Shoulder Bolt

While i was replacing the right wheel and assembly i decided it was best to replace the left wheel also. unscrewed the bolt that acts as an axle saving the cog that drives the wheel Replaced the wheels with original cogs and inserted and tightened the new bolts (axles).
The schematics available on this site helped me determine exactly what parts I needed. They arrived within a week.

I lightly tapped on a flat blade screwdriver with a ratchet to unscrew the broken piece of the old axel from the mounting plate. Then just inserted new axle (shoulder bolt) into the wheel and screwed it into the mounting plate. all done in about 5 min.

Replaced all parts on wheel assembly

ordered new wheel mount and axel bolt. Easier to replace than I'd hoped!

I remove the old pivot bracken and replaced it with the new one. Then I bolted on the wheel with the new shoulder bolt.

Shoulder bolt cracked at end of thread. And stepped washer was also damaged. Got replacement parts installed and lawnmower ran well afterwards.

The original bearings were totally worn out, the plastic sleeves were gone completely, the rear wheels were moving around and causing the gears inside the wheel to misalign and grind and wear out quick. I replaced the bearings and bushings to get rid of the slop, the bearing retainer just made the job easier so I could replace the assembly and did not have to remove the old bearing. It goes together just like the parts drawings on the website. I had already replaced the wheels/drive gears and pinion gears prior and that did not solve my problem. Mower is 9 years old and now nice and smooth just like new for around $45 (I have to give youtube a little credit)

Removed the wheel and the pinion and bearing housing. Pressed the new bearing into the new bearing housing and then then pressed in the fiber sleeve into the bearing housing. Install the new bearing housing into the wheel bracket. Installed the pinion spacer washer and then the pinon gear. and installed the snap ring retainer.
Installed new wheel and axle bolt with the new spacer washer. Note: I had just installed a new pinion gear a few days before.
Works ok so far. No pinion gear jumping on the wheel gear. Suspect the bearing and the fiber sleeve for the drive shaft from the transmission was worn causing the skipping problem on my Toro personal pace mower.

Removed wheel bolt, remove arm pivot and replaced with new parts

Removed rear wheels
Removed and replaced pinon gears and other parts as needed
Replaced new rear wheels