Working on the '49 M.

[Kevinwterry]

Hey everyone, I decided to bring the M back into the shop to add a pair of rear wheel weights I found. I have no idea of how you guys install those things without a crane!!. I happen to have any overhead hoist and they still were tough to install. Also need to move the fenders closer to the wheels. It didnt have any, bought a new set because my small kids like to ride along. Makes it feel safer, plus it gives me something to hold onto while they drive(steer) by themselves. But its tight getting on and off right now.

Anyways, as im looking at it Im thinking about fixing the hydraulic system as well. This tractor is 1 of 2 that I actually got to drive onto the trailer out of about 20 that I own. I think I last counted 13 of them run now. We dont farm at all, have just 5 acres. I use these old tractors to pull trailers around and small jobs around the house. I didnt really look into fixing the hydraulics because I have no use for them. I recently added an aftermarket 3 point to the H, so it got me thinking.

The upper rod is stuck. The tab below it moves. The lower rod that goes into the bell housing area moves fine. On my H that rod turns on the hydraulics. So im assuming the upper does the up and down.

Also what is going on with the remotes? That lever just moves a spring. Can't tell what its supposed to do.

 

[used red MN]

The valve that the upper lever goes to is what is commonly referred to as a “Christmas tree” and yes as you stated it allows a single action belly pump the ability to provide control of double acting cylinders. That upper cavity should be oil free with a mechanism to activate the spool internally. This link has a break down diagram CNHI Farmall M hydraulics parts catalog
If you choose diagram 276 in the Hydraulic System Functional Group there it shows what is called the “break away” system to couple the hoses. The lever locks in the implement side of the connection unit, but supposedly a greater force as would be encountered by the implement disconnecting would unlock the lever to let the hoses break free. We never had any of those fancy break aways or at least they were not being used when I got to operator age in the early 60’s. We just had female threaded sleeve nuts for the Aeroquip fittings that made the connection screwing onto the male portion on the tractor side. Unless you are a sticker for original I would just install modern Pioneer type quick couplers.

 

[Kevinwterry]

Thanks for that info!! So it looks like part number 9 is likely stuck. I should be able to pull the top off and investigate.

I scrolled over to 276, and now it makes more sence. Ya, if I can get the lever to move again I'll just replace the lines and use the pioneer connections like my H has.

Thanks again!!