LD1
Epic Contributor
whoopsBush hog blade stopping
- Thread starter yanmars
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whoops
DieselBound
Elite Member
I'm in agreement with others who suggest this being a hydraulic issue. I'd take a close look at the various filters for the hydraulic system. The HST might be taking up as much of the hydraulic flow as possible and leaving insufficient flow to drive the PTO. With low-load there's enough flow for the PTO to handle the lighter grass.
Not sure how possible it is, but perhaps try putting your tractor into your higher grass and run the RC while NOT in gear/traveling. This would assure that all available hydraulic flow is available for the PTO. I'm no expert in any way on hydraulics, but I'm thinking that IF the cutter is able to cut w/o any issues that it wouldn't be a PTO clutch-pack but a basic system flow issue (filter would be an issue perhaps- I know that there are things like strainers- my B7800 has one and it's maintenance schedule calls it out to be cleaned).
Please note that "filters and fluid changed [recently]" isn't qualifying things. No idea if the prescribed procedures were done PROPERLY. Again, note my comment above on the strainer. If someone doesn't know about something like this then it's something that is likely going to be missed (until one finds one has a problem).
Not sure how possible it is, but perhaps try putting your tractor into your higher grass and run the RC while NOT in gear/traveling. This would assure that all available hydraulic flow is available for the PTO. I'm no expert in any way on hydraulics, but I'm thinking that IF the cutter is able to cut w/o any issues that it wouldn't be a PTO clutch-pack but a basic system flow issue (filter would be an issue perhaps- I know that there are things like strainers- my B7800 has one and it's maintenance schedule calls it out to be cleaned).
Please note that "filters and fluid changed [recently]" isn't qualifying things. No idea if the prescribed procedures were done PROPERLY. Again, note my comment above on the strainer. If someone doesn't know about something like this then it's something that is likely going to be missed (until one finds one has a problem).
ptsg
Super Member
The HST is a separate hydraulic pump and motor combo. The only thing it shares with the rest of the hydraulics on the tractor is the fluid.
There is, however, two hydraulic gear pumps. One, the smaller one, handles the steering and the PTO clutch pack (lube and pressure). The second and bigger pump runs everything else on the tractor like, loader, 3pt and remotes.
To the OP, at this point, just grab the workshop manual for that tractor, get a pressure gauge and figure where to check the clutch pack pressures using the manual as guide. Then proceed from that.
Did not check the pressure. Have no gauges at this time to do so. Will check the NH manual to see if there is a screen. Since my main tractor is down and I need to get areas mowed before grass waterway work can be started I mowed at follows. Tractor RPMs as should be, very slow forward speed. Mowed first 18 inches high, then 12 and then 6 or so. Got the mowing about done but it was very slow. Took about 4 times longer than normal but as least I was able to get it done almost. Did not bog down much so overall it worked.
I do not want to bring it to the shop at this time or I am without a mower.
I do not want to bring it to the shop at this time or I am without a mower.
workinonit
Elite Member
No, we're not all wondering. Not but one thing it can be.
TMGT
Elite Member
Check the pressure asap, if the clutch pack isn't fried yet it will be in short order if you keep using it. Not familiar with the NH but other brands use a relatively low pressure for the clutch pack, usually around 4-500psi. Gauges and adaptors are cheap, the clutch pack and time to replace are not!
Hopefully its just low pressure and you can catch it in time and save it.
airbiscuit
Super Member
- Joined
- Aug 28, 2004
- Messages
- 6,518
- Location
- NW Wisconsin
- Tractor
- New Holland T2310 (40hp), Kubota L3010 GST, New Holland TC21DA *** Previously - Farmall H, 1941 John Deere B, Shibaura SD1500, John Deere 850, Bobcat 642, New Holland 1925
Right answer.
Tx Jim
New Member
If it was my tractor I'd block clutch pedal down when sitting idle for any lengthy period of time
Just an update. I am thinking it is a PTO issue. When the PTO was turned off the noise ended. Also with the PTO off the tractor functions and operates normally with full power.
If it is a PTO seal etc. issue is that an expensive fix? For what I need to do now, loader work etc. I do not need the PTO.
Can use my other tractors for that but just curious if any idea about such repair costs for anyone having had that done. Thanks
If it is a PTO seal etc. issue is that an expensive fix? For what I need to do now, loader work etc. I do not need the PTO.
Can use my other tractors for that but just curious if any idea about such repair costs for anyone having had that done. Thanks