M1031 down. Need a part.

[ecostruction]

M1031 down. Need More Help...

My 1031 is down. The cone on the back of the transmission, where the front of the driveshaft goes in, broke. See pic. Anyone know where I can find one? Been looking for months. I use this truck for work, well my guys do, and we need it up an running.

Many thanks in advance.

 

[doghead]

When you say transmission, do you really mean the transfer case?

Have you placed a wanted ad in the classifieds yet?

We have a few members not to far from you that regularly sell cucv parts.

 

[ecostruction]

Hmm, its whatever the driveshaft goes into. My guys took it apart, so I didn't have a chance to study it. I am going to put an ad in the classifieds. I had heard there were guys with CUCV parts close by, but haven't found them. Thanks for the response.

 

[porkysplace]

Hmm, its whatever the driveshaft goes into. My guys took it apart, so I didn't have a chance to study it. I am going to put an ad in the classifieds. I had heard there were guys with CUCV parts close by, but haven't found them. Thanks for the response.

It would probably be a good idea to look the part number up in the parts TM and include that in the ad along with the transfer case model number ( my guess would be NP 205 because of the pto )

search Hillbillywizzard in the vendors forum for cucv parts.

 

[doghead]

Most times, a Google search of the part number finds sources you would have never thought of.

 

[doghead]

There is a reason it failed. That needs to be addressed also.

Was it forklifted? Is the driveshaft bent?

 

[doghead]

Here is the OP's wanted ad. http://www.steelsoldiers.com/showthread.php?138071-M1031-part-needed

Please reply to it for offers of parts.

 

[ecostruction]

The driveshaft was bent really bad. So I had one built from an old one I had before recovery. Installed at GL lot and loaded on trailer. I'm hoping it was the result of being forklifted and not something to do with the driveshaft. The U joints were stiff when I retrieved the "new" driveshaft. I'll look for a part number. Thanks DH.

 

[dependable]

The transfer case was probably cracked when the driveshaft got bent. Seen this before.

 

[Skinny]

If I was in your position, I would convert the NP205 to a fixed yoke output and have the driveshaft refitted.

 

[ecostruction]

I have the part from a member here. Thanks to them very much. Next problem. It would seem to me that with the rear driveshaft removed, and the transfer case in 4wdH, I should be able to move the truck correct? But I can't. It doesn't seem that the tail housing, in the photos above, seal around the slip joint. Or at least enough to hold in trans fluid. That being said, there was very little, if any, trans fluid on the stick. My thinking is that the tranny is out of fluid and that there is nothing in the TC. If no oil, then no go correct? Of course the next question would be "why" if the tail housing doesn't hold in the fluid. Thoughts?

 

[porkysplace]

There is a seal between the transmission and transfer case , if that fails it will fill the transfer case with the transmission fluid. The dipstick is to check the transmission fluid , there is a plug in the transfer case to check and fill the fluid there . You could have lost all fluid in both when that broke .
Did you just replace the cover or inspect the transfer case for further damage that caused the damage like bad bearings ect. . Did you follow replacement and torque procedures outlined in the TM ?

 

[ecostruction]

I didn't reassemble yet. I will inspect before I do. But shouldn't the truck be able to move if the transfer case is in 4wd? and if there isn't any fluid it in, it won't move? Am I correct in my thinking?

 

[porkysplace]

I didn't reassemble yet. I will inspect before I do. But shouldn't the truck be able to move if the transfer case is in 4wd? and if there isn't any fluid it in, it won't move ?, i Am I correct in my thinking?

But shouldn't the truck be able to move if the transfer case is in 4wd? Not with it disassembled
and if there isn't any fluid it in, it won't move ? the transmission needs to be full for the truck to move , the transfer case can be empty it will move a short distance but cause damage.

 

[ecostruction]

Got everything back together and the truck moves again. However, look at the picture below. It appears that the driveshaft is way to short. Perhaps that is the problem and why the tail housing cracked. Seems like it should go on a lot farther than that. This is a new shaft I had built, but they used a shaft from a 1008 that I had that was bent for the ends. Measurement would have come from that truck. Didn't think the 1008 and 1031 would have different shaft lengths.

Now onto the next problems. Still wrestling with the generator. Governor doesn't seem to be working. When revved up the generator puts out 120 volts in appropriate outlets. So it works, but the PTO light isn't on and the governor switch does nothing. We are trying to diagnose. I've attached pictures of what I think are the switches. Can someone tell me how to check these and if they are the right ones on the PTO and transmission? The PTO light was on for a second earlier, but now it never comes on whether the PTO is engaged or not. Any help, as always, is appreciated.

 

[Recovry4x4]

Mystery solved. Just checked the parts TM and guess what? Different driveshafts.

 

[porkysplace]

Mystery solved. Just checked the parts TM and guess what? Different driveshafts.

Different transfer cases also doesn't the M1008 have a NP208 and the M1031 have NP205 for the PTO.

 

[Recovry4x4]

Yes! The TM lists UOCs and it even states in the driveshaft description what transfer it fits.

 

[ecostruction]

Does it give dimensions? Like length? I can take to a driveshaft shop, but need to know how much to add.

 

[porkysplace]

Does it give dimensions? Like length? I can take to a driveshaft shop, but need to know how much to add.

TM9-2320-289-20P.pdf
TM9-2320-289-20P Unit maintenance and depot maintenance parts and special tool lists for CUCV
TM9-2320-289-34p.pdf
TM9-2320-289-34P Direct support and general support maintenance repair parts and special tools lists.