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Follow these insructions from FAQ:
Adjustment of Cable. The kickdown cable has no adjustment at the transmission end, it's fixed. All the adjustment is under the hood, at the throttle spindle. To adjust, loosen the cable housing jam nuts until there's plenty of slack in the cable. Pull on the cable, then let it snap back in. Listen carefully, and you'll hear the cam that the cable is attached to in the automatic transmission click up against its stop. Try this a few times, so you'll know the sound. Now adjust slack out of the cable, keep testing by pulling and letting go of the cable, always listening for the click inside the transmission. As you take more and more slack out, there will be a point where you've tightened the cable just enough so the cam inside the transmission can no longer click up against the stop, because the tightened cable won't let the cam go back far enough. When you reach this point where you just stop hearing the cam click against its stop, the cable is adjusted properly. [Don Foster] Loosen the cable to soften the shifts, and shorten (or tighten) the cable to cause the tranny to shift harder and at higher RPMs. Be sure to keep notes of which way you adjust the cable and by how much so you can restore it to original position if you're unhappy with the results. "Loosening" the cable means to adjust the cable housing (outer sheath) so the inner core is looser around the throttle spool. This means adjusting the housing (outer sheath) TOWARD the throttle spool. This has the effect of providing a bit more "slop" in the core, which is wrapped on the spool. Thus, it becomes looser. If you want to tighten the cable, adjust the cable housing so it backs away from the throttle spool, effectively pulling the core tighter. Normally you adjust in turns or "flats." A flat is one flat on the hex head where you fit the wrench, six per full turn.
I just did it this afternoon and my 745 shifts as smooth as silk.
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Leon Ramseur, Gastonia, NC: 1991 940, 1990 760, 1990 740 & 1990 745
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