I had to do some work on my 35-year old Snapper 21" walk-behind mower over the last couple of evenings and thought maybe some of you may find it interesting.
I have noticed over the past few months, most of the season, that I have had to chase the adjustment on the drive clutch as it appeared to not want to grab like it used to. Hint, that should have been more of an indicator looking back.
A couple of weeks ago the wife and I took off for a road trip and my son text me to let me know that it was no longer self-propelling. I told him I had noticed that and I would look at it upon arriving home.
Upon initial inspection I noticed that the main drive belt was severely worn, to the point that I could turn the blade (crankshaft) and the belt wouldn't turn. I tried to find one locally and no one had the exact one I needed. I found one a half inch shorter and a half inch longer. I ordered a 2-pack because I could get two belts online cheaper than I could purchase one belt locally and delivery was the next day. I thought I would pull it down and be ready to install the belt the next day while I cleaned the grass from the v-pulleys.
Upon disassembly I discovered the "actual" issue. The pivot plate and the adapters exhibited severe wear as well as the bearing in the driven pulley was "growling". The pulley was not available from any of my normal suppliers and although the other two parts showed in stock, I opted to just refurbish them all. Here they are bead blasted to begin the work.
The adapter is severely worn. almost to the bolt.
And the pivot plate is ovaled out quite badly as well.
The bearing is captured fully inside of the driven pulley and it appears to have a folder over or crimped edge joining the outer disc to the pulley. After giving it a think, I opted to cut chuck it up in the lathe and remove the inner folded seam with the thinking I could TIG weld it back on afterwards.
Out disc removed. I was surprised when I found that the inside was also a folded over edge securing the bearing. With the outer edge formed, I "assumed" the inside must have a snap-ring.
Well, I'm this far in, may as well not stop now and just knock the formed edge off securing the bearing as well. Using my 4-jaw to dial it right in.
Formed edge removed.
Scott, aka
@signcrafter ; these fancy EZ Driver's have so many uses. There's always the right size for whatever job is at hand.
Ya know,
@Grant Gunderson already purchased one, so you're next.....
Pressing the bearing out.
Nearly out.
With the bearing out, I discovered it was just a standard 6203-2RS bearing. Should be easy to find.
Old belt vs. the new belt that showed up the next day.
I also grabbed an SKF bearing on the way home so I have all of the parts now.
Some quick rough measurements to determine the next steps.
Stay tuned for more.