jimainiac
Platinum Member
To David In VT, were you late, hour-wise in changing the HST fluid and filter? Do you think that that, plus the cold, had something to do with the slipping last winter?
HST Transmission Problem in L3130
- Thread starter peacefulone
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Yankee Clipper
Gold Member
Before you get too worried, pull the two spin on filters. If loaded with metal, then drain your fluid and see what other type of stuff comes out - brass is not good to see at this juncture.
If it is full of metal or other debris, time to call the dealer as likely the charge pump or other hydro component has come apart.
FYI the PTO on grand L 30s is independant so pushing the clutch will have no effect - moving the PTO handle on and off is the only control on the 30 series PTO.
I'm hoping your failure is minor and a good fluid drain and filter change fixes it for you.
Good luck!
If it is full of metal or other debris, time to call the dealer as likely the charge pump or other hydro component has come apart.
FYI the PTO on grand L 30s is independant so pushing the clutch will have no effect - moving the PTO handle on and off is the only control on the 30 series PTO.
I'm hoping your failure is minor and a good fluid drain and filter change fixes it for you.
Good luck!
slowzuki
Elite Member
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- New Brunswick, Canada
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- Kubota L5030 HSTC, MF 5455, Kubota M120, Allis Chalmers 7010
Hello Yankee the main clutch does disengage the pto. The pto is only semi independent on the hydro models. I use the main clutch to start heavy pto loads instead of letting the little pto clutch do it.
OP
peacefulone
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- Mar 8, 2009
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I heard back from the Kubota dealer today. Their thought, based upon the information I shared is that I may have broken a clutch fork. I'm not familiar with the inner workings of the tranny, but he made it sound like the clutch fork is inside the beast and is the part that engages and disengages the transmission.
Of course, they couldn't tell until they actually looked at it, but if that's what it ends up being, then they have to open 'er up and get into it. The guy said, "Probably not what you wanted to hear, but we don't have any other ideas at this point."
To all the fellas talking about oil quality and filters, I changed the filters at 250 hours when I bought the tractor and the fluid was good. I topped it off per the manual and dealer when I changed the filters and all has been good. The fluid is STILL clear even with this problem so it looks like I have a pretty significant issue on my hands.
I'll let you all know what the final outcome is when the dealer or other local shop takes a look.
Of course, they couldn't tell until they actually looked at it, but if that's what it ends up being, then they have to open 'er up and get into it. The guy said, "Probably not what you wanted to hear, but we don't have any other ideas at this point."
To all the fellas talking about oil quality and filters, I changed the filters at 250 hours when I bought the tractor and the fluid was good. I topped it off per the manual and dealer when I changed the filters and all has been good. The fluid is STILL clear even with this problem so it looks like I have a pretty significant issue on my hands.
I'll let you all know what the final outcome is when the dealer or other local shop takes a look.
rbargeron
Elite Member
This is a pretty old thread (2009) - but similar threads still appear from time to time.
Over the years as HSTs have become common, the lowly foot-pedal clutch has faded from attention. But on most HST models, a foot-pedal clutch behind the engine still runs the tractor, including the HST. For the HST to function the charge pump has to be turning - no clutch, no charge pump, no motion.
An HST is just a variable-speed coupling. Its not well-understood and its "black box" aspect makes it a likely suspect whenever a tractor stops moving as expected. The HST is rarely at fault, but the clutch often is.
The dealer comment above about a possibly broken clutch fork doesn't ring true to me - a broken fork would only prevent the clutch from disengaging, not keep the tractor from moving. Take care, Dick B
Over the years as HSTs have become common, the lowly foot-pedal clutch has faded from attention. But on most HST models, a foot-pedal clutch behind the engine still runs the tractor, including the HST. For the HST to function the charge pump has to be turning - no clutch, no charge pump, no motion.
An HST is just a variable-speed coupling. Its not well-understood and its "black box" aspect makes it a likely suspect whenever a tractor stops moving as expected. The HST is rarely at fault, but the clutch often is.
The dealer comment above about a possibly broken clutch fork doesn't ring true to me - a broken fork would only prevent the clutch from disengaging, not keep the tractor from moving. Take care, Dick B
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