What pressure is P38 air suspension?

Hi, I have a P38 Range Rover I have fitted 2 new airbags and the car will not rise. The compressor runs and all lights are flashing correctly but I can hold my finger over the compressor when its running. Does anyone know what the pressure should be?

Thanks Neil

its about 120 PSI ish. best way to test the compressor is leave the car running with a door open, it should stop after a few minutes when the tank is full.

hi thanks for that info if its 120 psi i should not be able to hold my thumb should i ? so i think my compresor seal must be u/s has anyboddy ever fitted a new seal do thay work ! thanks neil

Did this job at the weekend, a piece of cake. I was going to produce a most excellent, well photographed and well written write up on the job - and then I found this from Rover Renovations
Make sure you use a good quality non-ball end allan (hex) key for the grub screw on the counter weight, it is quite tight.

In answer to your question, yes it does work, as long as the rest of the pump is OK.

I've replaced the seals on the compressors on both my P38's and have recently done 2 for friends as well. Experience tells me it is not worth sodding about with the 'seal kit' with just the ptfe(?) seal - best to buy the kit with the whole arm and the pot or cylinder as well. 2 of those I have done have had quite badly scored pots so you are only fixing half the job with just the seal. In addition, the seal is a complete barsteward to get on and you'll probably bust it anyway. From memory the guys in Sheppey, Kent, Island 4x4 are about the cheapest for the kit.

The first time you do one, it'll take you about an hour from start to finish - including giving the little reed valves inside the compressor a bit of a clean up too. Careful with their 'O' rings unless you have bought replacements for those too - I've not had to replace those yet on the ones I've done and all the vehicles done have been in the 100 - 140,000 mile range.

Good luck!

Best

Simon