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Recent content by Rick39

  1. R

    Case 530CK no clutch

    The converter oil needs to warm up before the clutch will release enough to shift easily. Try starting it in neutral, let it warm up a bit, then shut it off and restart in gear with the clutch depressed. Release the clutch, drive around a bit. With the oil warm, machine completely stopped...
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    The JLG 40F Boom Lift Dilemma

    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...
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    JLG 40E stuck in slow motion mode

    When you activate steer a contactor puts full power to the pump motor bypassing the sevcon. When operating normally the sevcon meters the current going to the motor. Some of these had low voltage protection built into them. You may want to check the individual batteries and charge some...
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    JLG 40E stuck in slow motion mode

    Can you plug it in? 47.5 volts is nearly dead. Fully charged resting voltage should be 50.4 and will approach 60 as the charger is finishing up.
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    JLG 40E stuck in slow motion mode

    We're making progress. If the unit was working correctly the boom functions would go into creep mode when above elevation and tilted. Does the pump speed knob have any affect on the boom speed? I'm not sure what the speed signal should be at pin 13 other than it comes from pin 2, up through...
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    JLG 40E stuck in slow motion mode

    Do you now have 48v at pin 7 yellow on the sevcon? If so check pin 13 white/violet with a boom function engaged and vary the boom speed knob. That will tell us if the sevcon is seeing the boom speed command.
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    JLG 40E stuck in slow motion mode

    Pins 1 & 3 should power up the sensor (hot and ground) and 2 should have 48v coming out of the sensor when level. Check for voltage between 1 & 3, should be 48V. Is the led on the bottom of the sensor lit up? You could try to jump power to the blue/red wire to simulate a signal from the tilt...
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    JLG 40E stuck in slow motion mode

    They are difficult to read. If you print them out sometimes you can fold an edge back and match it up to the corresponding page.
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    JLG 40E stuck in slow motion mode

    OK, so your elevation switches are working but no signal from the tilt sensor. The tilt sensor has three wires, a hot and ground going in, and one with 48v out when the sensor is level. The wire colors at the sensor could be different but according to the print pin 1 on the connector...
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    JLG 40E stuck in slow motion mode

    Check your voltage at pin 4 orange wire on the sevcon, should be 48v from the elevation switches when in the stowed position. Also check pin 7 yellow wire, should be 48v when the unit is level. Pin 13 white/violet is the signal from the pump speed control and pin 14 white/black is the drive...
  11. R

    JLG 40E stuck in slow motion mode

    The JLG analyzer does not work on the 40e with the sevcon. There is a "calibrator" that was used on them that had limited capability compared to the current unit introduced with the e series scissor lifts. If you changed the sevcon the new one might have some options set up incorrectly.
  12. R

    Genie Z45 overheating problems

    You may want to shoot the temp of the oil in the engine oil pan compared to the cooler temp in and out. I've seen a few bad thermostats over the years but it's pretty rare.
  13. R

    Genie GS1930 will not lift two people

    I agree, 360 hours is a fair number of hours on an electric unit, figure one hour on an electric is 10 on an IC machine. Again, I will bet that the hydraulic oil is badly contaminated. I've seen dozens of those pumps fail and every one had the remains of ground up pump mixed in with the...
  14. R

    JLG 400S High Rev when Starting

    If it is truly over speeding to more than max governed RPM it's not an electrical issue. If you remove the actuator the engine should run at max governed RPM. The springs on the actuator push the rack back toward less fuel delivery. The rack moves according to the governor arm position and...
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    Genie GS1930 will not lift two people

    If it returns a good flow of oil when trying to lift but not moving then the pump may be OK. I had a few that had motor controller issues causing lift problems but those were older than yours. The simplest way to check a pump is the heat test. Get them to put two guys on the lift, let the...
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