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My tanks were all galvanized steel. I have welded a lot of cleaned tanks with no problem, but there is always a risk factor. My method is to have an air hose in the tank blowing in a good amount of air as I weld. This prevents there being enough concentration of fumes at any one time to be a...

Air shift works like part time 4WD in a civilian truck. When you engage by moving the air shift lever, an air cylinder on the transfer locks in the drive clutch to the front axle. This is the same thing you do when you pull your transfer lever on your part time 4WD into lock. The non-air shifts...

If you have the original transmission and transfer case in the truck, the trans is a 727 series with the small block "A" engine series (318) bell housing design. You can switch the original trans internals into a true big block ("B" and "RB") engine series (383, 413, 440) 727 trans housing and...

I should have mentioned that there are also voltage drop boxes available that drop from 24 to 12 volts. I know Caterpillar dealers have them, and possibly NAPA or heavy truck parts dealers. Regards Marti

On my M135, I ran a wire off one battery to a junction block inside the cab. That gives 12 volts. I took the large coil wound resistor out of the distributor, connected the distributor input wire to the appropriate side of the coil, ran a wire from my 12v junction block to a key switch in the...

I see the lights frequently on EBay, and there is always a selection of shackles there, too. I search under "military truck" and "shackle". You will see a lot of weird stuff in the shackle search, but I have not foiund a way to limit it down, so I just live with it and sort through.

I took a look at the specifications for Shell Rotella T 15/40. The current diesel oil spec is "Cl-4". Look for this and "SJ"on any oil you use in a diesel. Shell 15/40 is rated "Cl-4Plus, Cl-4, CH-4, CG-4, CF-4, CF/SJ, SL. It lists heavy truck mfg. requirements met, farm equipment mfg...

We have run JetA in our military trucks, 1155 Massey with a 540 Perkins Diesel, and my Cummins Dodge. I, too, had access to sumped fuel as a pilot at the local airport, but good old EPA has now decided that here at least they have to dispose of it in their approved and more expensive way. I...

I think you will find approximately 150 degrees reading difference checking temp post-turbo. I have done it that way, I agree it is not the best way, but several guys have had horror stories of the probe end breaking off and destroying the turbo drive end vanes when it was before the turbo.

We have found that with the way the torque arms are set up, pulling an axle on the front rear axle works better than pulling one on the rear rear axle. If it is the front one driving, it tends to lift and traction is lost. If the rear axle is driving, it seems to set into the road better under...

You might check with your auto parts store like NAPA. There is a little plug made you can insert into the oil hole in the crank journal with a small tab sticking up that rotates out the upper bearing half as you rotate the crank. It will also put in the new one in the same manner. Just be sure...

Interesting information about the oil. Thank you Bjorn for taking the time to present the information that is hard to find anywhere else. Multi grade oils have changed a lot in recent years. Interesting also that the engine in my son's M35A2, my M543A2 wrecker miltifuel engine, my dump truck...

If you got crud out of the cooling system, I would recommend checking the tranny cooler if you haven't already. Looking at the front of the cast iron tranny oil pan you will see a bolted on oval cover. Remove it when the system is drained and wash out the cavity. You will see plugs marked oil...

The power divider on a civilian tandem axle truck is an integral part of the front differential. If you have one, it will be obvious as a large extra casting on the front diff. It does not disconnect one of the axles, but has its own differential in it that allows one of the rear axles to turn...

Dennis: I have Echlin part numbers: Points CS777A Condensor RR175 NAPA should be able to cross. The rotor I never had to replace. It is special, and I doubt NAPA can get it. I recommend a military truck parts dealer of your choice. You might try the site sponsor. I have not yet had the...

Hook one line up to a vacuum source on the carb, the other to the intake air pipe and you are good. This will draw air through the distributor. They serve to keep the distributor dry. On my M37, I put the end of one next to the exhaust manifold so it sucked in warm air.

Dennis: I will look this weekend. I have it recorded, but have to look for the info.

It is my understanding the T meant turbocharged where the turbo was added to clean up smoke, not necessarily build more power. The S meant supercharged, not used in the real sense, but to indicate boosted charging with the turbo, which is the whistler, resulting in power increase. We first put a...

I think something to remember when driving these trucks is that there is no aneroid on the pump. To briefly explain, the aneroid, like on farm tractors, my Dodge Cummins, and other applications, is a valve that senses trubo boost and does not allow full fuel delivery until boost reaches a preset...

Here in Indiana I have plated my M543A2 wrecker as historic with no problems driving it around to use it as intended, and we plate our deuces and 5 ton cargoes as farm trucks (you have to own a farm), which is half the price of commercial plates. We go that way with them because we haul with...