The left side steering arm assembly is pinned to the steering knuckle shaft that comes up through the axle. That is often a point of play. Best way I've found to fix that is to drill it out and pin it with a larger pin to remove any play. Actually, I bought a taper drill and drilled it out to a taper and put in a tapered pin. I think it was a 5 or 6 taper? McMaster Carr has the taper drill and the pins.
You could drill it out to slightly more than 1/4 inch and make a new pin, but unless you go metric you likely won't find a 9/64 or 5/32 pin. Well maybe you can. Never tried.
Or, drill out the top of the steering arm assembly and plug weld the dang thing to the knuckle.
Of course, most steering play is in the gear box, so it's best to start there. New follower stud, easy steer bearing update, tighten up the gearbox cover bolt, etc.
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