Valve Block

Valve Block

Rang the suppliers of Arnott, he is saying its a leak from the valve block, O ring possibly? the o/s/f is not going up as it should, its taking forever, but holds air for a few days, no leak in the back itself or where the pipe attaches to it, dont know what to do now!! gona do a search on how to fix it, have a spare block so might just try and do a swap???

It's either bag,pipe into bag , pipe itself or pipe into v/ block raise to highest ans check with spray form soapy water just concentrate on the pipe and side that droops . He is Psychic if he can tell you its not the bag

the hole on the bottom left should that have O washers in it as well?


dam where do the rest go, including the black ones in the bag!!!!

That's the exhuast filter exit isn't it I can not see the Diaphragm in your oring kit

All well and good having a spare but pointless changing it untill you find the leak .

Dopey said:

the hole on the bottom left should that have O washers in it as well?

dam where do the rest go, including the black ones in the bag!!!!

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Why have you put an O ring in the exhaust silencer port. Look at this.
EAS Valve Block Rebuild Guide PaulP38A.com
Very thin black ones are for solenoid shafts. You will have to strip solenoids down and push shafts out to find them. If unsure strip one at a time and put it back together before doing next one.

exhaust port is 9? will take them out, this is a spear block I am doing this to, so was copying what was in it already, will take them out, thanks

Got the old block out, the rings on the new one was missing and no Colette on it, so put 2 new O rings in and swapped the Colette on it, not going to change the valve O rings, dont see the point (more for me to mess up)

If you have Arnott Gen II's, it is possible to have a leak on a new bag, usually it's around the crimp on the bottom of the bag. Hard to detect and prove. I took the bag off the car, made a frame to support it and gently pressurised it to 20 psi, I then put the whole lot in a bucket of water. A very small trace of bubbles could be seen. After a bit of argy bargy, the supplier changed it under the Arnott life time warranty, all has been fine since so I'm happy with Arnott.

Thanks m8, I will finish this stuff off 2morrow (too dark now) and if no joy, will take the pipe off replace it, and if its still not working I will take the bag off and do the same as you, all that said, it was all fine before I put the bag on, and immediately after the Arnott bag I have this problem

Dopey said:

Thanks m8, I will finish this stuff off 2morrow (too dark now) and if no joy, will take the pipe off replace it, and if its still not working I will take the bag off and do the same as you, all that said, it was all fine before I put the bag on, and immediately after the Arnott bag I have this problem

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Have you checked for leaks where the pipe goes into the bag? Has been known for one of the two O rings to be missing.

Datatek said:

Have you checked for leaks where the pipe goes into the bag? Has been known for one of the two O rings to be missing.

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There are only a couple of places a valve block can leak to cause a corner to drop. Bet it's the pipe connections. Either on block or bag.

The connection on the bag I dont suspect its that, I put sealer on it, so it shouldn't be that at all, but im going to have trouble pulling the tube out now!!

If the EAS timer is out and that corner is dropping then it must be between valve-block solenoid and bag. Front right is the lower hole at the front of the block of 4 holes on the valve-block.

You can get an air valve and bit of airline (or valve and straight connector if you've glued yours in) from a well known auction site for a few quid and then you can put it in the bag and inflate with a compressor (somewhere between 50 and 60psi should do it) and then see if it still drops. If it doesn't, must be the valve block, probably the ring on the solenoid. See the pdf link earlier and Wammers How To. Make sure the connector doesn't leak though. Most are pretty unreliable.

J

Dopey said:

The connection on the bag I dont suspect its that, I put sealer on it, so it shouldn't be that at all, but im going to have trouble pulling the tube out now!!

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At the most a little smear of silicone grease, sealer is not needed. What do you think the bloody O Rings are for? Gumming them up with sealer is not a very bright idea.

Desperation, maybe? After fiddling for a week or two I can understand how you might be driven to it!

Grrrrrr said:

Desperation, maybe? After fiddling for a week or two I can understand how you might be driven to it!

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O rings are the simplest and most efficient seal ever invented. The pressure of the fluid or air they retain pushes them tight against their sealing surfaces. Only with age do they lose their flexibility and leak. On this application providing the pipe is clean and free from abrasion, a smear of silicon grease is all that is needed. Then after system is inflated, a further push to properly locate them should see them leak free for years.

I put the stuff in where the pipe goes in to the Colette and the bag, not the block, as I went around checking the bag first and found no hole in it, and yeas it was out of frustration, just to see if it was leaking from there, if it had stopped then I would have taken it off and fixed it, I had a extra tube and connectors all ready to fix it

When I pulled the pipes from the block they all seemed to be holding air in them (obviously the hiss of the air coming from them as I detached them)

Putting the new block on 2morrow anyway, so I will know if its ok and its the solenoid or not

Dopey said:

I put the stuff in where the pipe goes in to the Colette and the bag, not the block, as I went around checking the bag first and found no hole in it, and yeas it was out of frustration, just to see if it was leaking from there, if it had stopped then I would have taken it off and fixed it, I had a extra tube and connectors all ready to fix it

When I pulled the pipes from the block they all seemed to be holding air in them (obviously the hiss of the air coming from them as I detached them)

Putting the new block on 2morrow anyway, so I will know if its ok and its the solenoid or not

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Doesn't matter where you put it, it is not required. If you have a corner dropping it is either the bag, the connection to it, the pipe itself, the connection to the valve block, the small O ring at the bottom of the solenoid base or the seal on the end of the solenoid shaft. It can't leak anywhere else to drop a corner.

Dont spank me too hard....

Dopey said:

Dont spank me too hard....

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Not spanking mate, but there is a logical sequence to follow, if you don't follow it, you will be chasing your tail for ever.