Thread: P38 EAS valve block rebuild

I recon the EAS valve block rebuild is a right of passage which must be completed before you are fully affiliated to the cause.
Welcome to the Club.

Of course, it was all done up and ready to go back into the RR when I noticed a small spring on the table. Doh!

Hey, I do have a question about this. I didnt get a new diaphram with my rebuild kit but I am not sure how to tell if mine did need replacement. It was quite hard (as in not flexible or rubbery), but it did look in tact and had no tears or breaks in it.

If it needs to be soft like oring rubber to create a seal, then I think that mine is no good. Can someone describe a good one to me?

Glen - you're not the first person to forget to put that little spring back in... I've done it at least once (that I'll admit to)

This one eh?


What you look for in the old diaphragm is signs of wear and cracks in the rubber... disassembled view below... this one is ok


If you replace the original diaphragm with the orange one from Hard Range or Rover Renovations, you re-use the spring too.


I must update the Valve Block Refresh Guide at EAS Valve Block Renew PaulP38A.com with this info, plus some excellent feedback and pics from a recent customer.

Cheers, Paul.

Well, I am still having leaking problems. Car is down from full height overnight. The joins on the 6mm air hose look good under the soapy spray, so I sprayed the top of the solenoid covers when in operation, there were big angry bubbles from 2 of the top 5 solenoid covers.

So, either it was because I didnt replace the tiny tiny tiny orings internally on the solenoid switch plunger. I wil do that now. The other question I have is that 4 of the 5 top solenoids didnt have a squarish oring seal where the solenoid cover meets the valve block face. Is this right? See attached picture. I dont think I lost them, they werent there to begin with.

I cant see from Paul's rebuild pics if the solenoid covers (the ones that have two small black wires going into them) have the squarish shaped orings in them or not. Same problem with the RR.net rebuild web page pics.

Originally Posted by glenhendry

I cant see from Paul's rebuild pics if the solenoid covers (the ones that have two small black wires going into them) have the squarish shaped orings in them or not. Same problem with the RR.net rebuild web page pics.

yep, from memory only one has a rubber squarish seal... the Exhaust Valve I think.


Here's a good tip from a Hard Range customer (Peter, thanks) when replacing the o-rings on the stem seals.

When reassembling this part, hold the stem seal against the upper body as you locate it to the lower body as shown below. This will ensure this o ring stays seated whilst tightening the screws




Cheers
Paul.

Originally Posted by PaulP38a

yep, from memory only one has a rubber squarish seal... the Exhaust Valve I think.

Hi Paul,

It is the Diaphragm valve that one rubber squarish seal.

I consider to put one on all of them. Can't hurt.

Cheers

Florent