Manuals

BMW X5: Replacing Air Supply Unit (Version With Dynamic Drive)

WARNING: Danger of injury! Drain the air spring system before carrying out any work on the air supply unit, air pipes and air springs! Danger of injury if this instruction is not complied with! Risk of damage! Extreme cleanliness must be ensured in the connection area of the pipes during removal and installation. Even the smallest of dirt particles can cause leakage in the air spring system.

NOTE: Read and comply with notes on air spring system.

Necessary preliminary tasks:

Release screw pins (1) and open holder.

Installation:

Replace screw pins.

Tightening torque, see 37 14 22AZ in 37 14 ELECTRIC COMPONENTS

Pump Assembly With Connector
Fig. 89: Identifying Screw Pins

Expose control lines (1) up to front tension strut.

Remove connecting line for valve block from holder (3).

Release nuts (2) and remove valve block from body.

Installation:

Replace self-locking nuts.

Tightening torque, see 37 14 10AZ in 37 14 ELECTRIC COMPONENTS

Pump Assembly With Connector
Fig. 90: Identifying Control Lines And Nuts

Further procedure is identical to:

After installation:

REPLACING AIR SUPPLY UNIT

WARNING: Danger of injury! Drain the air spring system before carrying out any work on the air supply unit, air pipes and air springs! Danger of injury if this instruction is not complied with! Risk of damage! Extreme cleanliness must be ensured in the connection area of the pipes during removal and installation. Even the smallest of dirt particles can cause leakage in the air spring system.

NOTE: Read and comply with notes on air spring system.

Necessary preliminary tasks:

IMPORTANT: Do not kink, twist or crush lines

Disconnect plug connections (1-3).

Disconnect quick-connect coupling (4) and seal both lines with adhesive tape.

Pump Assembly With Connector
Fig. 91: Identifying Quick-Connect Coupling And Plug Connections

Release banjo bolts (1, 2).

Lay pipes to one side and seal off with adhesive tape.

Installation:

Check banjo bolts for dirt, clean if necessary. Then carefully screw in banjo bolts by hand to avoid damaging the plastic threads and with it the air supply unit.

Tightening torque, see 37 12 1AZ in 37 12 CONTROL AND SUSPENSION SYSTEMS, REAR

Pump Assembly With Connector
Fig. 92: Identifying Banjo Bolts

Unscrew nuts (1).

Remove air supply unit (2).

Installation:

Replace self-locking nuts.

Tightening torque, see 37 22 1AZ in 37 22 PUMP UNIT WITH RESERVOIR

Pump Assembly With Connector
Fig. 93: Identifying Air Supply Unit And Nuts

After installation:

TROUBLESHOOTING

TROUBLESHOOTING ON DYNAMIC DRIVE (ARS)

TROUBLESHOOTING CHART

TROUBLESHOOTING

TROUBLESHOOTING

TROUBLESHOOTING

TROUBLESHOOTING

TROUBLESHOOTING

TROUBLESHOOTING

TROUBLESHOOTING

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