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Join Date: Oct 2009
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Pinion gear rubbing differntial case
Got almost 120k on the truck. Bought it with 95k about a year ago. The speed sensor went out so I was going to change the diff fluid while I was at it. Pulled the case and got these wear marks on the case. No gears are chipped or broken but it looked like maybe the very end of some of the pinion teeth might have worn down from rubbing. What causes this?
Also, the "grooves" were light and almost couldn't feel them on the top but they were pretty pronounced and enough to catch a finger nail on them toward the bottom and close to the pinion.
Mods: Nitto Trail Grapplers, Diamo 17 Karat wheels, Red-head Steering box, Autometer gauges, Tru-Cool #4739 trans cooler, BFxenon HID lights
'03 Mustang GT
Mods: A bunch. --> Clicky