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upper king pin remove and replace

Discussion in 'OffRoad Design' started by RUSS84K5, Jun 13, 2002.

  1. RUSS84K5

    RUSS84K5 1/2 ton status

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    Hi,

    I have to change the upper king pins in My 60. I know the allen head size is 7/8 but i havn't been able to find a source for the tool. Can anyone tell ware to get one or if the Dana Spicer tools are availiable (number given in online manual).

    Also, to get the 500-600 ft/lbs of tourque on the king pins can I simply make a 5 foot long braker bar and weld a socket at the end of it to attach the tourque wrench (set to 100 ft/lbs) ?

    Thanks
    Russ V
     
  2. Don

    Don 1/2 ton status

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    Most Bearing Supply Houses, also Sell Tools. Buy a 7/8 Allen Head Socket, in 1/2 or 3/4 Drive, Prefferably 3/4 for the Torque, and use You"re 5ft. Pipe or Bar.
     
  3. willyswanter

    willyswanter 1/2 ton status GMOTM Winner

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    Most rental shops rent a 3/4" drive torque wrench and they will do 500 ft/lbs. I rented one for 2 days for 29 bucks.
     
  4. BXwildshot

    BXwildshot Registered Member

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    Go to www.MSCdirect.com

    Part #75470567 7/8" ALLEN SHORT ARM HEX KEY $12.44 plus shipping.
     
  5. Stephen

    Stephen 1/2 ton status Moderator Vendor

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    We actually found the tool from the snap on guy (and he enjoyed using it on us.....) and use a torque multiplyer that takes a 1/2" drive on the torque wrench side and a 3/4 drive on the torquee side.
     
  6. RUSS84K5

    RUSS84K5 1/2 ton status

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    Hi Stephen,
    I checked the torque multipliers out and they are a little on the pricy side. Can a 5 foot bar inbetween the king pin and the torque wrench (set to 100 ft/lbs) get the pin to 500 ft/lbs? also do you have the part number for the snap on 7/8 socket head?

    any word on the front springs?

    Thanks
    Russ Vassar
     
  7. 70~K5

    70~K5 1/2 ton status

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    Now I have another reason for having a snap-on 3/4" drive torque wrench. It's not just for big rig engines now. /forums/images/icons/cool.gif
     
  8. Stephen

    Stephen 1/2 ton status Moderator Vendor

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    The socket head allen says "IMA283". It's 1" drive and we have a 3/4 to 1" adapter. It's #GLA72A. Lube spec for these parts is vaseline, probably lubed for life after the initial purchase.
    /forums/images/icons/ooo.gif
    Without getting too deep into it, I think you'd have to figure in the lever arm length of your torque wrench with your lever length. So if you want to set the wrench to 100 ft-lb, you need a TOTAL lever of 5.5 feet to get 550 ft-lb on the pin. If your wrench is 1.5 feet, you'll need a 4 foot extension. When the pin goes to 550, the bar will stop, then the wrench will click and you're done.
    Or you could put a 5.5 foot bar on it and apply a 100 lb load to it somehow, maybe just by pulling pretty hard? That depends on your personal calibration specs.
     

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