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Larry: The control wheels are held on to the shaft with close tolerance
roll pins that use a pin keeper in side the wheel. There are two of these pins
in each wheel. Actually, the wheels are held together with a pair of
cast/machined hubs and the hub halves are held to the shaft by the pins.
If you take the three screws out of the hub that
holds the plastic covers on, you can see the pins inside. You can then move the
wheel and see if the slack is caused by hub looseness or the universal joint. If
it is the universal joint (they are over $150 each from UNIVAIR) it may be
easiest to swap the left and right control wheel and shafts. The shafts and
universal joints are held together by #1 taper pins. The taper pins are easily
removed by loosening the nut and pressing them out using a C clamp and a socket
over the non threaded end of the pin.
Let us know what you find.
Lynn
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