Connect/disconnect testing unit at brake booster - AR43.10-P-0024-01V

Fig 1: Identifying Vacuum Tester (201 589 13 21 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Test Connection (168 589 08 63 00)

Courtesy of MERCEDES-BENZ USA

Shown on model 171 

1. Detach check valve (17) of vacuum line (8) from brake booster (1) (model 211, 219) or BAS brake booster (A7/7) (except model 211, 219).
2. Connect test connection (031) between brake booster (1) (model 211, 219) or BAS brake booster (A7/7) (except model 211, 219) and vacuum line (8).
3. Connect vacuum tester (030) test connection (031).
   Fig 3: Connecting/Disconnecting Testing Unit At Brake Booster

   Courtesy of MERCEDES-BENZ USA