Sm102 ink fountain roller problem

Discussion in 'Heidelberg Printing Presses' started by MRTYMM, Aug 10, 2020.

  1. MRTYMM

    MRTYMM Member

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    egypt
    Sm102
    Model 1990
    I have problem with ink fountain roller
    The ink fountain roller value is hesitant (not constant ) and the cylinder move fast
    I need to the problem from potentiometer or ssk or motor
    And how to adjust new potentiometer
    I need, a confirm for motor in picture is ink fountain roller or not
     

    Attached Files:

  2. FourFingerRing

    FourFingerRing Member

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    Going by your picture the stroke is set at 18 and the physical setting on the gear box appears to be 18 . Check the gears on the top of the gearbox.

    As you can see the one gear is made of plastic meashed with a smaller metal gear shaft. sometimes they break causing the motor to max out (no control) .

    Im not a maintenance man but if the gears (on top) are not broken the motor is probably shot. Sometimes the stroke will creep on you while you run. Console says one setting, physical setting says otherwise. That could be a pot also.....usually the motor is shot or on its way.
     
  3. junker1984

    junker1984 Senior Member

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    If I properly understand you, it is common for the numbers to fluctuate caused by a failed potentiometer. Replacement is straight forward, calibration is done by manually turning new potentiometer to readout "2" on the CPC display, after you've manually turned sweep mechanism down to lowest point.

    But, I wonder about your statement "hesitant, not constant". If ink fountain roller is hesitant, not constant (consistent), this would be a mechanical issue at the over-running clutch.
     
  4. MRTYMM

    MRTYMM Member

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    thanks for your reply
    There is fluctuate in value at cptronic
    If the problem in potentiometer
    Please the way to change in details
    The of the motor is the correct motor for ink fountain roller
     
  5. MRTYMM

    MRTYMM Member

    Joined:
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    thanks for your reply
    There is fluctuate in value at cptronic
    If the problem in potentiometer
    Please the way to change in details
    The of the motor is the correct motor for ink fountain roller
     
  6. MRTYMM

    MRTYMM Member

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    Thanks for your reply
    Hesitant mean valve for ink fountain roller is fluctuate for pu1 only
    Are the motor in the attached picture is ink fountain roller motor or not
     
  7. junker1984

    junker1984 Senior Member

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    It is the motor for adjustment of how much the ink fountain roller turns.
     
  8. MRTYMM

    MRTYMM Member

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    Printing pressure
    adjustment 1m5
     
  9. junker1984

    junker1984 Senior Member

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    Didn't know you were speaking of the motor at bottom of photo. Motor and pot for sweep control at top of photo, to the right of sweep adjusting mechanism.
     
  10. alibryan

    alibryan Senior Member

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    Good Luck!
     
    junker1984 likes this.
  11. Nouman Javed Hakim Kh

    Nouman Javed Hakim Kh New Member

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    Location:
    Dubai UAE
    replace the potantion meter
     

  12. MRTYMM

    MRTYMM Member

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    How to replace potentiometer
     
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