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freddvm · 06-21-2009, 10:07 PM

Hi JC,
Thanks for your reply. Sorry I do have a single clutch on this tractor.

I do not loose forward motion when the mower quits. It is quite frustrating as several times I have driven quite a ways before I realized the mower was not spinning. It just slowly winds down until the blades are not spinning. In order to get it going again I have to clutch in, stop and cycle to PTO lever a couple of times.

I checked the mower gear box and there is oil in it about 1/2-2/3 of the way up the vertical gear. This mower has a slip clutch I think (2 round plates bolted together at the point where the PTO shaft attaches to the mower?) It all turns very freely when I move the blades or the PTO shaft. That is what makes me think it is the PTO because the PTO shaft from the tractor to the mower stops turning but not rapidly it just seems to loose implusion...so the PTO shaft and blades slowly wind down as I am driving along at the same speed.

Also I did the test you recommended on another post and removed the mower and PTO shaft and I placed the tractor in Neutral and engaged the PTO and truned the tractor engine off. I was easily able to turn the PTO shaft clockwise. When I tried to turn it Counterclockwise abotu 70% of the time it would not turn but 30% of the time I could easily turn the shaft counterclockwise. So does that tell you anything?

Thanks!!
Fred

You can't have live pto and single clutch at the same time. With single clutch you have a transmission driven pto. having live pto and you have a dual stage clutch( 2 clutch disks, two pressure plates both sandwiched in one assembly). Thru the peep hole (hand hole) on th side of you clutch housing you can for sure tell what clutch you have. have you ever seen the picture or actual dual clutch?

I know you said the engine does not bog down but do you lose forward motion about the same time you lose pto power?

I think finish mower requires less amount of torque than does the rotary cutter. Do you have any issue with your brush hog's gear box? do you have enough oil in the gear box. is anything in drive mechanism of your brush hog that is binding? do you have slip clutch for your rotary cutter or do you have shear pin?

You do not have PTO clutch (hydraulic independent) pto. If you have live pto then you have to change you main clutch pack that includes both pto and transmission both in one assembly.

I do not have dual clutch so I have not done adjusting it myself. if you need, I can post procedure off of IT book if you don't already have. I have read the procedure before and find it not too difficult. The fact you are saying no issue with finish mower leads me to believe that there is a good chance your problem may not be pto.

Check the stuff I suggested and report back.

JC,[/quote]

06-21-2009, 10:07 PM	#9 (permalink)
freddvm New Member Join Date: Dec 2007 Posts: 6	Re: Need advice on NH 1715 PTO Issue Hi JC, Thanks for your reply. Sorry I do have a single clutch on this tractor. I do not loose forward motion when the mower quits. It is quite frustrating as several times I have driven quite a ways before I realized the mower was not spinning. It just slowly winds down until the blades are not spinning. In order to get it going again I have to clutch in, stop and cycle to PTO lever a couple of times. I checked the mower gear box and there is oil in it about 1/2-2/3 of the way up the vertical gear. This mower has a slip clutch I think (2 round plates bolted together at the point where the PTO shaft attaches to the mower?) It all turns very freely when I move the blades or the PTO shaft. That is what makes me think it is the PTO because the PTO shaft from the tractor to the mower stops turning but not rapidly it just seems to loose implusion...so the PTO shaft and blades slowly wind down as I am driving along at the same speed. Also I did the test you recommended on another post and removed the mower and PTO shaft and I placed the tractor in Neutral and engaged the PTO and truned the tractor engine off. I was easily able to turn the PTO shaft clockwise. When I tried to turn it Counterclockwise abotu 70% of the time it would not turn but 30% of the time I could easily turn the shaft counterclockwise. So does that tell you anything? Thanks!! Fred You can't have live pto and single clutch at the same time. With single clutch you have a transmission driven pto. having live pto and you have a dual stage clutch( 2 clutch disks, two pressure plates both sandwiched in one assembly). Thru the peep hole (hand hole) on th side of you clutch housing you can for sure tell what clutch you have. have you ever seen the picture or actual dual clutch? I know you said the engine does not bog down but do you lose forward motion about the same time you lose pto power? I think finish mower requires less amount of torque than does the rotary cutter. Do you have any issue with your brush hog's gear box? do you have enough oil in the gear box. is anything in drive mechanism of your brush hog that is binding? do you have slip clutch for your rotary cutter or do you have shear pin? You do not have PTO clutch (hydraulic independent) pto. If you have live pto then you have to change you main clutch pack that includes both pto and transmission both in one assembly. I do not have dual clutch so I have not done adjusting it myself. if you need, I can post procedure off of IT book if you don't already have. I have read the procedure before and find it not too difficult. The fact you are saying no issue with finish mower leads me to believe that there is a good chance your problem may not be pto. Check the stuff I suggested and report back. JC,[/quote]