volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Relays and Modules - Brakes and Traction Control > < Master Cylinder/Brake Booster, Servicing (With ABS/EDS/ASR/ESP)|Page 5760
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Vacuum Pump: Service and Repair

Vacuum pump for brake booster 

Removing 
^

Remove retainer for wiring harness from vacuum pump.

^

Loosen vacuum hose clamp (arrow-A-) and remove hose from pump.

^

Remove bolts (arrow-B-) on flange.

^

Remove vacuum pump.

Note:  The vacuum pump cannot be repaired.

Installing 

Note:  When installing the vacuum pump be sure that the follower engages correctly with the camshaft.

^

Install bolts (arrows -B-) on cylinder head flange.

^

Secure vacuum hose with clamp (arrow -A-).

^

Check function of check valve -A-.
-

Air must pass through in direction of arrow

-

Valve must remain closed in opposite direction

^

Ensure that check valve is installed correctly.

Relays and Modules - Brakes and Traction Control > < Master Cylinder/Brake Booster, Servicing (With ABS/EDS/ASR/ESP)|Page 5760