Start with checking the tires,,,,,,,, then the wheel bearings,,,,,,,,then excess horizontal fore n aft end play in the steering shaft (front bearing end cap shims),,,,,,,,then wear in the worm n sector gear (adjusting eccentric bushing).
1) It helps if the front tires are matched in size, style and air pressure.
2) Next, its necessary that BOTH front wheels have their bearings properly adjusted down via removal of the grease cover then setting the preload using the castellation nut and cotter key etc.
3) Next, see if the steering shaft has excess horizontal fore n aft end play??? If so, you may be able to help that by removing the sheet metal (crown/nose cone) and get to the top of the steering pedestal and remove the front steering shaft bearing end cap (2 horizontal bolts) and remove some of the shim gaskets to take up some of the end to end horizontal play.
4) If that all dont help, the eccentric bushing may need adjusted or it or where it fits down into the pedestal simply worn/wollered out.
5) To adjust the eccentric bushing (to move sector gear closer against worm) you have to remove the top grease cover off the pedestal (4 cap screws I believe),,,,,,,,,,,,clean out all the gunk n dirt n grease,,,,,,,,remove the vertical lock set screw in the base of the eccentric bushing (in one of the half moon stops),,,,,,,,,use a bar or drivers etc to rotate the eccentric bushing to move the sector gear over closer against the worm,,,,,,,,,,,replace the vertical lock set screw into another open half moon slot in the base.
NOTE AND CAUTION: Since most worm and sector wear is in the straight ahead position, you CAN NOT set them too close together there, or else then its too tight n binds out near the turns ends.
6) I refill the gear box with a witches brew of grease plus 140 or better yet 250 Weight Gear Lube and a lil STP or Lucas additive if I have any handy. Some guys use heavy synthetic gear lube also.
Nowwwwwwww if the eccentric is just too worn or the bore it fits into worn out, you may have to have an eccentric mande up or some machine work.
Give all this a try n post back your results. Let me know, Good Luck n God Bless.
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