A few days ago I bent a mower blade and while I had it in the shop I worked on the steering. The wheel bushings and axles are worn but I wanted to see what I could do without new parts.
I started by greasing the steering sector and plate.
A washer was added to the inside of of each wheel to reduce friction and play. Again grease. Sorry no pic.
The good news is that the steering requires a lot less effort and is somewhat tighter. The play is in the sector so maybe that can be adjusted.
I was tempted to toss the bent blade but this is the only set I have that fits a 40" murray deck. A few minutes in the press put it back to useable and both got a new edge.
Funny in that this tractor has about the worst deck I own in that it does not have a single anti scallop wheel. Yet it does the bulk of my mowing. When I get a mower with a better deck going I may remove the deck and keep it for a yard tug.