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Yes I am sure the truck in question was not a 5 ton. The truck had been surplused out and fallen into the possession of a lumber mill near Lebanon, PA. They had 2ea of these which and been made into knuckle boom trucks to handle logs in the mill yard. One still had the 903 Cummins in it. I...

If your PM is tight you will survive out on the big road. I put 40,000 miles into a M818 while serving in reserve components and got through that with a couple of sets of tires, 4 batteries, some light bulbs. oil and filter changes and lots of grease. When I retired it still had the same...

Adjusting brakes on a Dodge is not an insurmountable problem. Cab top over the driver's cab is a one man job: lay the top out on the hood upside down with the front facing the windshield. There is a bead on the leading edge of the top that fits into a channel on top of the windshield. From one...

Don't make a move without the pubs: operators' manual. organizational maintenance manual, parts book, and a lubrication order. All of which can be downloaded off this site so you can start reading them now. A M35A2 has over 40 grease points, 4 on the handbrake alone. Neglect them at your own...

Reference post 18: When first fielded 10 tons used a LeRoi V-8 gasoline engines. Later editions have a 903 cubic inch Cummins V-8 diesel. I have seen examples after being surplused out that had Mack ENDT 675 engines swapped in. They all had a Mack built TRD72X crash box transmission and a...

This is how you hauled your tanks and such back in the day.

The pubs in post 35 can be found ion the technical manuals section on this site.

Post 9 is the straight skinny. Don't make a move without the pubs: operators manual, organizational maintenance manual, parts book, and lubrication order. A deuce with a winch has something on the order of 45 grease points. Neglect them at your own peril. Don't forget the oil can points either...

The bodies shown on the semi-trailer appear to be similar if not identical to the bodies then in use by the Bell System on commercial 1/2 ton chassis up until 1961 when the Bell companies switched to the then new vans.

Comparison with TM for M915 reveals the following for differentials: + 32 degrees: GO 85/140 + 40 degrees to -10 degrees: GO 80/90 - 40 degrees: GO 75. Don't have a LO for a M939 so not sure what authorized lubricant for transfer case on this truck is.

Definitely a gas job. Haven't seen one for 30 years but I believe their is a hand priming feature on the fuel pump. Definitely have to flush the fuel system to get this to run. As built they have a 24v electric system with 2 6TA batteries mounted under the passenger's side of the cab.

The best kept and most closely guarded secret in the United States Army is its publication system. If you obtain TM 9-2320-260-LO and read it will list as the authorized lubricant for transfer cases, differentials and transmissions for the 809 series trucks as GO 80/90 down to 40 degrees...

It looks like some type of trailer body mounted on a heavily customized chassis.

Even the Army is not stupid enough to rebuilt 808s into 939s. What they did was order enough 939s for the high priority deployable units. Then push their 809s and any not issued from depot down on lower priority and reserve components which would then allow them to surplus off their M54A1 and 2s...

Check the LO for what is appropriate for your temperature range. GO 80/90 will likely be it.

look in the 10 manual under "fording plug."

Yea you can get it going that fast but will it stop when loaded without overworking the Army brakes ? That is the usual problem with modifying a M35A2 or a M37: it won't stop.

Also if any of this type work ever went on it would have been a long time ago, like early 1980s and any DOD civilian or military personnel involved have been retired for a very long time.

I seriously doubt any significant rebuilding of M 809 series trucks into M 939s occurred. Maybe one someplace to test the concept. Too many parts are different between the two to make it economic or easy to convert trucks already in the field from 809s tom 939s. I saw M809 trucks converted to...

My unit had some M52A1s with overdriven transmissions and on stock tires they would do 60 mph on flat ground. Ran faster than a M818 and pulled harder than a M52A2. Reference post 8: those compound Mack transmissions are too long to fit between the engine bell housing and the front of the...