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Message: <blockquote data-quote="bobbie-g" data-source="post: 99905" data-attributes="member: 26"><p>Glad the square shaft is solid in the bellcrank. == OK, there is a really good chance that the missing rubber bushing is your issue. Here's an abbrev description of how the joysticks control the square-headed shafts: The spring-loaded plate (12 in your parts layout) has two bars (19) that attach underneath. With no hand pressure on the joysticks ("neutral" position), the pair of rollers (44) at the end of each bell crank are against the bars (19), which holds the bellcranks in their neutral positions (note: adjusting those bars will change the bellcrank position, which then will result in wheel creep or worse when the joysticks are in neutral, so don't adjust the bars casually!). Once either joystick is moved, the plate shifts sideways (because the rollers (44) bear on the bar and cause the plate to shift) against spring pressure, and the joystick that was moved causes the corresponding wheels to turn. But at the same time, the bar (19) has now moved away from the other set of rollers (44), so that bellcrank is no longer held in the neutral position and becomes very easy to move. Much easier to see, than to grasp this process from this description. At any rate, once a bellcrank is not held in neutral by the rollers/bar, that side of the machine is very prone to run fwd or back without positive joystick control. You machine doesn't have good joystick control due to being missing that rubber bushing, which puts lots of slop in that linkage. Once you move the right side joystick, the left bell crank is no longer held in neutral. And since it has no good linkage to the joystick, it sort of moves where it pleases and the left wheels jerk around without good control. Whew, this may have you even more confused! Sorry for the longwinded monolog. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /> ---Bobbie-G</p></blockquote><p></p>

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