Noise after Pinion seal replacement
#11
I just finished rebuilding my 8.8 with new bearings, etc. Ford's preload specs are as follows:
Now when I set the preload, I did so with only the pinion gear in place. Now that it's back together, with the carrier and axles installed, I checked to see if there was any change. But with new fluid, and all my bearings being new, I found absolutely no increase in rotational resistance.
If you're not going to replace the bearings, you should be able to get away with just installing a new crush sleeve and setting the preload to the "used" spec. Overtightening the pinion nut renders the old crush sleeve useless.
Pinion bearing preload with used bearings to 0.9-1.6 Nm (8-14 lb-in), and new bearings to 1.8-3.2 Nm (16-28 lb-in.)
If you're not going to replace the bearings, you should be able to get away with just installing a new crush sleeve and setting the preload to the "used" spec. Overtightening the pinion nut renders the old crush sleeve useless.
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