Tranny knock in reverse and 1-2
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is it the trans, or the t-case? The NP231 t-case has a snap ring on the rear output shaft that likes to fall off..... and then the parts walk around in the case. Makes some interesting noises.
To check it, drop the rear driveshaft, pull the tailhousing off the t-case (three or four bolts) check and see if the snap ring is still there. Should be on the shaft, right by the bearing. (it will be obvious when you have it apart.)
To check it, drop the rear driveshaft, pull the tailhousing off the t-case (three or four bolts) check and see if the snap ring is still there. Should be on the shaft, right by the bearing. (it will be obvious when you have it apart.)