Check linkage and valve for wear
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 535xi, 2010 BMW 535i, 2009 BMW 535xi, 2009 BMW 535i, and 2008 BMW 535xi. However, it is still accessible from the selected car via links, so may be relevant.
Connect vacuum line (1) to vacuum unit (wastegate valve).
Vacuum linkage must retract to stop.
Wastegate valve must be sealed off by hand.
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 500 ± 10 mbar below ambient pressure (e.g. 980 - 500 = 480 mbar).
Open stop cock (2) again.
Wastegate linkage closes.
Determine gap dimension.
Gap dimension between turnbuckle and adjusting lever.
Seal off wastegate valve (1) by hand in direction of arrow up to stop.
The turbocharger must be replaced if a 1.5 mm drill bit can be inserted as pictured.
NOTE:
Gap dimension ≥ 1.5 mm.
The turbocharger is OK if a 1.5 mm drill bit cannot be inserted or can only be inserted at an angle as pictured.
NOTE:
Gap dimension < 1.5 mm.
Unfasten screws (1 and 3).
Tightening torque. See 11AZ in 11 65 TURBOCHARGER AND CONTROL .
Installation note:
Replace vacuum unit 2 (wastegate valve) .