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    1999 JLG600A No reverse!

    I replaced the basket pivot three hoses and the platform level up hose. After that was done, I seem to have lost Reverse. Forward is fine. Reverse brings up engine RPM but zero movement. I quickly flipped the lever on the pump solenoid thinking that solenoid is what determines Forward vs...
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    Ford LRG - 425 starting problem

    On mine you don't have to be in the cradle, but down low for high speed to be allowed.
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    JLG boom moves itself

    Yeah, I would open up the console and look to see if the forward switch contacts are either stuck engaged or are getting pushed engaged by the stick that isn't zeroing.
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    JLG Boom Lift hydraulic "slack"

    Ok, So let's assume the main tower cylinder leaked down in the three months since the machine was last used...is that something that is expected or an "Oring" that is leaking down? If so, what's best guess of what might be leaking down - if this is abnormal? I gotta assume it's abnormal...this...
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    JLG Boom Lift hydraulic "slack"

    Was looking for a diagram of the lift parts so we are all using the same part names... The lower tower is down ("G)". This is the lowest, largest cylinder. The Main Boom was angled upwards 45 degrees or so (cylinder "A"). I extended the fly boom ("B" - linear) that holds the jib / basket. Once...
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    JLG Boom Lift hydraulic "slack"

    I don't think it's the slew ring then because that wouldn't "fix itself". The unit currently doesn't have the issue, once I cycled the hydraulics. The lowest main Tower rocked maybe 30 degrees, which translated into the basket dropping about 20 feet. So it would have to be a realllllly worn...
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    JLG Boom Lift hydraulic "slack"

    Where's the slew ring? Thanx...believe it or not, forgot that I could operate from the ground...first place you go blind is in the eyes.
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    JLG Boom Lift hydraulic "slack"

    I was using the 600A yesterday. Drove it to the worksite about 1/2 mile. Then, I rose the main boom, and telescoped the fly boom almost to full extension. The lowest tower main Boom Assembly then rocked forward causing the whole upper section to drop suddenly. Thankfully I was secured in the...
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    JLG 600A sputters and dies when hot - Gas Carburated

    Hi epirbalex, yes, the battery ends were cleaned and ends were replaced with new battery. Starter and ring gear were also replaced that were damaged due to back fire. Starter has good cranking speed so i think the high amperage is fine. I might end up using the rig today...will post back if...
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    JLG 600A sputters and dies when hot - Gas Carburated

    Installed new ignition module / map sensor / wiring adapter kit...the old ECU did have a tiny hole that likely was where the old MAP sensor line was connected. Starts up...hopefully it will now run correctly hot and cold. The rebuild kit for the carb was ordered, then cancelled by the seller...
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    Ford LRG - 425 starting problem

    I called powertech...spoke to Kim...very helpful. I have the same original module as you...but my map line apparently was broken off and someone before me must have taken off the vacuum line... Ordered the update kit. This would answer quite a few questions on hard start, stall, backfire, fuel...
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    Ford LRG - 425 starting problem

    I am starting to think I might need the same ECU...mine also has starting issues and still like a light switch go from running perfect to backfiring, rough running until it dies with some black exhaust smoke. Seems to be better under load. Much better since replacing the crank position sensor...
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    JLG 600A sputters and dies when hot - Gas Carburated

    I ordered a carb rebuild kit as the "accelerator pump" gasket was leaking externally from having been removed too many times. I definitely have a fuel related issue that I believe is making cold and hot starts difficult. It also will occasionally stumble like from running real lean once in a...
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    JLG 600A main tower not dropping

    Hi, Thanx for the feedback. I was able to take the plunger side out...there wasn't any O'rings that I saw. What I saw was a stainless plunger, the "nut" that has the seal to keep fluid from leaking out the plunger, a stainless circlip that keeps the plunger from getting pushed out of the...
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    Ford LRG - 425 starting problem

    According to my manual...the timing is adjusted by engine temp and rpm alone (from memory).
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    Ford LRG - 425 starting problem

    Mine doesn't have a map...parts diagram doesn't call for one. I thought that might be part of the ECU retrofit kit.
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    Ford LRG - 425 starting problem

    A map sensor? I thought you had a carburetor? Map sensors are for EFI engines....
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    Ford LRG - 425 starting problem

    Did you try starting fluid? That is a free test.
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    Ford LRG - 425 starting problem

    when the engine is hot and off, spray a bit of ether in the carb intake (remove the rubber inlet hose). If it starts right up, then it doesn't sound like ignition...sounds like no fuel. That's the problem mine has right now. Check that you have 12 volts at the fuel solenoid at the base of the...
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