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14ff pinion HELP!!!!!!!!!!!!!!!!!

Discussion in 'The Garage' started by BamBamblazer, Apr 14, 2004.

  1. BamBamblazer

    BamBamblazer 1/2 ton status

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    Ok i am trying to put new gears in my 14 ff and i cant get the pinion to seat in the support. I have it in the support and started tightening it down and all was well. So i keep going and as i get to about an 1/8th of an inch from both bearings getting to the races it just stops and i cant turn it no more. It was going tight all the way till that point then it just got to where i cant moove it with an 12" breaker bar, but it still has play in it. Anyone had this problem. This is my first set of gears and i'm lost. /forums/images/graemlins/dunno.gif /forums/images/graemlins/ears.gif
     
  2. bluejeep

    bluejeep 1/2 ton status

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    Do you have any idea what a crush sleeve is or the mechanics of having one?
     
  3. MTBLAZER89

    MTBLAZER89 3/4 ton status GMOTM Winner

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    a 12" breaker bar /forums/images/graemlins/histerical.gif sorry it takes about 300-400 lbft of torque to crush the crush sleeve. I used a 24" 1" drive breaker with a 3 ft piece of pipe on the end of it. I broke my 1/2" drive breaker doing mine /forums/images/graemlins/eek.gif Keep tightening until that slop is gone and keep checking the preload which IIRC is 20-30 inlbs
     
  4. willyswanter

    willyswanter 1/2 ton status GMOTM Winner

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    Lol yeah, I had a 3/4 drive breaker bar with 5 feet of pipe on the end. Just make sure you make very little adjustments each time and check the preload with an inch/pounds torque wrench because once it starts getting preload on it it rises quick.
     
  5. jjlaughner

    jjlaughner 3/4 ton status

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    hey guy I have a 3/4" drive set I use a 4foot bar on when I need too, if you need to borrow just let me know. I can get those backing plates from ya also. /forums/images/graemlins/waytogo.gif
     
  6. BAJA_BLAZER

    BAJA_BLAZER 1/2 ton status Author

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    The best way to do it is in a hydraulic press.
     
  7. willyswanter

    willyswanter 1/2 ton status GMOTM Winner

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    Negative, talk to any reputable gear shop and they will recommend against that. Now if you mean to just barely start the crush then sure you can do that, but still takes a ton of work to get it to the proper preload.
     
  8. spearchucker

    spearchucker 1/2 ton status

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    Or for the lazy people, a 3/4 inch breaker bar and a hydraulic jack under the end. /forums/images/graemlins/blush.gif
     
  9. BAJA_BLAZER

    BAJA_BLAZER 1/2 ton status Author

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    To each his own! The most reputable shop in San Diego, Pro Gear, recommended it, and it works well for me.
     
  10. crazykev4x4

    crazykev4x4 1/2 ton status

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    How do they do it with a press?

    Kevin
     
  11. 84_Chevy_K10

    84_Chevy_K10 Banned

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    [ QUOTE ]
    Negative, talk to any reputable gear shop and they will recommend against that. Now if you mean to just barely start the crush then sure you can do that, but still takes a ton of work to get it to the proper preload.

    [/ QUOTE ]

    I think he's talking about pressing on the pinion bearing. Of course you're going to press the bearing on.
     
  12. willyswanter

    willyswanter 1/2 ton status GMOTM Winner

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    Well the thread is about the crush sleeve, no one mentioned how to get pinion bearings on the pinion...
     
  13. BAJA_BLAZER

    BAJA_BLAZER 1/2 ton status Author

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    Put the assembled pinion and pinion retainer (pinion carrier) with the flange (drive yoke) in the press with the pinion gear down. Slowly press the flange on to the pinion splines crushing the spacer (crush sleeve) as you do. While doing this spin the retainer (pinion carrier) feeling for the correct preload. As you approach the correct “feel” back off the press and tighten the flange nut. If you have a lb. –in. torque wrench you can check for correct preload (25-35 lb.-in. for new bearings, or 5-15 lb.-in. for reused bearings) but most professionals just use the “feel” /forums/images/graemlins/thinking.gif method. Repeat the process until you get the correct preload. It is a lot easier to control the load your are exerting with the press than it is with a three-foot breaker bar and a cheater, and you’re working at bench level.
     
  14. MTBLAZER89

    MTBLAZER89 3/4 ton status GMOTM Winner

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    inch pounds not foot pounds. Either way you do it press or breaker bar be careful because once you over crush the crush sleeve you have to get a new one and start over /forums/images/graemlins/shame.gif
     
  15. BAJA_BLAZER

    BAJA_BLAZER 1/2 ton status Author

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    Preload is measured in Inch Pound or Pounds per Inch (lb.-in. as I stated) as the drag on the preload is very minimal. You are correct if you go too far, you’ll need a new crush sleeve!
     

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