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Air building question


GlennWest

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Truck has not been run for a couple of months. All air pressure down. Started today, pulling out tomorrow. Built air but slowly. It is building air though. Changed purge valve during maiden trip. Do I have a problem or is this normal when setting up?

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Ok. Thanks. It doesn't build air as fast as I read it should. But it works. This is first time let set until all air leaked out. I considered changing the dryer filter but it looks new. Got to pull dryer to change govenor. Only reason not new one on there. Planning to relocate it.

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Two bolts, a couple o-rings, and undoing the air hoses and the whole dryer/governor assy comes off and goes on a bench in just a few minutes. It is probably worth a shot at trying it at home once so you can solve corrosion troubles and learn how the delivery check valve fits in the governor section before a roadside repair though.

 

The hope is that it is all moot as you won't have the troubles that under hood mounted governor guys have and you'll never have to change it but I guess a guy should be prepared.

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Underhood mount means more hoses/connections, places for moisture and crud to buildup. May be easier to service but brings its own headaches.

 

20yrs+ and several million kilometers I have never had a failed air governor strand me on the road...not saying I haven't had to replace a governor or three but it is not a super common issue but it is a super cheap and easy way to rule out problems with one part of your air system so it is the most "common" recommended first step in air system diagnosis.

 

I doubt that the air dryer needs to be removed from the truck to change out the governor but if it does it is an easy job if you have the tools (if I had to I would do it on the side of the road), I don't doubt it might be inconvenient to get at but it will be serviceable on the truck.

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Wait, holds 100 pounds overnite? I need your air guy. Mine won't hold pressure longer than 4 hours. I thought it was just cause California was sucking the air out of it because my wallet was empty!

The longer you hang around here, the better you'll see how particular some of these guys are about their trucks. There are some here that are in better shape than when they left the factory. Some hold air better than a submarine....

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