Porsche 928 Workshop Manual page 1296

928
Differential, transaxle system
39
Removing
and installing the press-
ure reservoir
Removal
1. Pull off plug on the pump motor with the
ignition key in position 0.
2. Completely depressurize the system. For
this purpose, slowly open the bleeder valve
on the lock solenoid valve and drain the
brake fluid into a collection bottle.
Important: The system is under a press-
ure of up to 180 bar. Wear goggles and
protective gloves.
i
a
3. Undo the pressure reservoir (No. 5). Use a
universal fiiter wrench - e.g. Hazet 2171-2 -
for this purpose.
Important:
Never
loosen at the filler
screw X, as the gas pressure will escape
abruptly in this case.
i
Installation
1. Screw in the pressure reservoir (No. 5) with
new O-Ring (No. 4) and carefully tighten it
using a universal filter wrench (tightening
torque 40 46 Nm; damage is possible
above a torque of approx. 70 Nm).
Never turn
the filler screw when instal-
ling the pressure reservoir.
HoM the pump assembly in position when
lightening the pressure reservoir.
Note
Wet the seal ring with brake fluid only. Never
use brake-cylinder paste. Absolute cleanli-
ness is essential. Use only lint-free cleaning
cloths.
PSD diagnosis/Troubleshooting
Printed in Germany - XXXV. ,995
D39 - 269