Sealco 110500 slow to set spring brakes

I couldn't find any kinked lines anywhere but I could try shop air to supply the valve and see what happens.

 

I took it apart earlier to make sure nothing was in there. It was all good. I'm not sure what the deal with it is. I might just get a new valve. I think this one was rebuilt by haldex. I typically have had good luck with their stuff but who knows. I think you can get brand new ones from sealco still instead of rebuilt ones. Like I said it ALMOST works. It is so close but not quite right. Thanks for the reply and ideas.

 

I took every piece out of it and cleaned it and lubed it earlier. Was hoping that would fix it. I might try one more time to lube it in the morning.

 

Yeah these valves are annoying as hell. Seem to simple to ever have an issue but I have had nothing but! This one has worked better than the previous ones so idk it is what it is for now. I can work with it easier than the last one that was just on it. I'm going to lube it up one more time and that's all the more time I'm going to dump into it. I already wasted an entire day on a 60 dollar piece. Mostly just annoyed at this point. All things kind of just seem to point to the valve doesn't work quite right.

 

I will try this as well when I get home. I think I know what the issue is and where the air is coming from. Someone put a T fitting in the red line at some point in time to run some air controls and go to a few air bags and I'm pretty sure that isn't factory. I believe all those things should feed from the air tank. I believe the back fed air is coming from that T fitting and partially keeping the parking circuit filled with air and it is back feeding out of the red glad hand from there. OR it could be that it is supposed to be there but the air control switch is leaking back and not keeping that side isolated from the parking circuit. I have a new air switch as well so I could test that. I'm not 100% sure how this trailer was from the factory. OR like you said it could be that the air is coming through the sealco quick release valve. So I will check all these out when I get home. It has to be one of those three situations. Then this situation should be DONE.