Oliver 550 diesel clutch assembly

Farmer Broome · Feb 5, 2021

Hello,
I am posting a few pictures of the clutch assembly on my 1961 Oliver 550 Diesel that is being restored I have never had this tractor running and know nothing of its history. It shows about 6000 hrs. on the odometer and I am pretty sure the clutch is original. I am thinking that the flywheel and pressure plate are okay and that I can just clean them up with fine sandpaper. The friction disk is worn some but is not scarred up so I might get away with just soaking it in brake cleaner. What do you think?

Farmer Broome

Farmer Broome · Feb 5, 2021

(quoted from post at 06:10:55 02/06/21) Hello,
I am posting a few pictures of the clutch assembly on my 1961 Oliver 550 Diesel that is being restored I have never had this tractor running and know nothing of its history. It shows about 6000 hrs. on the odometer and I am pretty sure the clutch is original. I am thinking that the flywheel and pressure plate are okay and that I can just clean them up with fine sandpaper. The friction disk is worn some but is not scarred up so I might get away with just soaking it in brake cleaner. What do you think?

Farmer Broome

Farmer Broome · Feb 5, 2021

Farmer Broome · Feb 5, 2021

Farmer Broome · Feb 5, 2021

Farmer Broome · Feb 5, 2021

rustred · Feb 5, 2021

First thing you better find out where all that oil is coming from. Rear seal
leaking ? Looks like the pressure plate is junk as it looks like the hub is
moving back and forth on those 3 rivets. Check it yourself as it’s hard to
see in picture . Plus there is some cracks in it. As for the disc it would do
for a while , but it’s too oil soaked. To tell the disc wear you look at the
rivets. If they are ready to start rubbing the plate then it’s done. You must
clean those friction surfaces up with brake clean then have a look at the
flywheel to check it also. It needs a new pilot brg. And parts are not cheap
nowadays.

Tgrasher · Feb 5, 2021

It all looks good but the real test is if the pressure plate springs are up to par. If when it was still together, it took a nominal amount of effort to push in,
your probably ok. A service manual might give the ft lbs it should be but to test it by the book takes a special tool. I'm 200 lbs and if on a 10" clutch the
fingers hold me when the pressure plate is laid on the floor, it's good.

JD in da UP · Feb 6, 2021

Photo shows pto drive hub welded at rivets. If you want to have a good usable s55,, check the condition of the pto clutch, etc. new pressure plate and
a trip to the machine shop for the flywheel. Good pics!

caterpillar guy · Feb 6, 2021

Looks to me like the pp and disk are burnt from slipping either to back up to things or maneuvering around things close like with a loader.

Oliver 550 diesel clutch assembly

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