Docmason 4 #1 Posted March 11, 2021 Replace drive belt and pulley. There is a brake for the pto mine is into the brass rivets. Is there necessary to have it? Secondly when I pulled the part of the pto off it was steel to steel. Is there supposed to be like a brake pad glued to the piece I took of with the bearings in it . Thank you for your help 1 Share this post Link to post Share on other sites
JAinVA 4,629 #2 Posted March 11, 2021 (edited) The brake pad was considered a necessary safety item. It stops the mower blades from turning when the PTO is disengaged. The PTO does not run steel to steel. There should be a friction disk bonded or riveted to engine side of the PTO assembly. Edited March 11, 2021 by JAinVA Share this post Link to post Share on other sites
haydendavid380 759 #3 Posted March 11, 2021 Interested to know as well. My B80 is missing the brake. 1 Share this post Link to post Share on other sites
Stepney 2,332 #4 Posted March 11, 2021 The brake came around the 1973-74 model year I think as to comply with safety regulation. The electric PTO never seems to have a brake in later years though.. Older models never had one. And frankly, the brake is of little use considering how small it is and that you'd have to throw out the clutch lever as you were having some sort of accident.. I'm not the type to do away with safeties but frankly it's not much of one. And it'll work fine without it. But all you need is a section of friction material and a few rivets. Any clutch shop could set you up easily, or order a sheet from McMaster Carr. "The piece with the bearings" is the clutch bell. That should be smooth finished steel on the face. The clutch material is epoxied to the flat face on the engine side of the assembly. You can buy new discs from Toro or sponsors here. Share this post Link to post Share on other sites
Lee1977 6,894 #5 Posted March 11, 2021 (edited) They used a thicker backing plate on the older C-series tractor if putting a new clutch plate on an older sleeve it will ware out the c-clips that hold the sleeve in place. Been there and done that fixed it with a spacer behind the clutch disk. It was a real pain to get clutch disk, c-clips and spacer all lined up. I later replaced to a newer sleeve and removed the spacer. I'm not sure what years the change was made, I do know the 300, 400 and 500 have the thinner clutch disk [/url The old clutch disk measures 3/16" and the slot in the old sleeve measures 3/16" from the end. Don't have a new clutch plate off to measure the thickness of the steel plate, but the spacer I made measures 3/64" thick. The problem with the old sleeve and new disk is you could not tighten the clutch disk all the way back to the pulley causing it to wear on the c-clips. Edited March 11, 2021 by Lee1977 Share this post Link to post Share on other sites
