Turbocharger Vacuum Diaphragm, Checking

WARNING: This page is about a different variant/trim than selected.

Special tools and workshop equipment required

Hand Vacuum Pump VAS 6213

Test Conditions:

The hose from the wastegate bypass regulator valve -N75- must be free of kinks.
The wastegate bypass regulator valve is OK.

Procedure:

-- Remove the engine cover/upper air filter housing. Refer to ENGINE COVER/UPPER AIR FILTER HOUSING .

-- Connect the hand vacuum pump VAS 6213 to the vacuum diaphragm -arrow-.

Fig 1: Connecting Hand Vacuum Pump VAS 6213 To Vacuum Diaphragm

Courtesy of VOLKSWAGEN UNITED STATES, INC.

-- Set the slide ring -1- on the hand vacuum pump VAS 6213 to position -B- for "pressure".

Fig 2: Setting Slide Ring On Hand Vacuum Pump VAS 6213 To Position For "Pressure"

Courtesy of VOLKSWAGEN UNITED STATES, INC.

CAUTION:

The pressure must not exceed 750 mbar. If the pressure is exceeded, the vacuum diaphragm can be damaged.

-- Operate the hand vacuum pump VAS 6213 several times and observe the rods.

The linkage -A- must move approximately 300 mbar and be at approximately 700 mbar at end position.

Actuator lift is approximately 10 mm.

Fig 3: Identifying Linkage Movement

Courtesy of VOLKSWAGEN UNITED STATES, INC.

NOTE:

If pressure cannot be raised with the hand vacuum pump VAS 6213 or the pressure drops immediately, check the hand vacuum pump VAS 6213 and connecting hoses for leaks. If no malfunction can be found: Replace the vacuum diaphragm. Refer to TURBOCHARGER VACUUM DIAPHRAGM .