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Thread: D2 cat pulling to the left

  1. #1
    Join Date
    Apr 2019
    Location
    washington
    Posts
    30

    Default D2 cat pulling to the left

    Ok, so I finally got the D2 I have been working on to run decent. Now, it pulls to the left when going down the driveway. Gets worse the more load you put on it (grading gravel). Both side brakes and clutches work just fine. The only thing I can see is the right track is tighter than the left. Would that make this thing pull to one side?

  2. #2
    Join Date
    Nov 2006
    Location
    Kittanning, Pa.
    Posts
    98

    Default

    My D-2 Pulls to one side, but the one track is worn more than the other. Tracks from2 different machines.
    D4D D65R D73T 933C HT4 955H Gardner Denver comp.318 Cat.

  3. #3
    Join Date
    Nov 2006
    Location
    McBEE, SC
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    2,353

    Default

    Left clutches could be slipping. I guess you know that the steering lever needs some free play to account for future wear?
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  4. #4
    Join Date
    Jan 2018
    Location
    Hartline, Washington
    Posts
    18

    Default

    My uncle bought a D4 in the 1970s brand new. It has been mostly used for dozing in decent conditions, good farm dirt, not much rock.
    As long as I can remember, it has always traveled off to one direction when roading. Traveling down the dirt and gravel roads, I would get the scheme worked out to aim at the far side of the road at some not too distant point, and it would never leave the road. It would travel in a big arc, and then I would aim at the far side again. Very annoying. When working it as a dozer, no obvious problem. Pulling farm equipment, or grooming roads, there might be an issue. No slipping clutches, and as I recall I could never detect any obvious wear differences, all original undercarriage, never any major work done on the tractor. I would say it is still a low hour, low use, good condition machine. I wouldn't mind owing it.
    Next time I get close to it, or run it, I will be looking again, i'm sure.
    Your problem does sound like possible steering clutch slippage if it gets worse with increased load.

  5. #5
    Join Date
    Nov 2006
    Location
    Pittsford NY
    Posts
    4,505

    Default

    As well as relative track length, track roller frame alignment could play a part, even in a brand new tractor. Eddie B has some diagrams about track frame alignment. I thought I had saved them but can't find them. But basically, the frames should be parallel, perpendicular to the pivot shaft, the rollers, idlers and sprockets should all be in line, the track frames should be straight in both planes and not twisted, spaced the same width out from the tractor body, etc., etc. My D2 is all over the map so part of the r-n-r is to remove the wear and get the alignment right
    Cheers,
    Neil.

  6. #6
    Join Date
    Nov 2019
    Location
    2624 Turner Rd Ceres, CA 95307
    Posts
    1

    Default

    Watch from the front when someone else is driving. See if the grousers slide one way or the other as the machine moves forward. Could indicate an alignment issue.

  7. #7
    Join Date
    Jan 2018
    Location
    Hartline, Washington
    Posts
    18

    Default

    That all makes sense, and brings up some things I had not thought of.
    Thanks!

    Quote Originally Posted by Neil View Post
    As well as relative track length, track roller frame alignment could play a part, even in a brand new tractor. Eddie B has some diagrams about track frame alignment. I thought I had saved them but can't find them. But basically, the frames should be parallel, perpendicular to the pivot shaft, the rollers, idlers and sprockets should all be in line, the track frames should be straight in both planes and not twisted, spaced the same width out from the tractor body, etc., etc. My D2 is all over the map so part of the r-n-r is to remove the wear and get the alignment right

  8. #8
    Join Date
    Nov 2006
    Location
    Ellsworth, KS
    Posts
    385

    Default Wandering

    Yes, a too tight track on one side will make a difference in going in a straight line. catskinner

  9. #9
    Join Date
    Dec 2006
    Location
    victoria australia
    Posts
    3,112

    Default Undercarriage Alignment

    Hi Team,
    data as mentioned.
    Cheers,
    Eddie B.
    Attached Images Attached Images

  10. #10
    Join Date
    Nov 2006
    Location
    Pittsford NY
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    4,505

    Default

    Thanks for posting that Eddie, much appreciated!
    Cheers,
    Neil.

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