Recent content by Evil Dr. Porkchop

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Military flatbed equipment trailer with 22ft by 8ft deck. Has 8K oil bath axles. 16k gvw. Pintle hitch. Has a flat four plug right now and 12v bulbs . It has air over hydraulic brakes, and needs a new master cylinder (looks the same as on an m105). The frame looks to be galvanized and all the...

I have one just like it kicking around here, it had a 14.00x20 NDCC on it. As far as I know they were used on artillery and maybe as a non combat wheel alternative for the m41 5 ton which came with 14.00x20 tires singled out on the rears. Years ago I found some pictures online of an m543...

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The topmost pipe is larger than the rest of the rack. That one measures at 3.5" outside diameter. The rest of the pipe measures approximately 2.875" outside diameter. 2.5" and 3" SCH 40 pipe should match the outside diameters perfectly. I know it's not how your diagram is set up but I measured...

I can do that.

We ended up selling this trailer last year. I believe there's another of the same model stored outside in the trainyard at the National Museum of Transportation in St. Louis.

The m816 has good power steering from the factory so no issue there. Another way to add air brakes is swap out the axles for ones from an m939 series truck. They bolt right in, and if you don't mind spending some more money you could try to find a USMC truck with Detroit Lockers in the rears...

Some more pictures:

I recently picked up one of these trailers and was curious to see if anyone else on the board had one or had any information about them. Also looking for a technical manual if one exists. I've seen a handful of these surplused through different sites, but I'm not sure if it was a big...

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Heat from underneath then hitting at the corner with a block of wood has worked for me in the past. They definitely can be a pain when they’ve been there forever.

M116a2 was probably the most common for that.

Another common vise on the later wreckers is the Yost 33C. Here’s a pic of one on an m936a2 at the Weare, NH show. Just for fun here’s an inservice pic of a vise that’s not quite by the book. This is most likely a m543, with a Wilton C3 mounted. The C3 has 6” jaws, but is much larger than...

Here’s some info on other wrecker vises. The spec calls for a 5” combination vise (regular and pipe jaws). A number of vises meet the spec, but have different bolt patterns for the base. The NSN, at least for the common 5 ton wreckers from m62 to m939 series is 5120-00-243-9072. The Wilton...