1950 TO20 PTO

[Anonymous-0]

I need to replace the PTO seals in my 1950 TO20. I pulled the shaft from the tractor and removed the retaining clip, but still can't pull the shaft and bearing out of the housing. There is what looks like an overrun device on the shaft that needs to be removed, but I can't figure out how to remove it. See photo. I took out the Zerk fitting and set screw, but can't see what else might be holding it on, other than friction.

Can anyone tell me whether this even needs to come off to get the shaft out of the housing, and, if so, how to remove it?

Thanks.
John

 

[dcroeker]

There is a 5/16 diameter roll pin about 2 inches long that goes thru the o/r coupler and the pto shaft. Push a probe (a nail, etc )into a grease fitting hole as you turn the o/r coupler, when you find the pin, drive it out thru the opposite side with a 5/16 dia punch.

 

[Anonymous-0]

I found a 5/16 hole that goes all the way through the o/r but there was was no pin in it. Does that mean the o/r is frozen on the PTO shaft?

Thanks.

 

[Hal Hadaller]

Roll pins have holes all the way thru them so you will be able to see thru it. But there still is a pin. Use something just slightly smaller than 5/16 and the roll pin will drive out.

 

[Tim in VA]

I am going to try to post a picture so that you can see the pin that everyone is talking about. I haven't ever posted a picture before but I'll give it a try.

 

[Anonymous-0]

Okay, now I feel really stupid. If I had been more thorough in cleaning the o/r of grease, I would have seen the pin.

Thanks.

John

 

[Jeff-oh]

Don't feel stupid, This past spring I tried to drive out the pin with a screw driver and ended up with a bent broken screw driver stuck in the PTO ORC.

It took a pair of vise grip pliers and a BFH to get the screw driver out...

Now I have a made to fit roll pin driver. I went to the hard ware and purchased a 6" bolt of the right diameter and cut the threads off with a hack saw.

Jeff.

 

[Jeff-oh]

Once you get the seal out of the housing I found that a 2" straight - Schedule 40 - PVC coupler makes a good driving tool.

Place the seal in the seal housing and drive flush with a flat board and a vice. Then insert the coupler to drive the seal all the way home. The thickness is enough to catch the seal edge and it is the right diameter to slip in and out of the housing. (Note: I did this on a MF-65. Take your seal housing to the hardware to verify fit.)