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komatsu D39PX-21 tracking issues

chris allen ยท 2016-01-03 23:27

hey guys , my tractor is tracking more to one side ,,,, is there a adjustment screw that I can adjust on one of the drive motors so that it ll track straight again an I want have to keep correcting it so itll walk inline

Replies5
  1. #1Dickjr.2016-01-04 14:35

    Is it a 21 or 21A , the 21 is PPV controlled and the 21A is electronic.

  2. #2chris allen2016-01-05 20:47

    is just 21

  3. #3dblaneyfan2016-01-07 10:37

    Here is the travel deviation adjustment procedure: http://www.mediafire.com/view/odc1if2cnedl3xj/D39PX21_Travel_Deviation.pdf Best of luck.

  4. #4chris allen2016-01-07 19:33

    thanks for the help my fellow Georgian

  5. #5DK882016-01-07 19:55

    Did it just start mis tacking over the last little bit slowly getting worse? Maybe start by checking charge pressure?, and then a stall test to check the pump and motor condition, and if it's low then you will need to isolate the pump from the motor, could have a system failure starting, adjusting the deviation will just band-aid it.