Drive train question

[magerdgr]

So, I know it's a long shot, but I have a question about the oddball drive setup in my contact maint truck. The drive shaft goes from the t case to what appears to be a coupler to disconnect the rear shaft when the generator is engaged. However, this coupler doesn't seem to move, and I assume that it is just frozen from sitting so long, but the truck won't drive because the rear shaft won't engage? Is everyone as confused as me now? I just want to know how this setup is supposed to work so I know if this is the problem. Any input? I'll post on g741 as well, but I assume this unit is unique to my weirdo rare truck, and like everything else, I won't be able to find any info.
hoping for help.

 

[vtdeucedriver]

Just as you discribed..............................Engine runs the generator..........When the truck is running and your in 4th gear, is the shaft turning to the splitter?

 

[magerdgr]

Yes shaft to splitter turns. When I try to engage either the gen or the drive, nothing changes visibly on the coupler. I can spin the pully for the gen on the shaft, but the truck won't drive when I shift to drive? Like I said, nothing visibly changes with the coupler when I shift. The linkage is hooked up, and moves, but what I assume is a slider doesn't actually slide?

 

[vtdeucedriver]

Sounds like thats the case. I guess what I would do is take a look at the linkage at that splitter and figure out which direction you need to go for drive and move the handle in that direction and maybe take a soft mallet just to see that your indeed engaging it. I cant say how the set up goes, guess I could grab a Corona and look in the manual.

 

[magerdgr]

If you have access to a manual with that in it, I would be much obliged! I did try banging it in either direction, but had no luck. This has to be the case though, I can't think of any other reason it wouldn't engage that rear end. It has sat since the mid '80's, so its not unlikely that it could be stuck.

 

[vtdeucedriver]

Ok, well it looks like my manuals dont cover the M56. Keep posting this on the G741

 

[magerdgr]

Ok, will do, thanks all the same.

 

[EMD567]

Try TM 9-8031-2. That is the TM for the G741 series powertrain. The copy I found is PDF only- I can't print it, but it is chock full of exploded diagrams and tear down/rebuild instructions.

 

[EMD567]

I don't know if this will help. It covers the M37, M43 and V41. Here is the link www.militarytrucks.ca/Files/m37_manuals/TM9-8031-2_M37_power_train.pdf

 

[magerdgr]

Thank you, I downloaded it, but it doesn't cover my weirdo setup. Rare trucks are cool.... Until they need work.

 

[vtdeucedriver]

Thank you, I downloaded it, but it doesn't cover my weirdo setup. Rare trucks are cool.... Until they need work.

You need to find the manual printed in the 60's for the B1. I thought I had a copy and have not found it yet.