There are 5 places where the system can be worn. In the bearing at the end of the shaft going into the box. This ball bearing is responsible for holding the shaft on its axis. When rotating the steering wheel (that 1/4 turn) the shaft must not move in and out of the box at all. Put a mark on it to see if it is that bearing then turn the wheel. The mark should go around not in and out as it goes around. The bearing cap nust be tight to assure this is correct. The worm and sector gears can be worn. If they are there will be play no matter what else happens. New or good used gears are required to fix it. The sector gear can be loose on its shaft. Key way I think. The sector shaft can be loose in its upper and lower bushings. New bushings and possible new shaft to get clearance at .0015 to .001" if possible. The steering arm can be loose on the sector shaft. Some have a woodruff key, some are a tapered square shaft. Remaking the key pocket, and the arm slot to fit a larger key is a good fix. Ball joints and tierods need to be looked at, but I assume it is not that. I hope this helps. Jim
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Today's Featured Article - Oil Bath Air Filters - by Chris Pratt. Some of us grew up thinking that an air filter was a paper thing that allowed air to pass while trapping dirt particles of a particles of a certain size. What a surprise to open up your first old tractor's air filter case and find a can that appears to be filled with the scrap metal swept from around a machine shop metal lathe. To top that off, you have a cup with oil in it ("why would you want to lubricate your carburetor?"). On closer examination (and some reading in a AC D-14 service manual), I found out that this is a pretty ingenious method of cleaning the air in the tractor's intake tract.
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