Volkswagen Workshop Service and Repair Manuals

Checking vacuum unit for turbocharger Removing and installing vacuum unit for turbocharger → Chapter. Adjusting vacuum unit for turbocharger → Chapter. Special tools and workshop equipment required

t  Hand vacuum pump -VAS 6213- Test prerequisites t  The hose from the turbocharger via the charge pressure control solenoid valve -N75- to the vacuum unit must have through-flow and be free of leaks. t  Charge pressure control solenoid valve -N75- OK. Procedure

–  Unscrew bolts -arrows- and remove heat shield for turbocharger.

–  Pull hose -arrow- off vacuum unit.

–  Place hose -2- of hand-operated vacuum pump -VAS 6213- onto vacuum unit connection. –  Push sliding ring -1- on hand vacuum pump -VAS 6213- to stop in direction of -arrow-. –  Operate hand vacuum pump -VAS 6213- repeatedly.   Caution Excessive pressure may damage the vacuum unit. The pressure must not exceed 800 mbar!   Note The illustration shows the installation position with the turbocharger removed.

–  Observe operating rod -1- of turbocharger vacuum unit. t  The operating rod must move from approx. 300 mbar. t  At approx. 800 mbar, the operating rod must reach the end of the adjustment travel.

–  Vent hand-operated vacuum pump -VAS 6213--arrow A-. t  The operating rod must move in the opposite direction.   Note Check the movement sequence of the operating rod in the entire adjustment range. It must move continuously and smoothly. Assembly is performed in the reverse order of removal. Specified torque of heat shield for turbocharger: 8 Nm