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  1. E

    JLG 600A ?

    Thanks Bob. I have inspected cables front to back, find no visible damage. This machine has 5000 hrs. I wonder if anyone has experienced broken wires inside the cable, possibly where it makes a short bend. Anyway, thanks for your response, I'll try to check voltage at the solenoid.
  2. E

    JLG 600A ?

    Thanks Rentamechanic for your reply. Yes I have downloaded the manuals, and affirmative on the speed pot. Incidently , I am not an electrical engineer, but I think their electrical diagrams are awfully hard to follow. Guess my next step is to hire a service man. Thanks ej.
  3. E

    JLG 600A ?

    Can you help me ? Have a JLG 600A Ser.# 0300061571 having trouble with the main lift. Everything else works, fine but on occasion the main lift wont go up. I have put in a new controller and searched the cables and found no damage. The main lift works fine from the ground control. Any...
  4. E

    JLG 600A

    Hi guys, I need some help with this lift. everything works good except at times the main lift doesn't want to go up. always comes down and works good from the ground control. I have put in a new control and looked very hard for damaged cables and have not found any. It does seem to work better...
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