37 13 132 Removing and installing/replacing pressure lines for oscillating motor (HA1/HA2)

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 750i, 2015 BMW 750Li, and 2015 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

DANGER OF POISONING if oil is ingested/absorbed through the skin!

RISK OF INJURY if oil comes into contact with eyes and skin!

Scalding hazard!

This work may only be carried out on an exhaust system which has cooled down.

IMPORTANT:

Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.

Do not draw off hydraulic fluid (risk of contamination).

Close off line connections with seal plug 32 1 270 .

Recycling:

Catch and dispose of hydraulic fluid in a suitable container.

Necessary preliminary tasks:

LOWER REAR AXLE

Up to 08/09:

Release banjo bolts (1).

Tightening torque 37 13 5AZ .

Hydraulic lines must be provided with suitable sealing plugs (32 1 270 ) immediately after removal!

Fig 1: Identifying Oscillator Motor Pressure Line Banjo Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Build date from 08/09:

Release screw connections (1) and (2).

Tightening torque 37 13 12AZ .

Fig 2: Identifying Oscillator Motor Pressure Line Screw Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) from holder on rear axle carrier.

Fig 3: Identifying Holder Screws On Rear Axle Carrier

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) and remove pressure lines from oscillating motor.

Pressure lines and connections on oscillating motor must be fitted with suitable sealing plugs (32 1 270 ) immediately after removal!

Tightening torque 37 13 4AZ .

Fig 4: Identifying Oscillator Motor Pressure Line Mounting Screws

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

When assembling, make sure that in succession only the seal plugs of the line to be fitted are removed.

When fitting lines, do not tilt connectors (sealing rings!) and connect fully before screwing.

Do not replace sealing rings on hydraulic lines.

Replace affected line if sealing ring is damaged.

After installation:

Fill and bleed HYDRAULIC SYSTEM
Check line connections for leaks
Carry out INITIAL DYNAMIC DRIVE OPERATION