D series PTO won't disengage

[wheeledhorseman 579]

In the course of restoring my first D-200 I discovered the importance of the spring clip and washer that sits behind it inside the PTO assembly shaft.

 

 

It took me ages to puzzle out that the reason that the PTO pulley did not line up with the pulley on the PTO shaft below was that the PO had lost both the clip and washer. The fact that something was wrong also manifest itself in that tightening up the bolt that secures the assembly to the crankshaft resulted in the clutch plates being gripped firmly locking the pulley section to the crankshaft.

 

I've just started on a second D project and discovered that once again I had a PTO clutch that was permanently engaged and that adjustment would not cure. Removing the end bolt I could see both a spring clip and washer so all looked well and it couldn't be that or could it? - appearances can be deceptive!

 

This D has no PTO shaft from front to rear of the tractor so there isn't a lower pulley, if there had been I would have seen that something was actually wrong here. Adding a second washer behind the circlip must solve it I thought but no, it still pinched the clutch plates together when I tightened the end bolt. How can this be I thought - until it dawned on me what was happening.

 

Somehow the spring clip had been ejected from the groove that it should sit in and as the end bolt was tightened it was being pushed along inside the bore. Looking down the shaft it had looked ok but on the bench all was revealed. There was no damage to the grove or spring clip, possibly the PO had not installed it correctly..

 

With it on the bench iI did notice that the washer was reluctant to move down the bore getting caught at odd points. The machined bore was not noticable damanged in any way but I did find some high spots on the edge of the washer from where it had been stamped out. With those cleaned off it slid into place perfectly. It's also possible then, that when reassembled on a previous occasion the washer did not rest squarely on the clip and levered it out of it's groove as the end bolt was tightened.

 

I'll never know which it was but I thought I'd post the experience in case anyone else gets caught out with this. All may look well down that shaft when you remove the end bolt but is the clip actually sitting in its groove?

 

Hope somebody may find this useful in the future.

 

Andy

[JamesBe1 84]

Very nice troubleshooting Andy.  It would have taken any of us many hours to (maybe) figure it out. 

 

So it all comes down to a sketchy washer? 

 

You are lucky that the internal groove didn't get beveled.  You would have probably would up with a useless piece of metal if that had happened.

[chrisd200(inactive) 56]

In the course of restoring my first D-200 I discovered the importance of the spring clip and washer that sits behind it inside the PTO assembly shaft.

 

 

It took me ages to puzzle out that the reason that the PTO pulley did not line up with the pulley on the PTO shaft below was that the PO had lost both the clip and washer. The fact that something was wrong also manifest itself in that tightening up the bolt that secures the assembly to the crankshaft resulted in the clutch plates being gripped firmly locking the pulley section to the crankshaft.

 

I've just started on a second D project and discovered that once again I had a PTO clutch that was permanently engaged and that adjustment would not cure. Removing the end bolt I could see both a spring clip and washer so all looked well and it couldn't be that or could it? - appearances can be deceptive!

 

This D has no PTO shaft from front to rear of the tractor so there isn't a lower pulley, if there had been I would have seen that something was actually wrong here. Adding a second washer behind the circlip must solve it I thought but no, it still pinched the clutch plates together when I tightened the end bolt. How can this be I thought - until it dawned on me what was happening.

 

Somehow the spring clip had been ejected from the groove that it should sit in and as the end bolt was tightened it was being pushed along inside the bore. Looking down the shaft it had looked ok but on the bench all was revealed. There was no damage to the grove or spring clip, possibly the PO had not installed it correctly..

 

With it on the bench iI did notice that the washer was reluctant to move down the bore getting caught at odd points. The machined bore was not noticable damanged in any way but I did find some high spots on the edge of the washer from where it had been stamped out. With those cleaned off it slid into place perfectly. It's also possible then, that when reassembled on a previous occasion the washer did not rest squarely on the clip and levered it out of it's groove as the end bolt was tightened.

 

I'll never know which it was but I thought I'd post the experience in case anyone else gets caught out with this. All may look well down that shaft when you remove the end bolt but is the clip actually sitting in its groove?

 

Hope somebody may find this useful in the future.

 

Andy

WOW!!! Great info. Wished I would have found this sooner. I finally got sick and tired of mine not disengaging so after a few attempts to fix it, I replaced it with a double groove heavy dutty electric clutch. The blades stop in about 2 seconds now but would have been nice to have left the tractor original.