PTO not working

[search4one]

You bring up a good point California. I emailed Leonard at Sheaffer Town & Country Tractor and he told me it was probably one of three things, low hyd. pressure, worn out clutches and or a bad O-ring. Pretty sure my hyd. pressure is good. I am supplying a link to the diagrams to the PTO showing the clutches and if you look in Figure 61 Part #17 is an O-ring.

Yanmar F395D PTO Click on the photo and six pages will come up.

One more thing that could possibly be the culprit. I have lever underneath the steering wheel that says "PTO" and some Japanese writing. It slides up and down and seems to have three positions. But none of them seems to have any effect on the PTO. Maybe before I tear into the rear end, I will get in there and see if maybe this lever is the UFO you speak of and it is not connected.

Thanks for everyone's response.

Randy Baker
Red Bluff, CA

Try the link again: Yanmar F395D PTO

 

[California]

I emailed Leonard at Sheaffer Town & Country Tractor and he told me it was probably one of three things, low hyd. pressure, worn out clutches and or a bad O-ring. Pretty sure my hyd. pressure is good. I am supplying a link to the diagrams to the PTO showing the clutches and if you look in Figure 61 Part #17 is an O-ring.

Yanmar F395D PTO Click on the photo and six pages will come up.

One more thing that could possibly be the culprit. I have lever underneath the steering wheel that says "PTO" and some Japanese writing. It slides up and down and seems to have three positions. But none of them seems to have any effect on the PTO. Maybe before I tear into the rear end, I will get in there and see if maybe this lever is the UFO you speak of and it is not connected.

Ok, per Figure 61 and the related parts list that is definitely a clutch pack, engaged by hydraulic pressure. #17 is the piston ring on #2, Piston. It would be impossible to use a pto until it is so worn out that you could stop it with your hand. (Don't Do That!) So I think some hydraulic circuit or solenoid, isn't actively sending pressure to push that piston and engage the clutches. Diagnosis would be similar to the various pressure tests diagnosing an automatic transmission. Or tracing electric signal circuits (collectively known as UFO System) to find something that triggers a solenoid, might be an easier place to start.

Good luck with this. Somebody out there must understand UFO plumbing ....

 

[Neat 1500]

WOW, that's about 1/2 an auto trans used for the PTO. Interesting idea but very hard to diagnose and repair faults in them. Give me a direct gear driven PTO anyday.

 

[winston1]

I agree with California, I would certainly lean toward shift linkage or electrical. Now having seen what you have I will say a complete tear down would be the only way to access the pto internals.

 

[search4one]

I appreciate everyone's replies.

Recently purchased a Bronson 4720I so I am getting ready to sell this tractor. Obviously it will bring a better price with the PTO working but tearing it all down isn't realistic for my situation. I have a backhoe for it so I might just put the backhoe on it and hopefully can find a buyer that wants it for the backhoe and isn't in need of the PTO.

Thanks again ,
Randy Baker
Red Bluff, CA

 

[careyo63]

If the PTO shifts into gear and turns but will not turn under pressure then my guess is Hyd.. No Hyd. pressure to the clutch pack. There would have to be a screen or filter to the clutch pack preventing dirt, metal etc. getting to the clutches. I could not see one in the diagram's..

 

[search4one]

Got the PTO working. The lever that I mentioned in an earlier post had an electrical switch that was not hooked up. Fed it 12 volts and all is good, PTO working.
Thanks again for everyone's relies.

 

[SJay]

Thanks for the update - it maybe a help to someone else :thumbsup:

 

[kenmac]

sometimes we think/ look for the hard things, when the simplest things are all that is wrong ! Congrats !

 

[clemsonfor]

good to hear. thanks for the follow up as well. Might help someone and may be the only spot this is found on the net.