Porsche 928 Workshop Manual page 273

39
Differential, transaxle system 920
Nominal values Notes
- Lock solenoid
valve
- Pump assembly
First check the lock solenoid valve. Then remove
the pressure line from the pump assembly (with
the system depressurized).
Connect high-pressure measuring line 950911
(No. 2) -without ring connector -
to the pump
assembly.
Repeat the test. If the nominal values are now
achieved, replace the lock solenoid valve.
If the nominal values are not achieved, the fault
lies in the pump assembly.
Replace faulty parts and bleed the system.
Caution:
Wear goggles and protective gloves
when reducing pressure via the bleeder valve.
D39 - 256
0
PSD diagnosis/Troubleshooting
Prlnled In Germany - XXXV, 1995