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Welcome to the Deuce club's M35A3 room! That is a nice truck! What's its serial number? I suspect the trucks built before 1998 had green Cat motors while the rest got yellow Cats (mine's a 1995). As for tire air leaks, I agree with checking the brass fittings first. When I did a tire swap...

Is there something in this setup that would keep the steering axle brakes from locking up if air is lost? Perhaps a diagram would help illustrate this.

I did a little bit of research this morning about this type of air-boosted MC. It doesn't seem to exist after all :( If I ever bought an old deuce with single-circuit brakes, I'd consider going with a separate electric pump that does either vacuum or hydraulics for brake boosting. The...

I understand now, thanks! And I also understand now why an emergency spring brake failsafe was discussed. The problem with that failsafe is that without somehow splitting the front hydraulic brakes from the rest of that part of the system, all the brakes would be slammed on air loss, creating...

I just discovered this thread thanks to @patracy linking it from his brake line failure thread. I think this is all really neat going into modern safety solutions for brake redundancy on the old trucks! Having read through the entire thread, there's one thing I'm not entirely clear about: Can...

Now that you've said that I want to do it :ROFLMAO:

The big trapezoidal plate bolted just in front of the middle axle is it? Looks like extends a ways towards the front of the truck:

Don't the wreckers and dumps have some kind of double frame construction? I've never compared frames and have no idea what that would look like.

A quick forum search says 1300-1500 lbs for a 12 ft bed.

It shouldn't be a problem. The seats go into the stake pockets and all the hardware is above the edge of the truck's bed.

Or the tach sensor isn't working right :p I was assuming it used a magnetic tach sensor like the A3 and not a mechanical cable linkage. The magnetic ones either wear out or need readjustment. Though I know nothing about ZF transmissions.

The AT1545 has a lock-up torque converter whereas the AT545 doesn't. The AT1545 only locks up in 3rd and 4th gear. The AT1545 was only installed in the M35A3 with no known civilian applications. Many from the skoolie crowd bought the surplus AT1545 transmissions to replace their AT545s to get...

That's the basic gist, but it involved pretty much a complete rebuild. The Army and AM General recycled the good sheet metal, axles, transfer cases, beds, and frames of many existing M35s and rebuilt M35A3s out of them, with some changes to modernize the trucks to supplement FMTV distribution...

Extended Service Program. The M35A3 and its variants were built in accordance with that program. There was a 5-ton ESP proposed too, but it never moved forward probably because it was redundant with the M939A2 which I believe was planned to be distributed shortly after the ESP was created.

I just learned from the seller that his M35E3C has air-assisted steering and a Cat 3116 in it.

I think that answer is confusing, unless I've always misunderstood rim sizes. I always thought they were nominal diameter by thickness. As for steering, I'm not sure. I've only ever driven super singles with air-assisted steering.

I don't think the gladhand is a good way to drain the air tanks because moisture is going to settle at the bottom of the tanks. Water won't be able to leave the tanks through the air system and through the glandhand, thus tank rot occurs. Draining at the tanks is the way to go. I've...

Those 20x8.5 wheels are MLVW wheels. I think they'll be too narrow for 395s or 365s. The M35A3 uses wider wheels, 20x11. I agree with going with the modern 395s. Make sure you get an assurance with the date codes on them though so you can better expect when they'll start dry cracking...

The lockup at the torque converter helps with fuel efficiency and eliminates fluid coupling lag. These surplus AT1545s were super-popular with the skoolie crowd because of that, mainly for the fuel efficiency improvement. It was also great that it could almost straight-up replace the common...

I'm always on the lookout for more information about the ESP and the projects that were related to it for both the deuces and the 5-tons. Today while skimming the Facebook Marketplace for military trucks, I found what a NJ seller calls an M35E3C. It was built in 1985, serial #0006. It's...