STI Home

Printable version

LOCATION:

4.2 Automatic Locking Differential (ASD)   >   32 Hydraulic Test Program - Preparation for Test

Preparation for Test 1. Ignition: OFF 2. Check oil level in oil reservoir, correct if necessary. 3. Disconnect ASD control module (N30/2). 4. Remove plastic cover. 5. ASD with pressure reservoir ( 05/93) Release system pressure by loosening pressure release screw approximately ½ turn. Connect pressure gauge to: Vehicles up to VIN A004652, test connection (M) on hydraulic unit. Vehicles as of VIN A004653, pressure release screw (83c) on hydraulic unit. 6. ASD without pressure reservoir (06/93 ) Connect pressure gauge to ring cylinder according to connection diagram. Note: For easier accessibility the pressure gauge can be connected to the left ring cylinder (vent screw) or right ring cylinder (HS line). 7. Connect socket box with contact module 4 ( 22) and bridge sockets 2 and 27. Note: Checking hydraulic pump: 3.2 32 (ADS)