IH 656 PTO re-install

[mgc1963]

I rebuilt the PTO in my 656. The problem is I can't get it back into the tractor, the splines wont go back into the shaft coupler in the rear end. I spent 2 hours fighting it. I was afraid to beat it with a hammer, or try pulling it in with bolts. It's not supposed to be this hard, is it? And I know the splines on PTO are fine, no damage. This is not a hydro tractor. Marv

 

[BarnyardEngineering]

It should slide together easily. Do NOT pound or force it. Either things aren't lined up or there is unseen damage.

 

[mgc1963]

When I removed it, I couldn't pull it by hand, so I went in whit a pry bar and it came loose with a slight tap. Should the coupler come off easily from the long shaft inside? Wondering if it does, I could install coupler on pto then try to slide it in

 

[Larry986]

I rebuilt the PTO in my 656. The problem is I can't get it back into the tractor, the splines wont go back into the shaft coupler in the rear end. I spent 2 hours fighting it. I was afraid to beat it with a hammer, or try pulling it in with bolts. It's not supposed to be this hard, is it? And I know the splines on PTO are fine, no damage. This is not a hydro tractor. Marv

You may need to remove the third link bracket and reach in to line things up. The splines may not be aligned, and you might need to lift the end of the shaft a little. Do you know for sure that the shaft has started into the coupling?

 

[mgc1963]

My forearm is too big to fit in that hole, lol. I ended up pulling the shaft out, the coupler has lots of sharp burrs at the start of the spline. I am using a chainsaw file to smooth things up, then it should slide right in, I hope

 

[Mrfred54]

May have to have someone bump the starter while you are sliding it in to line up the splines

 

[Hayfarmer]

If that unit is like the 560 the book said to use alignment bolts to get unit started in straight. Mine was heavy so that really helped.

 

[caterpillar guy]

I would suspect it needs the shaft lifted just a bit, once you have the spline so they fit well. You could fashion a hook from a rod or a wire to lift it through the hole for the third link if you can't get your arm in there With a larger wire or smaller rod having a hook you could just let it loose once you have he spline aligned. I would make a loop on the outer end and tie a cord /rope to it so it could not fall in before use.

 

[300guy]

You need to get some grade 8 bolts that are 6 or 8 inches long. the longer the better. Cut the heads off and screw 4 of them into the tractor. When you put the PTO on the guide pins it will help align the coupler and the shaft. I used them on my 300 a few years ago and it fell into place.

 

[Janicholson]

I rebuilt the PTO in my 656. The problem is I can't get it back into the tractor, the splines wont go back into the shaft coupler in the rear end. I spent 2 hours fighting it. I was afraid to beat it with a hammer, or try pulling it in with bolts. It's not supposed to be this hard, is it? And I know the splines on PTO are fine, no damage. This is not a hydro tractor. Marv

Lifting with a floor crane, or the bolts as noted is great. to assist use a 1-1/4" pipe about 5 ft long on the external shaft to align the internal shaft! Jim

 

[300guy]

Yeah forgot that about the pipe Jim!!!

 

[mgc1963]

I pulled the long shaft out of the rear-end and cleaned up the splines in the coupler, got it together and now my pto works!
Last leak to fix is in the lift and draft control area, but that scares me a little.

 

[Mrfred54]

Leaking out of the control shaft for position control and draft control ?? Not that bad to repair. Removing fender helps a lot. Remove seat, and plate under the seat. Drain plug in the left front corner of the hydraulic housing. 5/8 socket I believe. On the ends of the tube and shaft is a roll pin and snap ring and remove the bolts holding the quadrant and slide out the linkage and you will see the oring that need to be replaced. The second oring is right at the outer end of the shaft and tube.

 

[mgc1963]

Mrfred54, I washed the tractor yesterday, but didn't have time to really inspect that area. Previously that side and rear was always very wet, so it is a significant leak. If it is that easy, I will be a happy camper

 

[Ellis Kinney]

I just finished doing that for a Super MTA. I used all thread rod to slide the PTO back in. Once you get it started to line up, tighten the nuts on the ends of the all thread rod to pull it in evenly. Ellis