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Section for komatsu d20,21 and similar grey market dozers

Discussion in 'Dozers' started by rangerfreak, Jun 4, 2007.

  1. rangerfreak

    rangerfreak Well-Known Member

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    I created this thread to hopefully discuss komatsu dozers, in order to help people like myself that have a komatsu dozer and have questions about them.
     
    Last edited: Jun 4, 2007
  2. wrenchbender

    wrenchbender Senior Member

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    Welcome rangerfreak

    Welcome aboard rangerfreak:drinkup , I'm not a Komatsu expert:eek: but there are a few guys here that do qualify. So fire away and someone will probly answer all your questions.
     
  3. Countryboy

    Countryboy Senior Member

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    Welcome to HEF rangerfreak! :drinkup
     
  4. rangerfreak

    rangerfreak Well-Known Member

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    thank you for your warm welcome

    im loving this forum its been a big help
     
  5. R Leo

    R Leo Well-Known Member

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    Welcome

    Hi, n00b here too!!!

    FWIW, I have a D20-P6. Just bought it about 3 weeks ago...I have both the repair and the operation/service manual. I'm by no means any sort of expert but, if you have any questions you think might be covered in the manuals, I may be able to find the info and answer them.
     
  6. rangerfreak

    rangerfreak Well-Known Member

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    question about dip stick

    on my new dozer or should i say used dozer there 3 dipsticks one is under the hood which i know is the oil stick, then there is one right underneath the seat what is this one?and what is the one underneath the brake peddle on the right.Also what specific fluid should i use on each one.
    thank you for your time and have a nice day

    P.S how do i tighten my tracks
     
  7. R Leo

    R Leo Well-Known Member

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    Rangerfreak,
    All my documentation is at home, I'll look at the manual and post the exact answers for you this evening.

    I do know that the hydraulic system does NOT use regular hydraulic fluid.

    Take care,
    Randy


    PS - I ordered my Operation/Service manual from this outfit: www.manuals.us
    The repair manual came with the dozer (the prior owner had bought it)
     
  8. rangerfreak

    rangerfreak Well-Known Member

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    need to know how to tighten tracks

    Was wondering how to tighten my tracks on my komatsu d20A-5
     
  9. rangerfreak

    rangerfreak Well-Known Member

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    iv been useing regular hydraulic fluid

    is this bad iv heard that 10w-40 motor oil is a choice but i have been using regular ro anti wear hydraulic fluid
     
  10. R Leo

    R Leo Well-Known Member

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    Right. I'll scan the pages and post them for you when I get home.
     
  11. Orchard Ex

    Orchard Ex Super Moderator

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    One is the transmission and the other is the clutch.
    To tighten the tracks: take off the access plate on the track cover, put your grease gun on the zerk and pump to tighten the tracks. Go slow, it doesn't take very much.

    I think that the book says 30w oil in the trans, finals and transfer case (D21), 10W in the clutch and hydraulic tank.
     
  12. kc5gxc

    kc5gxc Well-Known Member

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    Location:
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    Komatsu D21

    Howdy guys
    I am a new owner of an old Kom D21P-6. Been pushing a lot of brush and smaller trees with it. It runs mighty good. I can't make new posts yet.
    I just bought a new hydraulic filter for it today. Can't get one from anywhere but Komatsu ... but all other filters are available from normal sources.
    I have ordered all the manuals from SSB Tractor.
    So far, I have changed all fluids and filters.
    Welded on it for 3 days.
    Adjusted all linkages.
    Installed a new coolant temp gauge and an oil press gauge.
    Rewired some stuff on it.
    Adjusted the tracks by the book.
    Been told I got screwed when I bought it.
    Found out I can't find another one anywhere around here and the guy who said I got screwed wants to sell me one for over twice what I paid for this one....ha ha ha ha ha ha......the jerk!!!!!
    So far, it has done really well for me, but then, I never even ran one before, so can't really compare it with anything, but my tractor...ha ha
    Hope to see more posts about these machines.
    Thanks, Pete in MS
     
  13. Steve Frazier

    Steve Frazier Founder

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    Welcome to Heavy Equipment Forums kc5gxc!!:drinkup

    I've upgraded your account so you may start threads now. Thanks for joining us!!
     
  14. rangerfreak

    rangerfreak Well-Known Member

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    question newbie here

    (there is a finals dip stick too as well as a transfer case dip stick along with a transmission dip stick as well?)
     
    Last edited by a moderator: Jun 6, 2007
  15. R Leo

    R Leo Well-Known Member

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  16. rangerfreak

    rangerfreak Well-Known Member

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  17. R Leo

    R Leo Well-Known Member

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    Not a problem. Take care.

    RL
     
  18. rangerfreak

    rangerfreak Well-Known Member

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    dozer question

    :drinkup i have just a few questions about my d20A-5 dozer

    A:is there a fuse box and where is it

    B:does anybody have an colored picture of the grease fitting area where you tighten the tracks.

    C:how do i get the plugs out so that i check out the fluid level of the final drive on the back of the dozer.

    Thank you for your time and have a nice day
     
    Last edited: Jun 6, 2007
  19. R Leo

    R Leo Well-Known Member

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    It's under the rectangular black cover on the left side of the dash panel...at least that's where it is on a -6...you have a -5, right?

    Look at the long steel cover that covers the side of the track frame. There's a smaller cover built into that big piece of steel. The zerk is under there.

    I think that uses a large allen wrench...maybe 12mm or 14mm? You can get one at NAPA. They're used to remove differential and transmission plugs on foreign cars.
     
  20. Orchard Ex

    Orchard Ex Super Moderator

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    I have a -6, the plug has a square hole that fits a 1/2" breaker bar or ratchet nicely. (I.E. ratchet with no socket on it) If it's not square it may be an 8 point which still fits a square drive of the ratchet/b. bar.