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Where do you fill nine inch

1K views 6 replies 6 participants last post by  rod051 
#1 ·
Are you supposed to fill the nine inch from the bung at the back of the diff or the bung on the side of the carrier or do you have to fill both, the one on the side uses a 3/8 rachet with no socket it just fits in a square section
 
#3 ·
Never seen a 9" with a fill hole on the back, only a drain on the bottom. I fill mine from the hole on the side of the carrier until it just start running out. Make sure your car is flat. I think the carrier bung/screw requires an allen key to remove. Yours could be different.
 
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