The Stovebolt Site Forums The Parking Lot Big Bolts T170 2speed rear axle fluid questions?

I would look at the old wear pattern on the splines to see how much it moved before. That should be visible on the male spline. Of course, the shaft will have to be out in order to see it. If the wear pattern indicates less than the 3/4 - 1 inch you see showing, all is well. My guess is it will be OK but its too easy to pull the shaft not to check it.