2017 9.75 rear diff fluid change

2017 9.75 rear diff fluid change

This is a discussion on 2017 9.75 rear diff fluid change within the F150 Ecoboost Maintenance forums, part of the F150 Ecoboost Garage category; Changed the fluid but I'm noticing that there is a hole in the diff that looks like it should have a bolt that goes through ...

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  1. #1
    Ecoboost Veteran mj0528's Avatar

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    2017 9.75 rear diff fluid change

    Changed the fluid but I'm noticing that there is a hole in the diff that looks like it should have a bolt that goes through the front and through the rear (part of diff that is facing the front of the truck)

    I used a lube locker gasket and cleaned the RTF very meticulously and no other leaks. I also noticed this after a drive as it was dry before the drive.

    I don't recall a bolt longer than others so I'm wondering if RTF needs to be inserted. Stuck a piece of paper towel to make sure I'm not crazy

    Sent from my SM-G950U using Tapatalk

  2. #2
    Ecoboost Pro Mulyhuntr's Avatar

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    Isn’t that just the back side of where the cover bolts thread in?

  3. #3
    Ecoboost Veteran mj0528's Avatar

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    Quote Originally Posted by Mulyhuntr View Post
    Isn’t that just the back side of where the cover bolts thread in?
    There is one that has a whole on the backside which I thought was odd

    Sent from my SM-G950U using Tapatalk

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  5. #4
    Ecoboost Veteran mj0528's Avatar

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    Paper towel is dry as a bone. Looks like I may have not dried it up.

    The lube locker will make for an easy change next time

    Sent from my SM-G950U using Tapatalk

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