Recent content by Frederic

Ok. I will see where this goes. Once again, thanks for the assistance.

I talked with Grigsby Truck Company and was able to get a phone number/contact info for Dana/Spicer. I have contacted and will hopefully talk with them as well. According to Walt at Grigsby, they tested the controller that I bought from them on a working PCU and it worked fine. Perhaps it is...

So I shutdown the vehicle after it started dumping again after the first deflate and it stopped. I disconnected the controller after and had the same result. So, seems like the controller is doing what it should, but the PCU is not as it starts deflating again/opening a dump valve again. Fix...

I checked data plate on the lower right of the dash and the NSN is 2320-01-354-3385. Am I looking in the correct spot?

Well, I started the vehicle, made sure that tires were aired up under HWY, 78 lbs. Initiated the deflate cycle in XC, brass relief valve released momentarily, let deflate for approximately 10 seconds or so, turned off vehicle. Deflate ceased. Did the same thing with disconnecting the CTIS...

Hello again Ronmar. I checked all dump valves for the mud dawbers. Nothing. I don't even think we have those here in WY. The brass relief valve coming off of the PCU seems to empty and then close just fine. Which air line is the vent line coming off of the PCU? Is there a solenoid inside...

Well heck! How do I figure out which variant? Built in 1997 apparently. Came with a green controller and purchased a brand new black controller. Thanks for your help.

Thanks so much for the ideas. I’ve been out of town, but I’ll check on your suggestions this week and keep you posted. I appreciate your help.

I need some CTIS help! My CTIS controller decided to up and die. Got a new one, black, programmed for higher tire pressures from Walt Grigsby Trucks out of Bend, OR. System keeps high pressure at HWY mode, about 76 lbs and fills up just fine. Here is the issue: When put into XC or Sand...

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