OK, I know this is a long description, but please bear with me as I need some input.
At last I had the opportunity to do some checks on the D. I removed the front spheres and checked their pressures on the old Trusty Tester. Down to around 200 psi. Out of the cupboard came the CX ones I had stashed away. One tested at 850 psi and the other at over 1000. A bit suss and maybe too high, but I thought I'd give them a go anyway. Changing went OK. Car drove OK, front certainly felt "floatier" than before. OK, sez I, let's check the rears. Same thing, both down around the 100 mark. Put the other 2 CX ones in, testing around the 450 mark. So far so good.
When I put the suspension down to normal after doing the rears, the front refused to drop from full height. With no pressure in the system (height control on lowest, bleed valve open) the front still aimed for the sky. Driving it over a couple of gentle bumps failed to persuade it either.
Up in the air again, take off the covers and suss out the height corrector (HC). The only way I could get the front pressure down was to bleed the pressure from the front HC. I removed this and checked its flow through with compressed air and it seems OK. The three states of flow, up, down and hold correspond to the three positions of the shuttle. OK, put it back in and check it out. At this stage I decided to return to the best one of the D spheres and replaced the over 1000 psi CX sphere on spec. (Just in case this was causing trouble. Still tests OK on the tester however)
This time I have no front suspension pressure at all! Back rises and falls normally. The front steadfastly refuses to budge. I've bled the pressure through with the bleed valve on the pressure regulator, and I've cycled the lever up and down a few times. Still no height.
Now I'm sure I'm missing something basic and simple, but it's too damn hot to fiddle out there any more tonight, so I'm appealing to the Brains Trust.
A couple of questions if I may. Should I see much physical movement of the lever connecting to the HC? (The fork arrangement connected to the anti roll bar, and the control linkage, which moves the ball on the end.) This seems strangely static making me wonder if in fact the anti-roll bar is seized in some way.
Is there a more detailed way of bleeding the suspension after draining it like I have? There was a sound of rushing air through the HC once I closed the bleed valve and the pump came on load.
Hope someone can supply some info. Or maybe wave a magic wand and fix it remotely?
Cheers, Pottsy
At last I had the opportunity to do some checks on the D. I removed the front spheres and checked their pressures on the old Trusty Tester. Down to around 200 psi. Out of the cupboard came the CX ones I had stashed away. One tested at 850 psi and the other at over 1000. A bit suss and maybe too high, but I thought I'd give them a go anyway. Changing went OK. Car drove OK, front certainly felt "floatier" than before. OK, sez I, let's check the rears. Same thing, both down around the 100 mark. Put the other 2 CX ones in, testing around the 450 mark. So far so good.
When I put the suspension down to normal after doing the rears, the front refused to drop from full height. With no pressure in the system (height control on lowest, bleed valve open) the front still aimed for the sky. Driving it over a couple of gentle bumps failed to persuade it either.
Up in the air again, take off the covers and suss out the height corrector (HC). The only way I could get the front pressure down was to bleed the pressure from the front HC. I removed this and checked its flow through with compressed air and it seems OK. The three states of flow, up, down and hold correspond to the three positions of the shuttle. OK, put it back in and check it out. At this stage I decided to return to the best one of the D spheres and replaced the over 1000 psi CX sphere on spec. (Just in case this was causing trouble. Still tests OK on the tester however)
This time I have no front suspension pressure at all! Back rises and falls normally. The front steadfastly refuses to budge. I've bled the pressure through with the bleed valve on the pressure regulator, and I've cycled the lever up and down a few times. Still no height.
Now I'm sure I'm missing something basic and simple, but it's too damn hot to fiddle out there any more tonight, so I'm appealing to the Brains Trust.
A couple of questions if I may. Should I see much physical movement of the lever connecting to the HC? (The fork arrangement connected to the anti roll bar, and the control linkage, which moves the ball on the end.) This seems strangely static making me wonder if in fact the anti-roll bar is seized in some way.
Is there a more detailed way of bleeding the suspension after draining it like I have? There was a sound of rushing air through the HC once I closed the bleed valve and the pump came on load.
Hope someone can supply some info. Or maybe wave a magic wand and fix it remotely?
Cheers, Pottsy