BMW 7 Series: Vacuum Pump
REMOVING AND INSTALLING/REPLACING VACUUM PUMP (N63)
IMPORTANT: Installation note: Due to the risk of damage to the engine gaskets/seals and the lack of brake boosting, make sure before starting the engine that all the vacuum lines are connected.
Vacuum pump is fitted on cylinder head 1 to 4 at rear on intake camshaft.
Necessary preliminary work
- Press brake pedal several times in order to reduce vacuum pressure in brake booster.
- Remove right CATALYTIC CONVERTER.
- Remove right heat shield.
- Detach vacuum line from vacuum pump.
Release screws (1).
Remove heat shield (2).
Remove vacuum hose.
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Fig. 521: Identifying Heat Shield With Mounting Screws
Release screws (1).
NOTE: Bolts (1) are secured against falling out.
Release screw (2).
Remove vacuum pump (3).
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Fig. 522: Identifying Vacuum Pump With Mounting Bolts And Screws
Drive (1) must be rotated into correct position prior to installation.
Installation note: Replace sealing ring (2) and coat with grease to facilitate fitting.
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Fig. 523: Identifying Sealing Ring And Drive
Installation note: Align vacuum pump drive to groove (1) of intake camshaft.
Vacuum pump can best be installed when groove (1) is vertically aligned.
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Fig. 524: Identifying Intake Camshaft Groove
Check function of DME.
Check vacuum pump for leaks and correct operation.
READ NEXT:
El.Valve For Exh. Gas Recirculation
REPLACING BOTH PRESSURE CONVERTERS FOR TURBOCHARGER (N63)
Necessary preliminary work
Partially release charge air cooler EXPANSION TANK.
Partially release AUXILIARY WATER PUMP for exhaust turbochar
Replacing Left Control Sensor (N63)
Notes
WARNING: Risk of burning!
Only perform this work after engine has cooled down.
Necessary preliminary work
Check function of DME control unit
Switch off ignition
Remove AIR FILTER HOUSING
Un
SEE MORE:
Auto Start/Stop function
Concept
The Auto Start/Stop function helps save fuel.
The system switches off the engine during a
stop, for instance in traffic congestion or at traffic
lights. Drive-ready state remains switched on.
The engine starts automatically for driving off.
General information
After each engine start using
A/C Performance Test (R 134a)
Observe the following conditions prior to the A/C performance test
1. Provision of a diagnosis system. Safeguard electrical system integrity by
checking the fault memory (no
faults in the fault memory).
2. Provide a thermometer with separate gauge.
3. Perform the test in a suitable workshop area
