Range Rover P38
70
BRAKES
NEW RANGE ROVER
4
REPAIR
Disposal
WARNING: It is essential that safety
goggles are worn when carrying out this
procedure.
5. Secure accumulator firmly in a suitable vice.
6. Drill 5 mm hole in top of accumulator to
depressurise nitrogen chamber.
7. Dispose of accumulator in an approved manner
Refit
8. Using a new ’O’ ring, fit accumulator to pump.
9. Reconnect battery negative lead.
10. Bleed braking system.
See this section.
ACCUMULATOR PRECHARGE - CHECK
The diaphragm type accumulator is precharged with
nitrogen at 80 bar (1160 lbf/in
2
), its function is to store
hydraulic energy. Over a period of years, a normal
loss of precharge will occur. This procedure will
indicate the extent to which precharge pressure has
fallen.
NOTE: A new accumulator at 20
°
C has a
nominal pressure of 80 bar (1160 lbf/in
2
).
Minimum acceptable pressure is 50 bar
(725 lbf/in
2
).
1. Depressurise braking system.
See this section.
2. Remove 3 nuts securing pump/motor assembly
to valance. Raise assembly from mounting to
allow clearance for pressure test adaptor.
3. Remove banjo bolt securing high pressure hose
to pump. Collect sealing washers.