BMW 7 Series: Notes On Fitting A New Pipe Or A Screw Connection

IMPORTANT: Do not kink, twist or crush lines.

Do not disassemble screw connection!

Fitting new screw connection

Insert complete new screw connection consisting of toothed ring (1), banjo bolt (2) and assembly plug (3) into air spring/pipe connection of air supply unit.

Tightening torque 37 12 3AZ.

Remove assembly plug (3).

Fig. 52: Identifying Toothed Ring, Banjo Bolt And Assembly Plug

Slide new pipe (1) into banjo bolt (2) up to marking.

Check installation position of pipe (1) by pulling back slightly.

NOTE: The toothed ring (3) has engaged correctly when the pipe (1) cannot be pulled back.

Fig. 53: Identifying Pipe, Toothed Ring And Banjo Bolt

Fitting new pipes

IMPORTANT: To avoid leaks in the air spring system, it is essential to avoid scratches on pipes in particular in the connection area!

OVERVIEW OF DYNAMIC DRIVE (ARS) PRESSURE LINES, FRONT AXLE

Fig. 54: Identifying Dynamic Drive (ARS) Pressure Lines (Front Axle)

PRESSURE LINES REFERENCE CHART

1. Pressure line , valve block VA1
2. Pressure line , oscillating motor VA1
3. Pressure line , oscillating motor VA2
4. Valve block pressure lines (short, rear-wheel drive only)

OVERVIEW OF DYNAMIC DRIVE (ARS) PRESSURE LINES, REAR AXLE

Fig. 55: Identifying Dynamic Drive (ARS) Pressure Lines (Rear Axle)

STEERING WITH ARS LINES REFERENCE CHART

1. Pressure lines , oscillating motor HA1/HA2
2. Pressure lines , underfloor HA1/HA2

OVERVIEW OF LINES, STEERING WITH ARS

Fig. 56: Identifying Pressure Lines, Hoses, Steering With ARS

PARTS REFERENCE CHART

1. Return line
2. Suction line
3. ARS expansion hose part 3
4. ARS return line
5. ARS expansion hose part 2
6. ARS+AFS return
7. ARS expansion hose part 4
8. Expansion hose part 2
9. Expansion hose part 1
10. ARS expansion hose part 1

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