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Recent content by Birk7

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    The JLG 40F Boom Lift Dilemma

    OFF, They are Bertea, Could you tell me the function of the dump valve and what might be the result of it not working. thanks
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    The JLG 40F Boom Lift Dilemma

    OFF, I have repaired the wiring to the dump solenoid and replaced the bad relay. The RPM increases but the movement speed does not. Somebody had been into the dump valve and now when you assemble it the needle is set into the port. As though the solenoid is on. I was hoping to find a breakdown...
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    The JLG 40F Boom Lift Dilemma

    First things first I'd like to thank Willie59 for the manual. I think it was written for my lift it was built in 1980. It has helped me find a lot of problems. Right now I'm working on a speed problem. The lift, swing and drive will not go into hi speed. There was and still is a problem with the...
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    The JLG 40F Boom Lift Dilemma

    Time to get back to work on my JLG 40F. I have two problems one is with a leaky solenoid whitch also has a small rod or button that has popped out on the top of it. The other problem is it does not always turn left. I don't know if the two problems are related. Still in need of prints.
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    The JLG 40F Boom Lift Dilemma

    At some point I saw that someone was looking for 40g manuals. i went straight to jlg and it was the oldest one they listed. No help to me...
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    The JLG 40F Boom Lift Dilemma

    Hello this is my first and I am also looking for a set of manuals for a JLG 40f. I was able to get a 40g manual off the jlg site but there are to many differances.
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