BMW 7 Series: Replacing Vacuum Hose For Brake Booster
IMPORTANT: Before beginning work, fully press the brake pedal several times to reduce the vacuum pressure in the brake booster. This makes it easier to remove the vacuum hose.
Vacuum hose and non-return valve are welded together and are replaced together as a single unit.
Necessary preliminary tasks
- Read and comply with GENERAL INFORMATION.
- Remove MOUNTING BRACKET FOR WINDSCREEN WIPER SYSTEM
- Remove RIGHT SUSPENSION CROSS-BRACE.
IMPORTANT: Do not kink vacuum line.
Vacuum line and brake lines must not touch each other in area of brake booster! Contact with surrounding components is only permitted at the designated toothed rings! Check vacuum line for ease of movement after reinstalling mounting bracket for windscreen wiper system.
Detach vacuum line (1) from brake booster (2).
Installation: Check seal (3), replace if necessary.
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Fig. 106: Identifying Vacuum Line, Brake Booster And Seal
Remove seal (1).
Release screws (2) and remove bulkhead upper section (3).
Release screws (4).
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Fig. 107: Identifying Seal, Screws And Bulkhead Upper Section
Gently pull bulkhead upper section middle (1) upwards and
Feed out line penetration (2) towards top.
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Fig. 108: Identifying Bulkhead Upper Section And Line Penetration
Disconnect vacuum line (1) from vacuum pump (2).
Unclip vacuum line (1) in water box from holders and remove.
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Fig. 109: Identifying Vacuum Line And Pump
REPLACING VACUUM HOSE FOR BRAKE BOOSTER (N63)
IMPORTANT: Before beginning work, fully press the brake pedal several times to reduce the vacuum pressure in the brake booster. This makes it easier to remove the vacuum hose.
Vacuum hose and non-return valve are welded together and are replaced together as a single unit.
Necessary preliminary tasks
- Read and comply with GENERAL INFORMATION.
- Remove partition wall, units compartment.
Pull off partition wall seal upper part (1) in direction of arrow.
Remove non-return valve (2) from brake servo.
Installation note: Check gasket for non-return valve and replace if necessary.
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Fig. 110: Removing Non-Return Valve From Brake Booster
Unclip vacuum line (1) from line clip (2).
Unlock snap fastener (3) and detach vacuum line.
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Fig. 111: Identifying Vacuum Line, Clip, And Snap Fastener
READ NEXT:
Electrical Components Wear Indicator
REPLACING A BRAKE PAD SENSOR (FRONT)
IMPORTANT: The brake pad wear sensor must be replaced once it has been
removed (brake
pad wear sensor loses its retention capability in the brake pad).
If an alr
Parking Brake
ADJUSTING PARKING BRAKE
The parking brake test must be carried out on the dynamic brake analyzer as
follows.
Release position:
Wheel circumferential force right/left < or = 300 N.
Press parkin
Removing And Installing Actuator Unit With Control Unit For
Parking Brake (EMF)
Necessary preliminary work
Remove BOTH REAR WHEELS.
IMPORTANT: The following work must only be carried of ISID diagnosis
system with
software version 02.21 or later.
Delete fault memory.
Check fu
SEE MORE:
Replacing Air Supply System
IMPORTANT: Risk of injury!
Drain the air spring system before carrying out any work on the air supply unit,
air pipes and air spring struts! 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
remo
Higher-Level Driving Dynamics Control
Observation of the Driving Condition
The Integrated Chassis Management (ICM) control unit calculates the current
driving situation from the signals
listed below. This essentially means the longitudinal and lateral dynamic
driving condition.
Wheel speed signals from all four wheels
Lateral accel
