spare tire BMW 528I TOURING 1997 E39 Level Control System Manual

18
Level Control Systems
Air Supply System (LVA)
The air supply system is identified as the LVA in the diagnosis program and in the repair
manual. It is mounted in the spare tire well compartment. The components are housed in
a sound deadening carrier, through rubber bushings, to prevent operating noises from
being transmitted through the vehicle’s interior.
With the exception of the compressor relay, individual replacement parts for the air supply
system are not available. If diagnosis determines a defect in any of the other air system
components, complete replacement is necessary.
The air supply system consists of the following components:
 Compressor assembly with;
- Piston compressor
- Electric motor
- Air dryer (desiccator)
- Pressure relief solenoid valve
- Pressure maintenance valve
- Check valves
 Compressor Relay (Replaceable)
 Solenoid Valve Block (2 - two way
valves)
 Lines - including distributor
E39 Features 05

43
Level Control Systems
Components (E65/E66)
Air Supply Unit (LVA)
The air supply unit is located in the spare tire recess and consists of the following compo-
nents:
 Protective cover with internal acoustic
insulation
 Lid
 Rubber-mounted component carrier
 Compressor Unit
 Compressor Relay
 Solenoid Valve Block
IndexExplanationIndexExplanation
1Rubber Mount6Air Drier
2Component Carrier7Compressor
3Compressor Relay8Solenoid Valve, Right
4Electric Motor9Solenoid Valve, Left
5Air Cleaner