Polar 115 em monitor hydraulic oil entering the chamber

Discussion in 'Cutters and Trimmers' started by afandi84, Sep 15, 2023.

Tags:
  1. afandi84

    afandi84 Member

    Joined:
    Aug 2022
    Messages:
    11
    Location:
    Indonesia
    the machine is not running perfectly. always stop when cutting the paper. The position of the knife is in the middle, and does not return to all positions. After I checked, it turned out that hydraulic oil had entered the motorbike compartment like the picture I sent. the room was full of hydraulic oil
    can anyone help me. what should I replace?

    Thanks a lot for all your help.
     

    Attached Files:

  2. Mehanka Abortmaher

    Mehanka Abortmaher Senior Member

    Joined:
    Apr 2022
    Messages:
    147
    Location:
    Russia
    @afandi84
    Hi.
    Decide which oil gets into the limit switches.
    Hydraulic-it is necessary to change the seals of the clutch switch piston (the gearbox crankcase will be overflowing with oil to the ventilation plug)
    Transmission-change the oil seal of the crank (it stands behind the cam that is in the photo)
     
  3. afandi84

    afandi84 Member

    Joined:
    Aug 2022
    Messages:
    11
    Location:
    Indonesia
    thank you for replying to my message,

    Hydraulic oil comes out of the ventilation bolt at the top, where the oil is filled. I have seen that there are no leaks from under the engine. but the hydraulic oil enters the engine gear box
     
  4. Mehanka Abortmaher

    Mehanka Abortmaher Senior Member

    Joined:
    Apr 2022
    Messages:
    147
    Location:
    Russia
    You need to disassemble the hydraulic cylinder on the gearbox at the bottom right, which is responsible for shifting the clutch. Inspection of the cylinder, piston, clutch release rod bearing will help determine the problem.
    We recently repaired the Polar 92 gearbox. A long and difficult repair with the replacement of the crank shaft and the alteration of the hydraulic cylinder.
     
  5. afandi84

    afandi84 Member

    Joined:
    Aug 2022
    Messages:
    11
    Location:
    Indonesia
    Thank you Mehanka Abortmaher.
    I have opened the gear box you suggested. and I have replaced the piston seal with a new one. I have also replaced the open bearing.
    for piston seal size 60x68x8
    bearing 7307 B

    thank you for helping
     

    Attached Files:

  6. Mehanka Abortmaher

    Mehanka Abortmaher Senior Member

    Joined:
    Apr 2022
    Messages:
    147
    Location:
    Russia
    I hope you don't have to remove the gearbox for a complete rebuild :)
     
  7. afandi84

    afandi84 Member

    Joined:
    Aug 2022
    Messages:
    11
    Location:
    Indonesia
    I replaced the black seal with engine number 205020, size 60x68x8.
    hydraulic oil no longer leaks. Hopefully the seal will last a long time :)
     

  8. Mehanka Abortmaher

    Mehanka Abortmaher Senior Member

    Joined:
    Apr 2022
    Messages:
    147
    Location:
    Russia
Loading...