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How did this happen?

Discussion in 'The Hokey Ass Message Board' started by str8enough, Jun 9, 2009.

  1. str8enough
    Joined: Mar 17, 2008
    Posts: 26

    str8enough
    Member
    from Omaha, NE

    I recently had the rear end in my Galaxie rebuilt. I had new gears (Speedway Motors) bearings and a posi unit installed. The guy rebuilding it for me had a hard time getting the gears to leave the correct pattern, he didn't care for the end result, but we put them in anyway. I drove my car for a week, maybe 100 miles, the rear end had a howl, which it had before being rebuilt. On memorial day I made a beer run with a buddy, i got on my car a bit, had a rolling start (did not drop the clutch)and went through the gears. When I let off there was a loud bang and then grinding gears. The pics shown is what I found, anybody have a clue what would cause this? any info will be greatly appreciated
     

    Attached Files:

  2. 3Mike6
    Joined: Jan 2, 2007
    Posts: 704

    3Mike6
    Member

    I'm thinking you anwered your own question...

    "The guy rebuilding it for me had a hard time getting the gears to leave the correct pattern, he didn't care for the end result, but we put them in anyway."

    Just my thoughts.
     
  3. Malcolm
    Joined: Feb 9, 2006
    Posts: 7,873

    Malcolm
    Member
    from Nebraska

    Nice rear end...
     
  4. Da Tinman
    Joined: Dec 29, 2005
    Posts: 4,227

    Da Tinman
    Member

    yep looks like you need another guy to do your rears. It would appear that your guy should have used a shim or 2 to get the pinion moved back to the sweet spot.
     

  5. Brad54
    Joined: Apr 15, 2004
    Posts: 6,015

    Brad54
    Member
    from Atl Ga

    I've never seen main caps fail like that on a 9-inch.
    -Brad
     
  6. Malcolm
    Joined: Feb 9, 2006
    Posts: 7,873

    Malcolm
    Member
    from Nebraska

    Joe just found out what the culprit was and the reason they couldn't get a good 'pattern' on the gears.

    Hopefully he'll get back on here and explain....
     
  7. New gears should never make noise like the old ones !!! >>>>.
     
  8. James427
    Joined: Apr 27, 2008
    Posts: 1,740

    James427
    BANNED

    Were the gears a matched set?
     
  9. mopar210
    Joined: May 18, 2008
    Posts: 392

    mopar210
    Member

    I have done many rear diffs in my time , looks to me like like tha carrier bearings were not seated in the carrier , the one adjuster ring has been hogged out , probably from the carrier moving forward , rearward etc.... This had to have a very loose assembled pre-load , back lash had to be about a foot . Rears are fairly simple , just be within specs and it will last a long long time .
     
  10. Malcolm
    Joined: Feb 9, 2006
    Posts: 7,873

    Malcolm
    Member
    from Nebraska

    Yes, brand new set.
     
  11. RAY With
    Joined: Mar 15, 2009
    Posts: 3,132

    RAY With
    Member

    Set up hundreds of ford 9 inch. Your unit was not set up correctly and as stated above -the back lash was out of site and when you got on it the ring gear was looking for a place to go.
     
  12. billbrown
    Joined: Dec 24, 2007
    Posts: 595

    billbrown
    BANNED

    how in the fuck did you do that.
     
  13. ... ok, so what was the culprit, 9 - 1/4" ring and pinion ?
     
  14. Have him explain, Inquiring minds want to know. Curious that you also stated it howled before and after ......
     
  15. BootleggerJim
    Joined: Dec 14, 2007
    Posts: 202

    BootleggerJim
    Member
    from SC

    He might have got the caps mixed up, or maybe set it up blindfolded.....
     
  16. kwoodyh
    Joined: Apr 11, 2006
    Posts: 641

    kwoodyh
    Member

    Yeah do it right the first time, so you are saying an experienced, professional mechanic went ahead and let you assemble the rear after he knew it wasn't right? And it was howling when you drove it? Were you hoping it would just correct itself, or maybe the 9" ferry's were going to fix it while you slept? Feel for you man, bad deal all around! Bottom line is the 3d member wasn't set-up right!
     
  17. landseaandair
    Joined: Feb 23, 2009
    Posts: 4,475

    landseaandair
    Member
    from phoenix

    The fact that it let go when you got off the throttle along with the original howling leads me to believe the nut on the yoke came loose and it eventually swallowed the pinion.
     
  18. phukinartie
    Joined: Oct 8, 2008
    Posts: 965

    phukinartie
    Member


    Why does that sound dirty to me? :D
     
  19. Zombie 51
    Joined: Feb 18, 2009
    Posts: 284

    Zombie 51
    Member
    from New York

    I blame terrorists
     
  20. Abomination
    Joined: Oct 5, 2006
    Posts: 6,702

    Abomination
    Member

    Thanks. Yours is pretty cute, too. ;)

    ~Jason

     
  21. MBog
    Joined: May 2, 2006
    Posts: 553

    MBog
    Member

    Rookie is how! How do you "not" get the proper pattern on a 9 inch...find a new guy
     
  22. Okay, for the last time; I don't care what that other thread said, you can not lubricate a rear diff. with dryer sheets!
     
    Last edited: Jun 9, 2009
  23. str8enough
    Joined: Mar 17, 2008
    Posts: 26

    str8enough
    Member
    from Omaha, NE

    The guy that rebuilt the rear end has 30+ years doing this shit, he had said this is the first 9' that he's ever had a problem setting up. He also said the the back lash was set at .008", and he marked both caps with a punch so he wouldn't get them mixed up
     
  24. BootleggerJim
    Joined: Dec 14, 2007
    Posts: 202

    BootleggerJim
    Member
    from SC

    No bull this time, the crush sleeve was not installed right.....Not crushed enought or put in front of the bearing, not between them......
     
  25. Dan10
    Joined: Aug 14, 2007
    Posts: 386

    Dan10
    Member
    from Joplin

    If he said he did not like the way it went back together, why did you agree to take it and not wait for it to be done correctly?
     
  26. MyRoaddog
    Joined: Feb 5, 2009
    Posts: 27

    MyRoaddog
    Member
    from Tampa Fl

    Even a person who has been doing this for 30 years can make a mistake. The biggest mistake was installing it in the car without getting the gear pattern correct. The last time I had one that I could not set up, I threw the case out and used another one. They are not hard to set up, they just take patience. <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" /><o:p></o:p>
    <o:p> </o:p>
    The bad news is that that whole thing is a boat anchor now. And swallowing the pinion does sound dirty! :)
     
  27. stealthcruiser
    Joined: Dec 24, 2002
    Posts: 3,748

    stealthcruiser
    Member

    Global Warming..................
     
  28. theHIGHLANDER
    Joined: Jun 3, 2005
    Posts: 8,571

    theHIGHLANDER
    Member

    I've done so many I can damn near do that.

    I dunno, I like my pinion swallowed:eek:


    You must have got a mixed up set from Speedway. There'll be another like it soon.
     
  29. propwash
    Joined: Jul 25, 2005
    Posts: 3,858

    propwash
    Member
    from Las Vegas

    were you having these problems BEFORE the present administration took over??????

    dj
     
  30. Deuce Roadster
    Joined: Sep 8, 2002
    Posts: 9,519

    Deuce Roadster
    Member Emeritus

    I NEVER use ring and pinion gears for a 9 inch Ford that were not made by FORD.

    I know ... Ford does not make them anymore :( ... and even Ford Motorsport is made by someone other than Ford :eek: ... but with a little looking, you can still find NOS 9 inch Ford ring and pinions ... for reasonable money.

    I would rather use a set of decent used Ford gears than a new set of the junk still there now. :D
     

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