I have a '79 JD 2440. When I am bushogging and get into heavy material, the PTO stops turning. The engine does not pull down, just the PTO stops. When I raise the mower up to ease up on the load, the PTO starts turning again. Any thoughts on what might be the problem.
JD 2440 PTO Stops Turning
- Thread starter JGwinn
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hosspuller
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PTO clutch is either mis- adjusted or worn out. Try adjusting the PTO clutch first. a lot cheaper than the alternative.
Tx Jim
New Member
JGwinn
Which type pto hyd ind or dual stage clutch? I doubt seriously if dual stage type if clutch pedal has free travel that any other adjusting will make pto clutch stop slipping
Which type pto hyd ind or dual stage clutch? I doubt seriously if dual stage type if clutch pedal has free travel that any other adjusting will make pto clutch stop slipping
Verticaltrx
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Yup, that would be independent. As mentioned before it is a wet clutch and is hydraulically actuated. Probably an issue with hydraulic pressure to the clutch, although it is possible the clutch could be slipping due to excessive wear (although less likely.) What kind of hydraulic fluid do you run?
Tx Jim
New Member
Remove sheet metal cover that the gearshift levers poke up through. Locate test port on pto control valve and test psi(165 psi). How long since hyd filter was changed and sump screen checked/cleaned??????
I will check into testing the pressure.
It has probably been 2 years since the fluid & filter were changed and the screen cleaned. I did this when I first noticed the PTO coming to a stop under a load. It hasn't been a priority to have it looked at as I normally just use this tractor for light duty stuff such as pulling a drag type hay rake, loading hay, etc. Normally the heavy mowing (or other things that are PTO operated) is done with one of our other tractors. This tractor isn't getting much of a work out this year in the hay department due to lack of rain so I am trying to get it back going to do some clean up around in smaller areas. Therefore, I need it to be able to pull our smaller bushog.
Thanks to all that have resonded for the help and things to look for.
It has probably been 2 years since the fluid & filter were changed and the screen cleaned. I did this when I first noticed the PTO coming to a stop under a load. It hasn't been a priority to have it looked at as I normally just use this tractor for light duty stuff such as pulling a drag type hay rake, loading hay, etc. Normally the heavy mowing (or other things that are PTO operated) is done with one of our other tractors. This tractor isn't getting much of a work out this year in the hay department due to lack of rain so I am trying to get it back going to do some clean up around in smaller areas. Therefore, I need it to be able to pull our smaller bushog.
Thanks to all that have resonded for the help and things to look for.
Erik M
Silver Member
Did you ever figure out what the issue was with the PTO? My1840PTO was slipping and it was due to a mjor hydraulic leak inside where a bracket had worn through the line. PTO was not getting full pressure, ended up replacing the PTO clutch pack as well as the hydraulic line. New design to the hydraulic line to eliminate the bushing so it won't happen again.
Erik, I haven't figured anything out specific although I suspect that it was related to the hydraulic fluid. Since my original post, I have changed the fluid (changed the filter, clean the screen, etc.) a couple times and with each change, it has gotten better in that the PTO does not stop under a load anymore like it was doing. In other words, it is working like it is supposed to. I have always used the JD Trans fluid so I will continue to do so and will change regularly. The stuff is expensive but still cheaper than tearing into it or taking to someone else to fix. Maybe I lucked out (didn't have to dig into any further) and that is all it needed . Fingers crossed.
Erik M
Silver Member
Glad it is working for you. I had to crack the tractor to fix mine and while in there replaced some worn and or broken shift rails and forks. Wasn't cheap but should be good for a long time now at the rate I use it. Only 6600 hours on it and only 25 since the in-frame rebuild.
If you have any more issues it might be worth getting the pressures tested to see if you may be developing a leak in the line to the PTO. They can measure this without cracking the tractor.
If you have any more issues it might be worth getting the pressures tested to see if you may be developing a leak in the line to the PTO. They can measure this without cracking the tractor.
