1 Series E87 120i (N46) 5-door
Connecting special tool:
Connect special tool 32 4 000 (refer to Notes on use) with new
sealing rings to vane pump and pressure line.
1.
Connection, vane pump
2.
Connection, power steering gear
Checking pump pressure:
1.
Close valve (A).
2.
Open valve (B).
3.
Fill and bleed hydraulic system
4.
Start engine
5.
Heat hydraulic fluid to approx. 50
°
C by moving steering
wheel at increased engine speed.
6.
Close valve (B) for max. 10 secs. and read off pressure.
7.
Compare measured pressure with specified nominal pressure
.
Replace vane pump if the nominal pressure is exceeded by
more than 10 %.
Check belt tension if the nominal pressure is undershot by
more than 10 %. Replace vane pump if belt tension is OK.
After installation:
•
Fill and bleed hydraulic system
•
Check pipe connections for leaks
RA Checking function of power steering vane pump
BMW AG - TIS
24.01.2013 07:02
Issue status (12/2007) Valid only until next DVD is issued
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