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posie rear end in avalanche

Discussion in 'Chevy Trucks' started by flashinglight, Jan 6, 2008.

  1. flashinglight

    flashinglight Junior Member
    from maine
    Messages: 25

    anyone messed with a posie rear end and got the spiders out? can't seem to figure out how the locker comes off to get the spider out
     
  2. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    You need a special tool to press the pin out of the governor and bushing assembly in order to remove it so you can get to the spiders...the tool looks a bit like a C clamp with a horseshoe shaped piece on one end...

    Be forewarned if you do disassemble it though, they're a real pain in the butt to get back together with all the springs and clips back in place.

    If it has spider or side gear problems your far better off to scrap the entire carrier and install a good used one.. they're everywhere if you look around a little.
     
  3. sweetk30

    sweetk30 PlowSite.com Addict
    Messages: 1,588

    thay are called a gov-loc. and most comonly nicknamed gov-bom.

    if its blown toss it out and get a good used one or new one. but best bet is a nice aftermarket posi unit.
     
  4. flashinglight

    flashinglight Junior Member
    from maine
    Messages: 25

    My friends trying to change the seals on the shafts. He claims its eatting the brakes up quick.
     
  5. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    So your just trying to remove the axle shafts to replace the seals?

    You don't need to disassemble the governor or flyweight mechanism in order to get the C clips out.

    On the Gov-loc you remove the lock bolt that holds the spider gear cross shaft in (just like any C-clip type rear end).

    Pull the cross pin out part way and then you need to rotate the diff around until you can get to the other "window" in the diff (you'll only be able to turn the diff so far with the dross pin still part way in it)

    When you look in the window you will see a metal block (shaped like a square "C") Move the C block around until it's facing inward. Then you can push in on the axle and remove the C clip holding the axle in place. Then just slide the axle out.