![]() ![]() ![]() If the same tongue jack is NOT at 0° at the start, It will either not lift high enough because it's run out of thread travel - or - not lower enough because it's also run out of thread travel. At the start.IF the crank rod threaded shaft is in the center (neutral or 0°) it will allow optimum lift height when fully turned clock wise. Too far off center left, or right, is what causes excessive slop, partially disengages worm gear travel and allow gear threads to miss some engagement at either end.Īlthough the Yanmar steering box is a little more complicated (sophisticated) than this.think of the entire assembly as working on the same principal of a trailer tongue screw jack. I think the simplest way is to disconnect the shaft from the pitman arm, remove the column, box and the dash panel at the same time and examine the entire assembly to see why there's so much play.Īdding (or removing) the shims align the worm shaft to the ball nut assembly and center the shaft column. Which is telescoped as lash (play) at the steering wheel. ![]()
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