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1 -- max flat tow IS 100 miles 2 -- max flat tow speed IS 35 mph 3 -- if front lift tow, pull the rear axles 4 -- if rear lift tow, pull the front drive shaft 5 -- if flat tow over 100 miles, pull rear axles and front drive shaft The reason for all this is that the POS truck does NOT have a...

Either engine would be good, just a bit of fab work, will need a trick toque converter ( the 6.5 might be a bolt up), I would not worry about the front drive, ect., if you use the oe trans, the trans is based on a tricked up caddy trans, cast iron case. A 52 caddy weighed as much as the truck...

Zout, put a 109 box on a 923 (909), you would not know it is you did not know that there is not a 909 in the 939 series.

Are you SURE the fifth wheel is NOT off a 931/932, these 5th wheels are wider and use the angle iron , the 39/809 series (m52/m818, m819) used the same frame width 5th wheel.

In the back of the -20

In vn, we had some m52s with behind the cab winches, with telescoping gin polls that were used to self unload. The polls pined on to the rear lift brackets, the stays hooked into brackets in front of the winch. When not in use, the polls fit in brackets on each side of the frame, under the 5th...

The truck in pic. 11 has one heck of a long wheel base.

There is/was a A frame kit for the M series, watch out over weighting the front axle and springs.

As far as the front drive shaft goes, you can always put in as many U-joints as needed to get around what ever trans you are using, the designers of the 939 series had to use 1 U-joint to get around the Allison.

They are not that pricy, the clutch is a big jaw clutch, you could build up the jaws, then machine them down, BUT you need to find out WHY not full engagement. I have seen the shifting yolk bent from someone trying to force the clutch to engage when the jaws are not lined up.

The hydraulic DRIVE for the front winch on a 809/39 series truck WILL NOT clear the radiator, the 939 radiator is notched for the drive, one way to get around the radiator issue, is to run the mechanical drive but instead of a pto, mount the hydraulic motor to the frame, then drive the winch...

Can you get it to the rally, PLEASE

I WILL take it if joe does not. ALSO looking for a 939 foot brake treadle valve

You can drive in low/r. the reason that the military say NO, is that young GI only knows how to drive with the foot to the floor, he "thinks" that a little power moves the truck so MORE power will move it faster, so as soon as the the truck gets traction, with a lot of power, something breaks...

Call me, 703-389-6705, nothing is wrong, the sprag shifts into reverse when going into reverse, comes out of reverse into forward as SOON as you shift out of reverse.

But ONLY at the DIRECTION of the SOPO/SPONCO

yes

The point I was trying to make was ,people need to try to help themselves if they want us to help, READING the -10 is a must for self help, If someone does not have time to read the -10, then we do not have to offer a answer without a comment.

This IS WHY you SHOULD read the -10 BEFORE driving the truck, not after something happens

Those trans lines go to the transfer case for shifting the sprag.