Oliver 770 clutch problems

bberry

Member
My transmission clutch has been chattering. I narrowed it down to a cracked inner bearing race on the throwout bearing. I replaced it and went back together with it. I have stripped the pto and hydraulics off as I pull it. But now my whole assembly still chatters but in a sort of different way. What am I missing? I can see the throw out is not running in line but I have everything tight and lined up.
 
It's good. It's not making the noise like there's a bearing out. It's like the carrier is the problem
 
Our 88D standard did that. Had a bent PTO shaft. Apparently someone tried to pull the engine or something, and didn't remove the PTO first. Might be something to check out. Run it without the PTO in place.

Ross
 
I stripped the pto off before any of this but today I experimented by putting it back in either way it still does it. I'm going to tear it back apart tomorrow and go through the carrier.
 
Not many reasons to cause a clutch to chatter. One being the pressure plate springs are weak or broken. Two the clutch disk is oil soaked or warped from heat. Three depending on what type of clutch disk the unit has the dampeners are are worn or broken. And last is the flywheel has hot spots or hard and soft spots on it being blue in color as well as the pressure plate being warped with these same spots on it. Any one or number of these issues can cause chatter. Hope this may help in your diagnosis. Duane o.
 

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