Exhaust flap vacuum reservoir, checking

Special tools, testers and auxiliary items required 

Fig 1: Hand Vacuum Pump V.A.G 1390

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Hand vacuum pump V.A.G 1390

Fig 2: Exhaust Flap Vacuum Reservoir, Checking

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Work sequence 

• Disconnect hose on vacuum diaphragm for exhaust flap at rear muffler.
• Connect hand vacuum pump V.A.G 1390 to vacuum diaphragm.
• Generate vacuum using hand vacuum pump.

• Linkage must move upward.

• Vent hand vacuum pump.

• Linkage must move downward.

If linkage does not move:

• Check linkage for ease of movement and check vacuum diaphragm for leaks.