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Adjusting turbocharger vacuum unit (engine codes BZB, CGYA, CDAA, CDAB) > < Removing and installing turbocharger

Golf Mk5

Checking vacuum unit for turbocharger
Checking vacuum unit for turbocharger
Special tools and workshop equipment required
   
t  Hand vacuum pump -VAS 6213-
Test prerequisite:
t  Hose from turbocharger via charge pressure control solenoid valve -N75- to vacuum unit must have through-flow (not blocked).
t  Charge pressure control solenoid valve -N75- OK.
Procedure:
–  Remove engine cover panel → Chapter.
  W00-10259
–  Connect hand-operated vacuum pump -VAS 6213- to vacuum unit -arrow-.
  N21-10114
–  Move slide ring -1- on hand vacuum pump -VAS 6213- to position -B- for „pressure“.
  Caution
The pressure must not exceed 750 mbar! If the pressure is exceeded, the vacuum unit can be damaged.
–  Operate hand vacuum pump -VAS 6213- several times and observe the linkage.
  N24-10282
The linkage -A- should start to move at a pressure of approx. 300 mbar and be at its limit stop at a pressure of approx. 700 mbar.
The stroke of the rod is approx. 10 mm.
  Note
If no pressure can be built-up using the hand vacuum pump -VAS 6213- or the pressure drops immediately again, check hand vacuum pump -VAS 6213- and connecting hoses for leaks. If no fault is found: renew vacuum unit → Chapter.
  N21-10115

Adjusting turbocharger vacuum unit (engine codes BZB, CGYA, CDAA, CDAB) > < Removing and installing turbocharger