as far as the ace filter goes - no idea, never done it
but from the rave cd:
Filter - high pressure - ACE
CAUTION: The ACE hydraulic system is
extremely sensitive to the ingress of dirt or
debris. The smallest amount could render the
system unserviceable. It is imperative that the
following precautions are taken.
l ACE components are thoroughly cleaned
externally before work commences;
l all opened pipe and module ports are
capped immediately;
l all fluid is stored in and administered
through clean containers.
Remove
1. Raise vehicle on a ramp.
2. Position container to collect fluid spillage.
3. Remove filter cap and discard 'O' ring.
4. Fit M6 bolt into base of filter and pull on bolt to
remove filter from valve block. Do not turn
filter in valve block.
CAUTION: Always fit plugs to open
connections to prevent contamination.
Refit
1. Ensure new filter has 'O' ring fitted, then fit filter
to valve block.
2. Fit new 'O' ring to filter cap. Fit cap and tighten
to 35 Nm (26 lbf.ft).
3. Lower vehicle.
4. Check fluid level in ACE/PAS reservoir.
+FRONT SUSPENSION,
ADJUSTMENTS, Fluid level check - ACE
system.
5. Start and run engine for 2 minutes, then re-check
fluid level in ACE/PAS reservoir.
have you got the Rave CD? if not download it from here
The Green Oval - Downloads | Land Rover Data