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308E2 CR jerky hydraulics

mar5690 ยท 2024-04-10 12:08

machine becomes very jerky when the hydraulics comes up to operating temp.Also has had a hissing sound in the valve stack for very long time-even had it in a cat shop numerous times but no fix. finally replaced part number 423-4562 and hissing went away.Old part was subbed to part 601 4559. Jerkiness and hissing went away for about 8 hrs operating time and now jerkiness is back but no hissing.Also valve gets very hot to touch. thoughts and comments? thanks

Replies6
  1. #1DEMLONE702024-04-11 15:14

    Serial number ?

  2. #2Nige2024-04-11 15:38

    Attached the reason given for the part replacement. Note that there is a missing Part Number in the sequence. 423-4562 initially updated to 503-6530 which later updated to 601-4559.

  3. #3mar56902024-04-12 00:12

    FJX!-1534

  4. #4mar56902024-04-12 00:13

    FJX1-1534

  5. #5mar56902024-04-12 00:21

    reason the valve 423-4562 was replaced was due to coil failure. the valve 601-4559 is the new replacement number according to dealer. the serial number is FJX1-1534

  6. #6mar56902024-04-15 09:44

    FJX-1534