It is held in place with a bolt. In this case the axle shaft spacer seems to have play up and down and side to side. Have located new pin and block, will check the differential case holes. The side and pinion gears look ok. This is a napco conversion but I don't think that makes any difference. There a pic of the spacer block and pin,carrier old and new pinion. Don't get why this spacer has so much play. By looking at the date on the ring gear I think someone was in the old girls rump before. We have had the truck since1974 so it was before that date. The wear on the ring and pinion look good and the side gears and pinion gears are good.
