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D7 17A Final Drive

Discussion in 'Dozers' started by LG 78, Aug 21, 2022.

  1. LG 78

    LG 78 Well-Known Member

    Joined:
    May 3, 2020
    Messages:
    64
    Location:
    King Country NZ
    HI team
    I should have sold the old girl but anyway..
    I heard a knock in the right hand side final drive
    Just drained the oil and this came out
    Do I just take the drive off and replace it with the one off my spare parts machine (which is still complete and running) or do I do a bit of investigating and try to fix this one Looks expensive
    Thanks for your help
     

    Attached Files:

  2. 56wrench

    56wrench Senior Member

    Joined:
    Dec 4, 2016
    Messages:
    1,433
    Location:
    alberta
    If you can, i would pull the complete assy off your parts machine and change the whole assy out and then assess the damage to the original one at your leisure after the machine is back up and running
     
    Mcrafty1, randy448 and LG 78 like this.
  3. LG 78

    LG 78 Well-Known Member

    Joined:
    May 3, 2020
    Messages:
    64
    Location:
    King Country NZ
    Maybe the easiest way forward, I am thinking of using the same hub though so that I dont need to change sprockets over so might look into taking it off first and see what lies beneath
     
  4. Dave Neubert

    Dave Neubert Senior Member

    Joined:
    Jul 18, 2018
    Messages:
    1,212
    Location:
    Monroe NC
    You need a cat press to take it apart and put it together you can pull the whole cover and sprocket off in one piece but you will most likley damage he seal. It takes at least 70 tons to press sprocket off. If your top pinion is bad you will have to pull steering clutch to replace it clutch hub has to be pressed on and off too
     
    John C. and DB2 like this.
  5. epirbalex

    epirbalex Senior Member

    Joined:
    Aug 5, 2017
    Messages:
    385
    Occupation:
    peasant
    Location:
    Akitio
    Not a good idea to wreck a going machine . Is it possible to load up the running machine with the good bits from the failed one ? Never know when the other final drive may fail . Big dilemma , I can see a need for a third dozer , one not running .
     
    balls2go likes this.
  6. LG 78

    LG 78 Well-Known Member

    Joined:
    May 3, 2020
    Messages:
    64
    Location:
    King Country NZ
    Yes very true on that 3rd machine epirbalex
    Is anyone keen on having that conversation with my wife?
     
    D5Dan, 56wrench and bccat like this.
  7. Puffie40

    Puffie40 Well-Known Member

    Joined:
    Apr 5, 2010
    Messages:
    191
    Location:
    Southeastern B.C.
    Looks like the complete face of a gear tooth. Hopefully it's from the bull gear and not the pinion, but either way that is the beginnings of a death rattle from that final, and immediate service is needed.

    General Gear in Boise (tractorparts.com) should have some 17a's in his wrecking inventory.