DH0302GF00032X, 3.2 - Differential Lock 32 - Test Program: Pneumatic System, Prerequisites For Testing

DH0302GF00032X, 3.2 - Differential Lock 32 - Test Program: Pneumatic System, Prerequisites For Testing
MODEL 463 (from 03/94), VIN:095 187

Test program - Pneumatic system Prerequisites for testing
Removing and installing shift cylinders: see Repair Instructions - Transfer case VG150 Chapter 9
Testing supply pressure and leak tightness of vacuum system

Special tool





001 589 73 21 00

1. Preparations for test
1.1 Install T connector in supply pipe (downstream of differential lock check valve)
1.2 Connect vacuum tester to T connector (Fig. 1)
2. Test procedure

Gasoline engine:
2.1 Ignition: On
2.2 Operate all differential locks (yellow engage indicator lamps on, electric auxiliary vacuum pump M14/1 running)
2.3 After cut-off pressure is reached, auxiliary vacuum pump off, vacuum greater than or equal to 450 mbar. Vacuum must not drop within 20 seconds.

Diesel engine:
2.1 Engine: Running
2.2 Operate all differential locks (yellow engage indicator lamps on)
2.3 After maximum vacuum supply pressure reached, engine off and ignition immediately on again. Vacuum must not drop within 20 seconds.

Connection diagram





Fig. 1
Location of vacuum tester at pipe system