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The JLG 40F Boom Lift Dilemma

Discussion in 'Other Construction/Demolition Equipment' started by od1, Sep 12, 2009.

  1. Rick39

    Rick39 Active Member

    Joined:
    Jan 6, 2017
    Messages:
    30
    Location:
    SE PA
    Those are Bertea valves. The JLG P/N for the pilot section is 7001307.
    Unfortunately NLA from JLG for the past 10 years.
    What is going on with them? Do you have enough pilot flow?
    Also Bertea valves do not function with cold oil unless the oil is thinned.
    If you are stuck maybe Hindley still has someone that knows how to repair them.
     
  2. DanD441972

    DanD441972 Member

    Joined:
    Nov 19, 2022
    Messages:
    6
    Location:
    Rensselaer Falls,ny
    I have one that has a broken paddle inside and will not function. The second one only will work in one direction!
     
  3. DanD441972

    DanD441972 Member

    Joined:
    Nov 19, 2022
    Messages:
    6
    Location:
    Rensselaer Falls,ny
    I believe my pilot flow is ok, because one functions as normal and other will work I one direction