3 Series E90 335xi (N54) SAL
Calibration for vacuum pressure measurement:
Release lock nut on controller (1).
Press setting with measurement.
-
Determine ambient pressure.
-
Seal stop cock (2) in direction of arrow.
-
Set controller (1) to 200
±
±
±
±
10 mbar below ambient pressure
(e.g. 980 - 200 = 780 mbar).
Open stop cock (2) again.
Wastegate valve closes.
Initial position (1) of wastegate linkage with preset vacuum
pressure.
Wastegate valve virtually closed.
Checking turnability of wastegate valve.
a)
Wastegate valve can be turned with minimal force.
Adjustment of wastegate valve is OK.
b)
Wastegate valve has play and can be turned without
resistance, wastegate valve open too far.
Carry out adjustment of wastegate valve, shorten linkage.
c)
Wastegate valve cannot be turned, wastegate valve closed.
Carry out adjustment of wastegate valve, lengthen linkage.
Adjustment at linkage:
To lengthen linkage, turn turnbuckle (1) max. 180
°
in
counterclockwise direction.
To shorten linkage, turn turnbuckle (1) max. 180
°
in clockwise
direction.
Engage tension jack (1) on lever in direction of arrow.
Check turnability of wastegate valve again.
RA Replacing vacuum unit (wastegate) (N54)
BMW AG - TIS
22.02.2013 10:02
Issue status (12/2007) Valid only until next DVD is issued
Copyright
Page - 3 -
