ford 800 clutch trouble?

Birdman6710 · Mar 16, 2014

we have a 56 model ford 800 its my fathers tractor
and baby. the tractor seems to roll forward or backwards for several seconds after placing it in neutral you can get it to stop if you are quick with the breaks but still this is a hazzard, and did not used to do this. Is it the clutch going out? will it eventually not stop at all if the clutch goes out completely? I would like to get this fixed for my father for fathers day without him knowing...please advise any thoughts.

andyin ct · Mar 16, 2014

Could be too thick of oil in transmission. Mine does it too.

Frankmn · Mar 16, 2014

normally when the clutch fails the tractor will not move or will not move under a load. I concur with the thick oil answer. Is it cold outside?

Bob · Mar 16, 2014

Are the tires heavily weighted with CCl or other fluid?

Fordfarmer · Mar 16, 2014

I will also say it's likely from thick oil. Current recommendation is to use the same oil in the transmission as the hydraulics - NH 134D or equivalent.

Steve@Advance · Mar 16, 2014

You don't by chance have a brush hog on the PTO? The coasting action will continue to drive the transmission after pushing the clutch.

paul · Mar 16, 2014

It is not the clutch.

Is it a 4 speed, 5 speed, 5 speed live pto? Would be 840, 850, or 860 model.....

If it is cold, the thick oil is possible. If this is when it is hot and worked hard, not as likely.

If it is the 840 or 850 model, then using it with a pto running as mentioned will cause this, you would need a ORC on the pto.

The 100 series brakes were not real good to start with, and well worn don't stop a tractor well at all. So, could easily be worn out brakes, or at least they need to be adjusted?

If you are brush hogging with it or other pto work, I would guess it is that non-live pto issue?

Paul

Birdman6710 · Mar 16, 2014

PTO is not being used, it has to be engaged to work so I am guessing this is not a live? we have not used our brush cutter in a while now..I would bet it is the thick oil issue, and you are saying transmission oil?
how often would you say it should be changed.
you are right on the brakes they are crap but work ok if you stand on them..haha

Birdman6710 · Mar 16, 2014

it is a 5 speed, and it does it cold or warm temp outside, I am not sure if it does it after being worked hard for an hour or so or not that might be something to check..it does not really get used much I would say an hour or 2 a month.

Fordfarmer · Mar 16, 2014

I've had an 850 and two 860's...and a cousin has an 850. All of them would do this with 80w90 in the tranny. Still do it some in cold weather with 134D, but not as bad. As you said it happens even in neutral, it is NOT from the inertia of PTO driven equipment.

LeoinMI · Mar 16, 2014

Definitely thick oil. You probably have 80/90 w oil in the tranny which, when cold, causes the tractor to move (even in neutral) until it is warmed up. I assume you are experiencing cold weather right now where you live. If the tractor sits for any amount of time that oil gets real thick and takes a while to warm up. My Ford NAA moves when it is in neutral during cold weather. I just drive it until the oil warms up and thins out a little and all is good. You can do as the others have said and switch to HD 134 and that should help eliminate the problem.

ford 800 clutch trouble?

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