I recently purchased this tractor and am working my way through it. It runs good , hydraulics work well, gears all work, Clutch is smooth and does not slip. My pto does not work, turns free all the time, no noise of any kind. I think this was a 2stage clutch tractor. My serial number is l275dx526-94. Any help in what direction this repair will take me would be helpful. Thankyou for your help.
Broken PTO on L275DX
- Thread starter farmajohn
- Start date
Russell King
Well-known member
Lifetime Member
Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
There are many gears and shafts involved in that system. Near the back of the tractor is a coupler between the output shaft and everything that is involved between the engine and that output shaft. Unfortunately that is inside the cases and cannot be easily looked at (as far as I understand it). I think you have to take off the large cast part underneath the seat to gain some sight to that area.
You can see illustrated parts lists here. Look under clutch then PTO gear case.
apps.kubotausa.com
You can get a Work Shop Manual (WSM) at this site. Look for a list of numbers like L185, L225…L275, …L355
You can see illustrated parts lists here. Look under clutch then PTO gear case.
Kubota Tractor Corporation - Illustrated Parts List
- K-PAD - Parts Lists - Illustrated Parts Lists - diagrams
You can get a Work Shop Manual (WSM) at this site. Look for a list of numbers like L185, L225…L275, …L355
North Idaho Wolfman
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Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
The serial number on that model will not tell you if it has a single or dual clutch disk.
You might be able to tell if you pull the inspection plate on the right side of the bellhousing.
Rather odd for a clutch for the PTO to be completely out.
They will normally not disengage.
How does the PTO lever feel?
You might be able to tell if you pull the inspection plate on the right side of the bellhousing.
Rather odd for a clutch for the PTO to be completely out.
They will normally not disengage.
How does the PTO lever feel?
There are many gears and shafts involved in that system. Near the back of the tractor is a coupler between the output shaft and everything that is involved between the engine and that output shaft. Unfortunately that is inside the cases and cannot be easily looked at (as far as I understand it). I think you have to take off the large cast part underneath the seat to gain some sight to that area.
You can see illustrated parts lists here. Look under clutch then PTO gear case.
Kubota Tractor Corporation - Illustrated Parts List
- K-PAD - Parts Lists - Illustrated Parts Lists - diagrams
You can get a Work Shop Manual (WSM) at this site. Look for a list of numbers like L185, L225…L275, …L355
Thank you both for replying. Fortunately parts, service, and owners manual came with this tractor. It was owned by a local nursery, was pretty well maintained for the most part. The pto lever feels like it has 3 positions with the tractor running clutch in I can move it through all 3 with no noise. Clutch out pto not turning and no noise. Again thank you.
Russell King
Well-known member
Lifetime Member
Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Well I don’t 100% understand your statement but will just comment anyway about the PTO operation on my similar L185 but take them with a grain of salt because Kubota did do different thinngs with the larger tractors of the same series.
For the clutch there are really two involved in the PTO system. There is an overrunning clutch (ratchet) in the rear internals of the tractor. That allows an implement like a mower to continus to turn and not drive the tractor drive wheels. In the older versions of PTO there was not a disconnect so when the drive clutch was pushed down when operating a mower the tractor was still being powered to the wheel by the mower. I am pretty sure your tractor has the overrunning clutch built into it. If you can turn the PTO shaft in both directions (with the tractor not running) that may need to be repaired or replaced.
The second clutch is the main drive clutch that is operated by the pedal. It is similar to a clutch in any automobile. But there are a couple of different types of these clutches on tractors (3 types if I recall correctly). The original type (which I have on my L185 and I think you have also) is just a single stage clutch (like a car or truck). Pushing the pedal down disengages the clutch and stops ALL drive past the clutch. The drive wheels and the PTO are both disengaged with the pedal down. Both are engaged with the pedal up if the shifters are in a gear. A two stage clutch is similar but The PTO is engaged first, then as the pedal is moved higher then the drive wheels are engaged. So, during operation with the tractor in gear and the PTO in gear, if you push the clutch pedal half down the drive wheels are no longer powered but the PTO is still powered. Pushing the clutch completely down then disengages the PTO also. The third type is called independent and is exactly what the name implies- PTO clutch is independent of the drive clutch.
As to the PTO gearing, there are three PTO gears on the tractor. First is 540 RPM out on the PTO shaft, Second is a higher speed (750?), and Third is another higher speed (1000 RPM). In the USA most implements are based on the 540 RPM PTO speed so should not be run at higher speeds. There is a mark on the tachometer that indicates what engine speed is required to achieve the PTO speed (will be near full throttle).
For all the gearing on the tractor they are NOT synchronized gears so you do not shift gears if the tractor is moving. You select the gear (speed) that you want and release the clutch pedal. If too slow or too fast then you stop, select a different gear and then go. There will be some grinding of gears unless you come to a complete stop and wait for the gears to stop all rotation. There may still be a slight grind to get the gears to mesh but not a lot of grinding.
So if you can easily shift your PTO lever into gear with the clutch pedal released and the engine running, you may just have a problem in that shift fork in the transmission. There is a cover over that area to take the shifter off the tractor and you can then see the gears and shifting mechanism. It takes some finesse to get that cover and shifter back onto the tractor but the repair manual may cover that.
For the clutch there are really two involved in the PTO system. There is an overrunning clutch (ratchet) in the rear internals of the tractor. That allows an implement like a mower to continus to turn and not drive the tractor drive wheels. In the older versions of PTO there was not a disconnect so when the drive clutch was pushed down when operating a mower the tractor was still being powered to the wheel by the mower. I am pretty sure your tractor has the overrunning clutch built into it. If you can turn the PTO shaft in both directions (with the tractor not running) that may need to be repaired or replaced.
The second clutch is the main drive clutch that is operated by the pedal. It is similar to a clutch in any automobile. But there are a couple of different types of these clutches on tractors (3 types if I recall correctly). The original type (which I have on my L185 and I think you have also) is just a single stage clutch (like a car or truck). Pushing the pedal down disengages the clutch and stops ALL drive past the clutch. The drive wheels and the PTO are both disengaged with the pedal down. Both are engaged with the pedal up if the shifters are in a gear. A two stage clutch is similar but The PTO is engaged first, then as the pedal is moved higher then the drive wheels are engaged. So, during operation with the tractor in gear and the PTO in gear, if you push the clutch pedal half down the drive wheels are no longer powered but the PTO is still powered. Pushing the clutch completely down then disengages the PTO also. The third type is called independent and is exactly what the name implies- PTO clutch is independent of the drive clutch.
As to the PTO gearing, there are three PTO gears on the tractor. First is 540 RPM out on the PTO shaft, Second is a higher speed (750?), and Third is another higher speed (1000 RPM). In the USA most implements are based on the 540 RPM PTO speed so should not be run at higher speeds. There is a mark on the tachometer that indicates what engine speed is required to achieve the PTO speed (will be near full throttle).
For all the gearing on the tractor they are NOT synchronized gears so you do not shift gears if the tractor is moving. You select the gear (speed) that you want and release the clutch pedal. If too slow or too fast then you stop, select a different gear and then go. There will be some grinding of gears unless you come to a complete stop and wait for the gears to stop all rotation. There may still be a slight grind to get the gears to mesh but not a lot of grinding.
So if you can easily shift your PTO lever into gear with the clutch pedal released and the engine running, you may just have a problem in that shift fork in the transmission. There is a cover over that area to take the shifter off the tractor and you can then see the gears and shifting mechanism. It takes some finesse to get that cover and shifter back onto the tractor but the repair manual may cover that.