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There are several folks here that sell the MRAP dryer that retrofits nicely in the M939 trucks.

Yeah you have one, like he said it just looks different. It's in the same position as mine is in those pics.

Mine is a A2, and it's right where he said. You can actually see it from outside the truck, passenger side. Look over the back of the rear tool box at the front of the rear tank. pic inbound

I got mine from the local big truck parts store, Dixie Auto. I got the number from here on SS can't remember where. Maybe in the parts sticky at the top of this section.

I had a ppv stick on my way back from the Denton rally, the symptoms were I lost all my secondary air functions. I.e. wipers, horn and CTIS. Air pressure was still correct and building correctly. It was raining at the time and my wipers just quit suddenly.

With full pressure shut the engine down and then disengage the p-brake. Then check for any leaks under the truck. Like the cans or relay valves, expecially the circuit that don't have air pressure until the p-brake is disengaged

We use a really nice M915 or M916 A3 just for pulling trash trailers in and out of the transfer station. A real shame the truck is like new only 5k on the odometer. They may have been doing the same? Or hauling a excavator? We're fixing to get one this year.

Alot do the same to re-prime and test the M939 fuel system. We'll have to see if we can get a spare cap. So I take it this is a mechanical system. Peter how much fuel has been added to the tank?

Peter I have a bore cam of it comes to needing to scope the tank. And if it has somewhere to hook up a fuel pressure guage I have one also. Does this platform have a mechanical pump on the engine or a electric one in the tank?

Several members here have the retro fit dryer for sale

Hey Peter! Subscribed!

Stopped by his shop today and bled his brakes today. The bled fine with normal flow and pressue at the bleeders. So problems solved.

Pic???

So we have good news, my friend picked up his second new master cylinder today. He installed it and bled the master cylinder with the tubes shown earlier in the thread. He said it might have taken 5 pumps and both sides were purged! He hooked the brake lines up and said it resolved all the...

"Also getting oil out the hot side of the turbo." Pics???

Man that hood work looks great!

Just a shot in the dark but I would check the boost pressure in the intake manifold. The oil out of the hot side of the turbo, is it coming from the shaft seal or just blowing out with the exhaust?

The closest one will be there Monday, it was to late to have it today, and their truck doesn't run on Saturday. The guy that owns the truck, it's at his place of buisness and is not open on Monday. He's lurking here, maybe he'll sign up and say hi.

No' unfortunately this was a new unit.