MTFCA Forum

I've got a feeling my clutch part is shot... Can an experienced eye confirm?

May have been wrongly assembled or mismatched parts were used

I think I would take a look at the other parts that are directly under this clutch part to see what was grinding against it. Shouldn’t be that way unless they weren’t properly seated or something got loose and worked it’s way up against the part that’s shown.

Your damage does line up with the clutch disc drum and contact with the disc drum may have caused this. A variety of issues could have caused this: Incorrect combination of parts, loose disc drum, failed driven shaft (brake drum shaft), damage due to towing. There are a variety of transmission breakage/failure issues that occur on ‘26-‘27’s that only very rarely occur on earlier models.

Photo of an earlier transmission to show where the disc-drum lines up with the inside of the drive plate:

I see no damage inside... Someone has been in this transmission before me so it's possible they removed the other damaged parts. I don't find any broken bits or pieces laying loose.

Those missing pieces could have done it...

Looks like a half assed weld job and a spin in a lathe to try and clean it up!

Frank

I was thinking the same thing. I have a friend who bought a T at an estate sale. Very soon became apparent that the previous owner/builder didn't know much about Ts. Neutral quickly went away and the new owner found the bushing in the clutch plate was too tight on the transmission shaft and had gauled. I understand that it was a bear to get off as you can imagine. Not enough material was removed from the bushing during refitting, and there was probably more going on, but anyway, reinstallation somehow resulted in breaking the plate during that process. Seeing what Adam pointed out, With the bolt hole broken out on the brake drum and what appears to be weld on the plate, something bad occured in use in a previous life.

Dang, this car is testing me!

Why did you take it down? Was the clutch mis-operating? If it was working OK you could just put it back together and leave it as is. If it was not working well, you must then find out why. normally the clutch disk which fits the inside of the brake drum is toward that plate and the plate turns with that last disk, so no moving parts except the shaft at that point. If the metal is just worn without a crack you could just put it back together as is, or replace the worn part with a better one. It appears to me that whatever was causing the wear has already been corrected. The area circled in Adam's picture is the hole for one of the bolts which hold on the driven plate. Nothing missing there.
Norm

Norman Kling wrote: ↑

Sat Feb 23, 2019 5:18 pm

Why did you take it down? Was the clutch mis-operating? If it was working OK you could just put it back together and leave it as is. If it was not working well, you must then find out why. normally the clutch disk which fits the inside of the brake drum is toward that plate and the plate turns with that last disk, so no moving parts except the shaft at that point. If the metal is just worn without a crack you could just put it back together as is, or replace the worn part with a better one. It appears to me that whatever was causing the wear has already been corrected. The area circled in Adam's picture is the hole for one of the bolts which hold on the driven plate. Nothing missing there.
Norm

The car is undergoing a mechanical restoration, its worn out and is in need of a major overhaul.

There is a chunk missing in Adam's picture, some of the threads remain but I can see how a chunk like that being loose in there could cause major issues. This car has been the victim of many poor past repairs and it needs to be a reliable touring vehicle to suit my needs.