Help with clutch problem

StevenT · Oct 20, 2014

Good day folks.

I have an old Kobuta B6100E.
I've had it for years and it owes me nothing.

A few years ago I had a new clutch installed and it operated fine.
I seldom use the tractor and probably have around 20 hours on the new clutch.

The tractor has been sitting for about a year or so and now when I try to use it, the clutch does not disengage the drive.

I start in neutral and can get it in gear but the clutch does not disengage the drive.

Any suggestions?

Thank you

old · Oct 20, 2014

Common problem with most any thing with a clutch. Get it out into an open area and then start it in gear the highest you can and take it for a drive. Hold the clutch pedal down as you drive it. Tap on the brakes can also help some. Be ready to drive it till the engine has warmed up real good. Also when you park it block the clutch pedal down so it does not happen again

Tx Jim · Oct 20, 2014

Sometimes if tractor is started with clutch pedal blocked down and engine allowed to get up to operating temperature clutch disk will free up.

Bob in SD · Oct 20, 2014

What causes this? This just happened to an old truck we had parked for a few months. It broke free and is fine now, but I'm having trouble figuring out what rusted to what to cause this to happen.

old · Oct 20, 2014

The clutch disk has metal fibers in it so they rust tight to the flywheel or pressure plate and stick

FBH44 · Oct 20, 2014

Seems llike I thought the metal fibers were brass or bronze. They ought not to rust themselves to other metal, I would think.
I always thought the sticking was due to a collection of grease that hardened and stuck things together. Might be wrong.

Adirondack case guy · Oct 20, 2014

Your Kubota should have a tab to hold the clutch pedal down when it is in storage, so that doesn't happen.
Loren, the Acg.

jm. · Oct 20, 2014

Not a tab on that one but it came with a small short wood block that no one ever uses but it cures the problem. Mash the clutch and put the block in place when you park the tractor. As for getting it un stuck, as the others have said load the unit try and get in a higher gear and drive around with the clutch pedal mashed or cycle it up and down. Soon as the tractor warms up usually will come loose. AFTER you get it working hold your foot on the clutch and just let it try to engage or slip the clutch for just a short time, will help polish the pressure plate.

showcrop · Oct 20, 2014

I would say that from this coming up probably 25 times in thirteen years that it is due to humidity.

Bob in SD · Oct 21, 2014

So the pressure plate does retract, but the clutch disk is frozen to the flywheel?

thanks,

mkirsch · Oct 21, 2014

Yes.

BTW even if the fibers in the disk are not steel, the flywheel IS steel. The rust that forms on the flywheel works its way into the microscopic gaps in the surface of the clutch disk.

old · Oct 21, 2014

Likely to be rusted to either one and that is enough to cause your problem

Trkr · Oct 21, 2014

If your bellhousing has a inspection hole or cover,lock the pedal down and take a long screwdriver,and work it between the disc and flywheel,doesn't take much to pop it loose.

Help with clutch problem

StevenT

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old

Well-known Member

Tx Jim

Well-known Member

Bob in SD

Member

old

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FBH44

Well-known Member

Adirondack case guy

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jm.

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showcrop

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Bob in SD

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mkirsch

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old

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Trkr

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