MF 40 (Navy) tractor (really a MF 40 backhoe/loader) - P

[patracy]

I'm working on a MF 40 tractor that the US navy had. It really is just the MF backhoe/loader since it has the automatic transmission in it. (Just doesn't have a backhoe or FEL) The internal Hyd pump wasn't working. So I've started taking it apart to repair. I've found the filter screen was half gone and the pump is full of what looks like wheel bearing grease. I figure while I have it apart, I'd like to add a PTO shaft to it. It looks like this tractor uses the same setup as most other MF from the period. But I'm trying to figure out how the hyd pump comes out. I've seen a post about the bullet that is in there supporting the back section of the pump. Does the tractor have to be split to get the pump out as well as that bullet? I think I see a bolt head on the backside of the bullet where the PTO shaft would be?

Next, to add the PTO shaft, I assume I just need the shaft, inner and outer bearings/seal/retainer. Then the selector off the side of the tractor and I suppose the gear?

 

[2tractors]

If it has a pump the cover under the seat has to be pulled and you must not take all the bolts loose, there's instructions in the archives and on you tube.

 

[patracy]

I understand the top cover and the 4 bolt to not remove for the lift cylinder. But it appears that there's no way to get clearance to get the hyd pump out due to this bullet in the housing. I'm pretty much ready to split the tractor now though. I've got it down to two bolts holding the rear end to the transmission right now. I've got 4 long bolts to keep it close to aligned though. I'm going to try to pull it apart with those bolts. It should give me enough room to knock that bullet back out. I thought about just cutting the bullet, but that's kinda destructive. I think all the PTO stuff from a 135 will fit in there. But it'll be better to keep the parts if that doesn't work out.

 

[John Deere D]

Pic are of my MF 35 X....
Installed a HYD. PUMP..
Possibly pics shall assist you...
I separated DIFF assembly from transmission, as there was an OIL leak between the aft of the transmission, and the DIFF housing that required a new gasket.
Bob..

https://www.yesterdaystractors.com/cvphotos/cvphoto115612.
<img src=https://www.yesterdaystractors.com/cvphotos/cvphoto115613.jpg

 

[patracy]

I'm down to this point internally. But my tractor doesn't have a PTO shaft. It's got a bullet/plug that sits where the bearing would be and the pto shaft would extend through. There's not enough space fore or aft to allow the pump to move out of the housing. The bullet is driven in from this internal side of the case as well. So it appears the only way to remove the pump is to split the rear end from the transmission to allow me to get the pump out, as well as drive that bullet out.

My plan is to do that. Hopefully the donor 135 I have a line on will allow all the pto shaft to go back into place. It will certainly make the pump servicing easier in the future. Just stinks that MF used this approach to make this setup. A slight redesign of the bullet into two pieces and the bolt holding the pump center would have allowed this to not be a split the tractor ordeal. At least that's what I've decided from working on this.

 

[John Deere D]

..........yes there is a phrase I was using before retirement.......
Design as to make it user friendly..

Bob..

 

[ptfarmer]

You should be able to get to it from the back side with a socket and extension, then remove it.