Porsche 928 Workshop Manual page 231

928
Differential. Transaxle Svstem
39
Procedure
Execution I Notes
Example:
Measurement 2 = Gauge pressure lo...20 bar
Actual values: Gauge pressure = 13 bar,
locking torque measured = 240 Nm (177 ftlb)
Specified value according to table at 13 bar:
120...300 Nm (88...221 ftlb)
Measurement 2 o.k. since results are within the
tolerance band (boundary value window)
- Measurement 4 = Minimum locking torque of
500 Nm (369 ftlb) must be
ensured. Equivalent pressure
60 bar or higher
- Measurement 5 = pilot pressure valve
Proceed to pressure release position and read off
pressure at gauge. Specified value: approx.
3.0...4.5 bar. If measurements are out of limits,
repeat process, starting from low pressure max.
20 bar. In this case, release pressure by switching
off ignition.
a
PSD-Diagnosis / Troubleshooting D39- 211
Printed in Germany . XXVII, 1991