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I'm assuming if I find coolant in the air compressor uploader valve that the air compressor is cracked and needs to be replaced? Just checking before I spend the money and the time replacing it. I REALLY don't want to replace it. I guess this also explains why I was seeing green liquid...

The truck hasn't been building any air pressure so I checked the uploader valve and inside it was full of radiator fluid. I'm guessing the air compressor is cracked and must be replaced? I REALLY don't want to replace it, it doesn't look easy. This also explains why the wet tank has been...

Anyone know if the cabs for the MK48 and HEMTT are identical? I need to dig into the TM's more but thought maybe someone out there has replaced one. Thanks. Bryan

I've got a 1986 HEMTT. The temp is stable at 180 degrees unless I start driving. It jumps up to 240 degrees not long after moving and I hear a large rush of air from the center console. Within a few minutes after I put the vehicle in neutral the temp quickly comes back down to 180 degrees...

Saw a closed thread from back in 2007 that discussed HEMTT insurance. Now that a few more HEMTT's are in public hands I was wondering where, and what price, people have been finding insurance. The insurance on my M35 and M939's is very reasonable, the quotes I've gotten for the HEMTT are...

Replaced the fuel filter today on the HEMTT, now I need to bleed the air out. TM 9-2320-279-20-1, Section 2-18 discusses bleeding the air at the fuel filter housing with a priming pump. Is the TM talking about a hand primer pump similar to the one at the link below? I guess the pump is a...

Looking for someone in the Dallas/Ft Worth area who can install an under the hood A/C unit in my M923. These summer days are too hot too really enjoy my 5 ton. If it is a job you think you may be able to do please let me know. Thanks!! Bryan Steinborn

Has anyone else had this problem with the M939A1 water pump? I needed to replace the water pump. Numerous places sell the water pump. See the picture below for a view of the water pump. I noticed that this new pump appears to be different than the one shown in the TM, TM-9-2320-272-24-1...

I am replacing the water pump on the M923. I have the water pump and the o-ring but I can't find the gasket labeled number 13 in the Figure below (TM9-2320-272-24-4, chapter 3-6). I have searched for the PN 130226 and NSN 5330-00-106-6370 with no luck. I could always use the old gasket but...

I've been thinking of buying an M923 from a friend of mine. I already own a deuce. Then I came across this information, "The safety of the M939 series of trucks has been criticized, especially braking performance and stability when loaded. In 1999 the US Army began refitting anti-lock brake...

All the tail lights (brake, turn signal, etc.) worked on my old housings. Replaced the tail light housings with new ones because the faceplates were messed up. All the lights work EXCEPT the brake light. I noticed in the old housing that the bulb for the brake/signal is a 2 filament bulb but...

My M35A2 is a recent purchase. Tried driving the truck from CA to TX but the clutch plate went out in AZ. Replaced the clutch plate once it arrived in TX. Later one of the radiator hoses blew, I didn't know how old the radiator rubber hoses are so I replaced them all. Got to thinking I...

Thinking of installing the Jatonka fuel filters. I know people on this site recommend them. I noticed that the Jatonka secondary fuel filters do not have drain valves. Is this a problem? The Jatonka primary fuel filter has a drain valve incorporated into the filter, I guess this is adequate...

I have been thinking of replacing the front wiring harness. I recently replaced the fuel gauge and noticed that the wiring behind the console was a bit frayed. I can also reach my hand under the console while the engine is running, wiggle the wiring and watch the gauges bounce around. I've...

I've got an M35A2 that I picked up in CA and drove to TX back in September. The truck ran great and the temperature never went above 190 degrees. On a recent short drive I smelled antifreeze inside the cab and then noticed the antifreeze coming in along the drivers floor and on the left front...

I have an M35A2 that needs some clutch work done. Anyone know of a good place near the Fort Worth, TX area that could perform the work?