BMW 740iL manuals

Bmw 740iL Repair Manual (57 pages)

Brand: Bmw | Category: Air compressors | Size: 1.89 MB |

English

Table of contents

Table of Contents

1

Level Control Systems

1

System Components

5

Gas Chamber

8

Membrane

8

Oil Chamber

8

Control Valve

9

LAD Module

11

Air Suspension Systems (EHC)

13

EHC System Overview

14

EHC Module (E39)

15

LVA Location X5

19

EHC System Operation

21

Pre-Run / Post-Run Mode

21

Normal Mode Operation

22

Tailgate Operating Mode

22

Special Operating Modes

23

Control Interrupts

23

EHC Service Information

24

Pneumatic System of EHC2

28

Air Supply Unit

29

Top: Air Drying

30

Compressor with Drier

30

Accumulator/Valve Unit

31

Valve Unit

31

Air Suspension Strut

33

Components (E65/E66)

43

EHC Module Location

44

Ride Height Sensor

46

Control Mode Flow Chart

47

Principle of Operation

48

Control Modes

48

Operating Principle

53

Safety Concept

54

Workshop Hints

55

Diagnosis

55

Service Functions

55

Review Questions

56

BMW devices