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Google: 3930-01-053-4824 and download the manuals from “liberatedmanuals”.

Yes. Do a search within the FMTV forum for “hinge test” or “hinging test”.

Don’t even leave until you have checked the driveshafts for spline wear. And if ok, check the tightness of the compressor, water pump and alternator bolts every fuel stop. Also check the fan hub for rubber deterioration.

Can you post a picture of the data plate? There are different versions of that RT forklift.

My advice to you is find a small weld shop that is very convenient to you and let him take a look at it. Fixing these paper thin frames is a simple matter of cutting out rust holes and making patch pieces and welding them in with a wire feed welder.

I would verify the calipers are free to slide on the mounts and I would disassemble the piston and verify nothing is binding. But I would also wait to see if anyone else chimes in on your thread.

My best guess after thinking about this for quite a while is the smoking gun is the calipers. Either the piston is binding randomly or the caliper is binding such that it can't slide and only one pad is allowed to apply.

Is the skidding tire on the front or rear axle. What are the caliper pistons made of. Heat could cause them to seize in the bores. Are the calipers free to slide easily.

Scorpion looks pretty decent.

Is the pump actually pumping? It makes a “cathunka cathunka” sound.

So glad I was wrong and we have learned something new about turbocharged trucks and rain.

Need more info on what you plan to do. Most of the time the GP folks will push your truck onto your conveyance. When my "won't start" LMTV from Bragg got here on the drop deck, two hot batteries and she fired right up. Yours might be out of fuel or plenty of other issues.

Post # 2: https://www.steelsoldiers.com/threads/need-help-troubleshooting-an-issue-with-my-wtecii.196869/#post-2297130

Agree with above. HOWEVER, before you blow up a new or repaired controller, make sure you ohm out all the circuits. Follow the Allison manual on how to do this.

I have run into that situation before. When you try to sandblast the rust out, the sand just packs in there and the rust doesn't get abraded away. What I did was beat on the frame with a sledge hammer which tends to pulverize the rust, so you can blow it out. Then I sandblasted with fine sand...

Kinda thought they were the same

GMC's with automatic are typically the M135 Cargo with single tires and M211 Cargo with duals. Again advanced age of 69 years old needs everything gone through.

Air compressor. See how your truck still has the platform behind the running board. The air compressor was stupid heavy.

Nice truck actually. Fishplated frame means shop van or air compressor was on back.

5. Some clown at Prestolite stamped it wrong after a long weekend of drinking