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In an earlier life I had a Caterpillar Model 12 motor grader that had been built for the Corps of Engineers in 1957. It has a Model 318 Cat diesel engine with a pony motor starter, 24 volt electricals. and an enclosed cab. It is believed it spent some time in Ft. Devens, MA at which time the...

Macks will pull harder than a Continental and out run a NH250 Cummins. Naturally the military got rid of them first.

Replacing a shear pin on an A@ when the truck is stuck in mud up to the headlights is always a character building experience. Hope you brought a spare pin, a punch and a machinist's hammer too.

The applicable Federal Vehicle Safety Standard calls for working brakes on any trailer RATED for over 3000#. That is not curb weight. That is why the Army is putting surge brakes on the newer 3/4 ton trailers. Most states have adopted the federal standards by reference to keep the highway trust...

Don't make a move without the pubs: 9-2320-209-10,20, & LO. These are available on the site and elsewhere for downloading or in paper. They are the operator's manual, organizational maintenance manual and lubrication order respectively. If you can get a 20P which is the organizational parts...

The people that swapped out transfer cases all the time had a jig or saddle on their jack to steady the case in an upright position to take it in or out of the truck as the flat side of the t case is not the bottom.

An accessory used to be sold for Mack trucks to lock the steering wheel which consisted of a tee shaped bar that fitted into one of the u joints in the steering column and was held in place by a padlock which immobilized the steering.

All 3 of the should fit on a 48' step deck or landoll trailer. Carrier needs to know if you have a loading dock or does the load have to b handled from the ground and if the vehicles do or do not run.

Reference post 18: the air cleaner used was not completely consistent between Mack and Continental engines. If one was damaged in the field whatever the parts man had would be put on the truck. The Army had kits to convert gas engine trucks to either Continental or Mack engines which would...

Reference post 9514 and alternator bolts: the little dears have to be checked for tightness periodically as they have the ability to vibrate loose when driving. One falls out, the other breaks, alternator falls off which kills the water pump and there you are.

Reference post 3: the vise is also missing. That's what the plate on the right side of the truck behind the bumper is for. I bought a vise once and a M 816 came with it. Download the operator's manual, organizational maintenance manual, parts book and lubrication order. There is a plate on the...

What kind license plate are you going to get you have commercial plates most places will you get a CD with an airbrake endorsement. If it farm use, RV or historic vehicle probably not. Find on paper or on line the operator's manual, organizational manual, parts book, and lubrication order for...

Reference post 15: a M51 is gas, a M51A1 is the ENDT673 Mack, the M51A2 has the multifuel engine. Same suffixes for the cargo trucks and tractors. Depending on the engine, a direct drive or overdrive transmission would be furnished, otherwise they are identical except for parts that hook up to...

Did the fire department scrap the original spare tire carrier that mounted to the frame between the tool box and intermediate axle ? It is much kinder to the back than a mount in the cargo body ala M54/813. Did the fire department ever go near this thing with a grease gun ? Some of them are...

Wipers not working ? See if you can get some air tool oil as used in impact wrenches into them to free them up. [parking brake inop ? If the shoes are not completely wasted you can take up the slack at the transfer case end of the brake cable by loosening the jam nut and taking up on the "acorn"...

If you getting a spare make sure you have 2ea right front lug nuts to secure it in the carrier. I bought a used M35A2 for which the PO had obtained a spare. Then he got some hardware store nuts to secure it to the carrier. The threads matched but it required a smaller wrench to turn them. If you...

Also by reading the reading you will find out where the transmission dip stick is hidden on the original trucks, a thing many military operators did not know when the trucks were new. Or what the air brake emergency release valve on the right side of the dashboard does which many people who...

Reference post 30 and transmission fluid. Get the applicable lubrication order (along with an operators manual, organizational maintenance manual and parts book) and read it carefully. Some LOs authorize either Dextron or 10 weight oil (OE10) for the transmission but only one or the other. No...

Post 10: add M915 which also have a 48" fifth wheel instead of 60" like a M818 etc.

I only remember 1ea M35A2 going up on GP recently. It was without winch and described as nonoperational. This could mean anything from a dead battery (likely) to a rod through the block. And they got $7k for it. No title. go to MV with SF 97 and struggle. Guy in post 6 has one that runs and is...