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Make sure you read and understand the instructions on how to properly change the pinion yoke on the "489" case third members (IE pinion shaft crush sleeve preload) If you do not know how or have the proper tools to do that correctly take it to a shop that does



John, I will check what the letter is this evening.

Cab, I have been spoiled on this. When I was dirt racing with a 9" the builder always set it up with a crush sleeve, then removed it and replaced it with the correct shims. Yoke changes were simple and painless. Guess I'm back to having to be careful again. I have done it in the past but may need to read up on it again as a refresher course.



the problem with the 489 is you can't pull the crush sleeve out from the yoke end , you have to pull the carrier and the pinion to change it .

2 reasons why 489's are the least desirable , the cone type sure grip and the crush sleeve .....



Thank goodness they came up with the solid spacer for the 489 cases. Cone style sure grip =