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Turned out to be the light not coming on. I cleaned the contacts and it worked like a champ without having to rev the engine a little.

The M1031 is the M1008 with a PTO, Maint body with on-board 10KW gen (PTO driven), air-compressor and supposed to have a welder too. All CUCVs are the same except for the M1010 according to the sticky at the top of each page in the CUCV forum when it comes to the charging system.

I didn't do mine that way, but it worked like a charm. Drained old filter, closed valve and took the new filter and submerged it in fuel. Shook it a little till all bubbles disappeared. Held it level until I had the base at the bottom of the housing and flipped it up and onto the base in one...

Interesting. I have the same issue with this 1031. Guess I need to check the light and contacts.

Need 4 conexs moved from Ft. Polk, La to Tallulah, La. Each are 7' wide and 9' long. Anyone in the area that can give me a quote?

If you have to crank on it a while at 30, I would think it is the glow plugs at fault. Just replaced the GPs in the 1031 and when I heat them for 15 seconds, it takes maybe one or two seconds to start. It really makes a difference with a good working GP system. As an FYI, I replaced them with...

Me either. I attempted to do a search in the CUCV forum and did not find it there.

I don't know about the M1010, but the digram shows the top alt to charge the front battery. If you only have 10.5v, I would think that you are not getting any charge current back to it.

You got yourself some tough trailers. Sgt COCO wasn't too gentile with that green one when he was moving stuff around so I could get the M1031 out of the yard. I don't think he even put a scratch on it with the big fork lift.

Actually Doghead, most of my info has come from your posts.....:wink: Very informative info you put out. I have realized the stock CUCV system is really simple once you actually think about it and read a little. Myself, I chose to come off the pos of the 12V side of the system with 8ga wire...

OK, Everything I have looked at points to the fact that the glow plugs are in fact 12V on the CUCV. I assume these are for something else?

As suspected, the proximity switch on the transfer case shifter is bad. I did the quick and dirty scotch lock bypass and it worked. Genset puts out correct voltage and the air compressor works great. I used it to air up the tires on the 1031. Too dang lazy to drive it over to the air compressor...

The TM 9-4940-562-23P and TM 9-4940-562-13 are not released nor posted in the resource section as of yet. As I have seen others state, it sure would be nice to have them released. Looks as if the actual truck is being let out, they would release the TMs for it also.

Thanks lavarok. Must be nice having a manual in your possession! LOL

Found out that the GP relay is intermittent. Never seen one do that before. Ussually when they quit making contact, they continue to not make contact. Looks like it is off to NAPA for a relay now.

Nice 1031!

I just printed the two circuits out as pdf files to post for you. All cucv's are the same except for the M1010. If you do not have a M1010, do not use the page for the M1010 only.

Always hot should be from the resistors. The other big wires only get hot when the relay is in the closed position. The pink should be hot when the key is on and the blue is ground. The controller card controls the ground side (light blue) of the relay from what I understand.

Forgot to mention that I also did the 12V conversion bypassing the resistor on the firewall.

Thanks for the clarification about the gov switch. I kinda thought that is what you meant. Also, thanks for the info on needing to put it in 2nd instead of drive. I am currently attempting to figure out why it is a pain to start. I found all glow plugs bad, replaced those with AC60Gs and also...