Cockshutt 35 - Blackhawk

[Albers]

I have a Cockshutt 35 Blackhawk that the clutch seems to have stopped engaging on. You can start it in gear and everything is fine, but it will not engage into a gear other wise. I had the tractor out and took it to a show about 6 weeks ago and everything seemed fine. Any idea's on what this could be and how to diagnose it?


thanks

 

[JMS/.MN]

The clutch does not DISENGAGE because it is stuck to the flywheel. Might get lucky by spraying some penetrating fluid on it, some lock down the clutch pedal, and over time it may release. Some try to pry it apart, a split may be necessary.

 

[krm]

Take the inspection cover off the top of clutch and maybe you can tell what is wrong.

 

[Steve@Advance]

So it's more like the clutch fails to release? If the pedal still feels normal, it is probably stuck, rusted to the flywheel.

Once you get it started in gear, can you stop the tractor without killing the engine? As in it will not release at all? If so, very carefully put it in a mid to high gear, start it up, drive it with the clutch pedal held down. Goose the throttle, hit the brakes, what you want to do is stress the drive train to try to pop the clutch loose from the flywheel. If that doesn't work, sometimes you can access the edge of the clutch disc through the access cover or the starter hole, reach in with a knife blade, clutch pedal blocked down, pry the disc lose from the flywheel and pressure plate. Once it's loose, block the clutch down when it's stored.

If the clutch is dragging, as in once it's in gear you can stop with the engine running, there are 2 possibilities. Ether there is too much freeplay in the clutch pedal (needs adjusting). Or there is something wrong with the pressure plate, it is not releasing properly.

 

[Albers]

I had to kill the tractor. Thanks for the information. Hopefully it is only minor since it was working about 6 weeks ago and will be an easy fix to get apart. The tractor is stored inside, but we have had a lot a rain lately and the building does get moisture in it. It probably rusted together.

 

[Bruce from Can.]

My dad's main power plant tractor was a 35 Cockshutt and when ever this happened to our tractor it was always the thow-out bearing. Dad's 35 would always work just fine, till it didn't. Easy tractor to split.

 

[J. Schwiebert]

If it will not release, find a good log chain and a tree. Hook the chain up to the tree, back the tractor up to the end of the chain, put the tractor in low gear about 1000 RPM for you and with the clutch petal down it will pop loose. If that is not what you are trying to tell us, take that cover off and inspect the parts. Have not looked at a 35 clutch in probably 40-45 years, but easy to do.

 

[olddog]

Helped a neighbor with his......
There's quite a distance between the trans and the clutch housing,
and it seems there was a sleeve over the trans input shaft up to the
throwout bearing, (mebbe with an another bushing/bearing in it?), to the rear
that was set up. A little skunk P on that shaft and bearing released it.

 

[DENNIS MIN]

J,

Perhaps reverse with the chain beneath the tractor?

D.