Goprg
You don't have an S or T model which is good! So don't worry about the driver on the shaft, from the amount of use you describe that darkening is the urethane wearing off so its good you have a new roller coming. I would try to carefully clean the metal drive roller before installing the new urethane roller.
IMPORTANT when installing the new urethane roller, the long screw that holds it to the transmission casing must not be bolted down tightly as the roller needs to be able to flop back and forth in its little metal cradle that it sits in.
SO to prevent the bolt from falling back out after a few cycles you need to apply LOCK TITE to the screw threads before you install the roller back into the mechanism and tighten just enough that you don't see the little metal cradle bend or flex into the roller then STOP and let the LOCK TITE harden overnite before putting the machine back in use.
The bearing you are looking at does not need lubricating under the seal.
TO install the seal correctly, apply liqiud soap around its perimeter before pushing down into the cup flange where the old one came out.
My comment about the motor shaft was wrong for this model that comment applied to the 1964-69 mechanism where the motor actually drove the mechanism directly so forget it.
jet
You don't have an S or T model which is good! So don't worry about the driver on the shaft, from the amount of use you describe that darkening is the urethane wearing off so its good you have a new roller coming. I would try to carefully clean the metal drive roller before installing the new urethane roller.
IMPORTANT when installing the new urethane roller, the long screw that holds it to the transmission casing must not be bolted down tightly as the roller needs to be able to flop back and forth in its little metal cradle that it sits in.
SO to prevent the bolt from falling back out after a few cycles you need to apply LOCK TITE to the screw threads before you install the roller back into the mechanism and tighten just enough that you don't see the little metal cradle bend or flex into the roller then STOP and let the LOCK TITE harden overnite before putting the machine back in use.
The bearing you are looking at does not need lubricating under the seal.
TO install the seal correctly, apply liqiud soap around its perimeter before pushing down into the cup flange where the old one came out.
My comment about the motor shaft was wrong for this model that comment applied to the 1964-69 mechanism where the motor actually drove the mechanism directly so forget it.
jet





