Electric Winch Install

Has anyone tried installing an electric winch on their 939 series truck? For those of us without a winch, it may be a much more cost effective option with much less work. Warn offers a 24 volt unit with 18,000 rated line pull. I've seen this winch for sale for under $2,000. Most of the military hydraulic units people are selling are asking in that price range. I think the electric would be very simple to install. The worst part would be mounting the unit, but I don't think that would be too bad.

Please post pictures if you have done something like this.

Pictures??? Please post.

http://www.steelsoldiers.com/showthread.php?81832-M43b1/page3 - almost last pic - save it to your desktop and blow it up. There are better ones - but I am suppose to be working now.

For the same price, a pto winch will run ALL DAY LONG, the electric will run 10min at a time(with a 40min cool down period).

Gimp, you are so optimistic...10 minutes at load would be a real stretch..

I like the idea of the stock winch but it adds almost 2 feet to the truck and the in-cab control is huge. I was going to get a second front bumper and flip it bolt it up and put the winch behind it with the cable coming out the center hole.

Id love to go the electric route because its so simple. But I dont think 18,000 pounds is enough. A snatch block to double the pulling strength would be a necessity, and if you run into a situation where you need the entire length of your winch line and not half, you may be screwed.

I have 2 trucks so if I get stuck I can go get the other one to pull me out. If you are pulling someone else out you can use chain or tow line to the shackles and drive. You could call aaa and tell them to send a big truck.

FireFighterHill said:

Id love to go the electric route because its so simple. But I dont think 18,000 pounds is enough. A snatch block to double the pulling strength would be a necessity, and if you run into a situation where you need the entire length of your winch line and not half, you may be screwed.

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I take it the 5-Ton PTO/Hydraulic winch is rated for more then 10,000 then as opposed to the Deuce Winch??

I believe it is 20k

Hmm I wonder if that would fit on a Deuce <.<

I thought it was alot more then 20k, the truck alone weighs over 20k.

FireFighterHill said:

I thought it was alot more then 20k, the truck alone weighs over 20k.

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Well a Deuce weights more then 10,000 does it not?

The first time you bury your 5 ton to the pumpkins and you are counting on the Warn 18,000 to suck you out, even with a snatch block, you are going to be very disappointed. Ask any MRAP driver over in 'Stan.

You better find something pretty strong to anchor your winch to if you want to pull out 21k of steel buried tire deep in mud. When that line let's go because you ripped out the tree you were hooked around you better be out of the way. Don't think you are gonna hook onto another truck you would probably just end up dragging them into your mess. When a 5 ton gets stuck deep its hard to get it unstuck. Look on youtube there are plenty of vids military having to use tanks and such to get stuck trucks out of sand mud is way worse.

I have the danish army wreckers guide sitting in front of me right now. If someone wants me to I can whip a little number for how much pulling effort would be required to "unstick" a 5ton buried in mud

I was thinking more along the lines of install simplicity. Many good points made here. Thanks all!

M936, M936A1, M936A2 has a 45,000 pound rear winch. All other models has a 20,000 winch on the front according to the 5-ton TM.

All the numbers I us come from the 5-Ton TM. For this "experiment" I am using the M931A2 and the M936 as the 2 example trucks as they are the lightest and heaviest according to the TM.

The outlines for this calculation:
Both trucks are stuck in deep mud, the effort required will be listed with 2 numbers; the pulling effort required at a flat recovery, and the effort required if trying to recover at a 45 degree angle. All numbers in lbs

M931A2
Base weight: 19,895 lbs

Rolling resistance, Deep mud: 19,895 * 0.66 = 13,130.7 lbs
Gradient Resistance (0°) = 2 * 19,895 * 0 / 100 = 0 lbs
Gradient Resistance (45°) = 2 * 19,895 * 45 / 100 = 17,905.5 lbs

Total Pulling Effort required (0°) = 13,130.7 lbs
Total Pulling Effort required (45°) = 31,036.2 lbs
(Rolling + Gradient Resistance)

M936
Base weight: 39,334 lbs

Rolling resistance, Deep mud: 39,334*0.66 = 25,960.44
Gradient Resistance (0°) = 2 * 39,334 * 0 / 100 = 0 lbs
Gradient Resistance (45°) = 2 * 39,334 * 45 / 100 = 35,400.6 lbs

Total Pulling Effort required (0°) = 25,960.44
Total Pulling Effort required (45°) = 61,361.04 lbs
(Rolling + Gradient Resistance)

So as you can see its not a tiny weight we are dealing with one way or the other. And one thing worth noting is that the numbers provided is the effort required. But that doesn't mean that your 20,000 lbs winch with a snatch-block can simply recover a stuck up to its axles in mud M931A2 up a 45° slope. Theoretically it can, BUT you would need to secure the recovering vehicle in such a way that its anchored weight is sufficient, otherwise all you would simply achieve is to pull the recovering vehicle towards the vehicle being recovered.

So there you have it