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Well I found the issue. After going thru every valve on the truck and finding nothing, I should have stuck to my gut. Some clown had the dash valves hooked up wrong. system works great now!

Thanks Will, this is a new truck. Suspecting something is hooked up wrong. I introduced a small amount of marvel mystery oil to the air system thru one of the hand valve connections, cycled stuff for awhile and accomplished nothing but a nice mess. With the park valve released (air dumping...

I pulled out the tractor protection valve and disassembled. Like the others, everything was clean amd new, seals plyable. It appears that the rear emergency gladhand just passes thru there? I didnt see any fuction of that valve relative to the gladhand circuit. any insight fellas?

Is the trailer park valve the only stop in the park release air? In other words, if I had the exhaust line pulled off the trailer valve, When I release the park valve, no air should be leaving the trailer valve dump? Or is there something else down stream? This really seems like a dumb question.

The yellow valve is the park valve. the red valve is the trailer valve, but no, it is not on. I wonder if someone had the valve out and put it back in wrong.. I hope not, those things suck to do.

1997 M1078. When the park brake release valve is pushed, the air continues to exhaust from the rear emergency gladhand. I have pulled the three valves apart behind the washer bottle, all three were good. The truck recently went thru a rebuild, so this wasnt surprising. I have looked thru...

FWIW, I have invested some time to find the CORRECT seals/wipers for the cab latch and put together an overhaul kit which is available for purchase. These latches are very simple, and they can be resealed without removing them from the truck. PM if interested, or see the ad in classifieds.

Above all else, I think you should go hook up to another truck and tow it around. I think youll find very quickly that it isnt a super fun time. Another thought, have you driven your truck offroad? the trucks do well for what they are, but they will not go most places a stock pickup truck...

Yes, repairs are expensive. Yes repairs are more expensive than your 2003 F150. yes, they can be driven and used every day- if you dont mind driving a 17,000 lb pickup around. They get terrible mileage for a pickup, on par for other trucks of this size. Are they practical... is anything practical?

I just learned quite a lot reading this thread. Thanks for making an effort here Phasty.

Welcome to wa! Where are you stationed?

any word on finding your seals? i am ready to drive into the hydraulic shop and see what they can do.

www.JourneyOffroad.com :)

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Curious about the two different turbos. How did you come across this info? OWuld make sense why my 225hp truck with a 290hp turbo is so laggy. Time to turn up the fuel! Also, Im curious to see the flow map on your magestic turbo. Cant wrap my head around a turbo that flows enough air to support...

Subscribed! Keep us informed man!

My 1996 1078 working hard

X2 on Goode towing. those folks are just awesome to work with. I couldnt think more highly of them.

I dont know what that first meritor number is. im attaching a photo of the id tag from the mrap third member. this third member isnt unique to the military. There are several meritor housings that use this carrier, and as such, different ratios can be had at the parts haus level- if you are...