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Recent content by Mr94

  1. M

    963a Cat won’t build drive pressure to right track.

    The orings were all very hard and I replaced any seal or gasket that I opened up. I can’t say I saw any like that except the rubber seals in the little steel lines under the top cover shredded when I took them apart.
  2. M

    963a Cat won’t build drive pressure to right track.

    The retaining bolt fell out inside the cylinder that strokes the right pump swash plate. The piston came off inside and turned sideways so it bypassed any oil sent through it. I was able to save the cylinder and ended up about $3000 into the project before labor. A track motor would have been...
  3. M

    963a Cat won’t build drive pressure to right track.

    2
  4. M

    963a Cat won’t build drive pressure to right track.

    I finished this project up after having to make the tools to run the overhead myself. It pushed trees yesterday for the first time after owning it since last August
  5. M

    963a Cat won’t build drive pressure to right track.

    I will be sure to finish up this thread as I get done with the project. I have the main components back together and i need to make some tooling to do the linkage adjustments and air neutral adjustments on the servos. Three cat dealership locations couldn’t find the tools or have someone to set...
  6. M

    Diagnostic tablets discussion

    The diagnostic tablet market has a reputation for lacking full functionally as compared to laptops with oem software. For those of us that change a lot of hard parts but want to leave the most complex computer work to dealerships, tablets still offer a good level of functionality without having...
    • Mr94
    • Thread
    • autel cando cat et scan diagnostic scanners diesel diagnostics diesel laptops insite matco scan tool snapon
    • Replies: 0
    • Forum: Tools of the Trade
  7. M

    963a Cat won’t build drive pressure to right track.

    Time to make some progress
  8. M

    963a Cat won’t build drive pressure to right track.

  9. M

    963a Cat won’t build drive pressure to right track.

    Will do. If I pull the hpcu and pump head to repair this, what else would you do to a 13000 hour machine with an excellent undercarriage but leaky old engine? I probably only need 200 hours from this machine.
  10. M

    963a Cat won’t build drive pressure to right track.

    Before removing the linkages i unhooked one line at a time and put a pressure gauge directly on the servo. The gauge read 300 on both outlets. The cylinder does not hold pressure. It bypasses oil to sump as fast as you can send it. Is that my whole problem? Piston seals in the swash plate...
  11. M

    963a Cat won’t build drive pressure to right track.

    The servos are stroking fully. I can’t even get the right cylinder to budge a bit. I have very little drop in servo and charge pressure even when I suddenly stroke the servos and it recovers very quickly unless I try to make it bog to vent out on the left one. The cover plate is shown better in...
  12. M

    963a Cat won’t build drive pressure to right track.

    Sorry, phone locked up but it let me post what I had. My linkages did move the 17 degrees once the underspeed valve raised properly.
  13. M

    963a Cat won’t build drive pressure to right track.

    I lowered the oil level, set the brakes as instructed, and watched the swash plate cylinders while moving the FNR lever. The left side moves fine. The right side doesn’t move at all. I can’t get a very good look at anything else in there on the right side with that cover plate in the way up...
  14. M

    963a Cat won’t build drive pressure to right track.

    I have been reading your stuff for years, thanks for chiming in. I moved the servo spool with my hand right there with the cover off, engine running. I’ll look for the bolt hole for the brake lever. I don’t have the parking brake capped, but I can do that. I’ve never worked on one of these...
  15. M

    963a Cat won’t build drive pressure to right track.

    I’m going to test servo pressure and charge pressure while trying to stroke the pumps and report back tomorrow.
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