05 int cummins ISX 400 leaking air

from what I can find this part may be the Turbocharger control shutoff valve filter...
and is leaking air from a small round diaphragm or pressure relief valve on top, see the yellow arrow in the pic.
this seemed to start leaking when I noticed a piece of hose leaking from the egr mixer to the compressor, was blowing a lot of air and my compressor had to keep cycling on to keep the psi up. I fixed that and noticed the small diaphragm leaking as well.

I guess the question is. can I remove that Turbocharger control shutoff valve filter and clean it to fix it, or would I need a new one?
and anything I should be aware of when removing it?

any help is greatly appreciated.

Buster[/QUOTE]

 

I think there was a thread about somewhere here. I believe the turbo shutoff control solenoid is not serviceable, and rather expensive to replace, but I think someone here did actually take one apart and successfully clean it.

 

I know the part you are talking about, I think that is like a first revision or something. The one you have is what we see all the time. In Canada here I think they price about $1100! I don't know why they are so expensive, probably supply/demand thing. Give me your engine serial number, and I will see if that control valve breaks down with a service kit or something.

 

Engine must be actually running, ECM will energize this valve to send air to the turbo. I think with no air the turbo is partially closed and will not allow max boost, or be very slow to build. I can't remember exactly, but I do know when the engine sees it isn't developing the proper boost for given operating conditions it will derate to protect itself. Either way I don't recommend to run with it either propped open or closed. I just see the valve in the parts break-down, no rebuild kits or separate internal parts. Yes, just two bolts, your wiring connector and the air lines to take this off. Here are the compatible part numbers, 4037440, 4039813, 4046304, 2836554 and 3770742. The first number is original to your engine, the last number is the latest parts revision. The other numbers are other variations where they just used different body materials for whatever reason. I searched a bit. I don't see any aftermarket rebuild kits, just the whole unit. Retailing around $1000. There some used on Ebay for about half of that. Try to search those numbers, someone out there may have one cheap. Try salvage yards too. Hope this helps!