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Why would a pinon nut back off?

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  • #1

    Why would a pinon nut back off?

    These gears were just set up, and it's been making a wicked howl since about day one. I haven't pulled the gears out yet, but I did get the driveshaft off and the pinon nut was so loose I could tighten it some w/ my fingers!

    What holds the pinon nut snug?



    Are my gears going to be trashed when I pull this apart?
    Ronald Reagan:"Government's view of the economy could be summed up in a few short phrases: If it moves, tax it. If it keeps moving, regulate it. And if it stops moving, subsidize it."

    Homer: "Bart...there's 2 things I know about women. Never give them nicknames like "jumbo" or "boxcar" and always keep receipts...it makes you look like a business man."
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  • #2
    Either it never was tight or the old nut was reused.
    "It's another burrito, it's a cold Lone Star in my hand!"

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    • #3
      Re-using the lock nut for one . Not having the bearing race set all the way is another . And finally leaving the preload too lose and the bearings wearing crazy fast . Thats all that I can think of that will leave you with a loose pinion , now back to my beer .
      The only difference between a tax man and a taxidermist is that the taxidermist leaves the skin. -- Mark Twain

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      • #4
        id bet money that the crush sleeve was re-used and or preload was not set.
        And yes, dont use those gears again.

        pm me man, havent talked to ya in a while
        Ring and pinion specialist

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        • #5
          Originally posted by greenbullitt View Post
          id bet money that the crush sleeve was re-used and or preload was not set.
          This

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          • #6
            if you know what's going on, a crush collar and a new nut is not necessary. i set rotational pre-load and tack weld the nut.
            pinto gt with wood trim

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            • #7
              I took it to a guy who specializes in those, and he ran down the nut ( a new one he had) & determined that it needed a new crush collar. He's taking it apart today, and he'll have back to me today. I'll update.
              Ronald Reagan:"Government's view of the economy could be summed up in a few short phrases: If it moves, tax it. If it keeps moving, regulate it. And if it stops moving, subsidize it."

              Homer: "Bart...there's 2 things I know about women. Never give them nicknames like "jumbo" or "boxcar" and always keep receipts...it makes you look like a business man."

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              • #8
                ask him, or any other engineer what purpose the crush collar serves..........
                pinto gt with wood trim

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                • #9
                  Don called me this morning to say that the reason the collar had crushed beyond where it was supposed to is b/c the bearing that's pressed on the pinon gear had become loose & was sliding around.
                  Ronald Reagan:"Government's view of the economy could be summed up in a few short phrases: If it moves, tax it. If it keeps moving, regulate it. And if it stops moving, subsidize it."

                  Homer: "Bart...there's 2 things I know about women. Never give them nicknames like "jumbo" or "boxcar" and always keep receipts...it makes you look like a business man."

                  Comment

                  • #10
                    Originally posted by barronj View Post
                    Don called me this morning to say that the reason the collar had crushed beyond where it was supposed to is b/c the bearing that's pressed on the pinon gear had become loose & was sliding around.
                    no comment
                    Ring and pinion specialist

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                    • #11
                      Originally posted by greenbullitt View Post
                      no comment
                      Ninja edit? send me a pm if you want.

                      He called again to say that b/c the old one had started to move, he doubted a new one would press on (wear on the pinon shaft?) & stick, so he's going to try to shim it.

                      Ultimately, he says my driving style will continue to break parts. I don't do hole shots or 6K dumps, but I do roll in to the throttle & break the 33's loose on occasion.
                      Ronald Reagan:"Government's view of the economy could be summed up in a few short phrases: If it moves, tax it. If it keeps moving, regulate it. And if it stops moving, subsidize it."

                      Homer: "Bart...there's 2 things I know about women. Never give them nicknames like "jumbo" or "boxcar" and always keep receipts...it makes you look like a business man."

                      Comment

                      • #12
                        Originally posted by barronj View Post
                        Ninja edit? send me a pm if you want.

                        He called again to say that b/c the old one had started to move, he doubted a new one would press on (wear on the pinon shaft?) & stick, so he's going to try to shim it.

                        Ultimately, he says my driving style will continue to break parts. I don't do hole shots or 6K dumps, but I do roll in to the throttle & break the 33's loose on occasion.
                        ill pm ya...no prob
                        Ring and pinion specialist

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