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Dan
Dan, Technician
Category: Industrial Equipment
Satisfied Customers: 5297
Experience:  17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
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Jlg 2032e2 will intermittently not run in gh speed when in

Customer Question

Jlg 2032e2 will intermittently not run in high speed when in stowed position.
Submitted: 1 year ago.
Category: Industrial Equipment
Customer: replied 1 year ago.
Sometimes it won't run in low speed unless I turn wheels back and forth a couple times, then I hear motor engage. When running in low speed setting , if I toggle into high speed setting, by using toggle switch, it will run high speed. But if lift is set to high speed at stand still, it won't move at all.
Expert:  Dan replied 1 year ago.

Hi my name is***** will be glad to try to help. What is your serial number?

Customer: replied 1 year ago.
I don't have the serial number with me
Expert:  Dan replied 1 year ago.

Is it throwing any faults on the display?

Click these links for the manuals for operation and troubleshooting

Service

Operation

Expert:  Dan replied 1 year ago.

High Drive Speed Switch

- The high drive speed

switch, when used in conjunction with the joystick

being operated in the drive mode, provides addi-

tional oil flow to the drive circuit for increased travel

speed. To operate high drive, depress the high drive

speed switch either simultaneously with the drive

switch or while operating the drive function.

NOTE:

The High Drive Speed switch will cut-out when the

platform is raised above the stowed position, return-

ing drive speed to low until the platform is lowered

completely.

Customer: replied 1 year ago.
The only display is on the platform control box and it is just a single lamb basically for tilt. No faults.
Expert:  Dan replied 1 year ago.

Drive Switch

- The drive switch, when used in con-

junction with the joystick, provides for driving the

machine in forward or reverse. Drive is activated by

pressing the drive switch, in conjunction with the

trigger switch, and moving the joystick forward (for-

ward) or backward (reverse). Drive speed is deter-

mined by the distance the joystick is moved forward

or backward. Increased drive speed is possible

when the high drive speed switch is pressed either

simultaneously with the drive switch or while operat-

ing the drive function. The drive switch is part of the

enable circuit, which provides power to the joystick

and the drive function for 3 seconds when the drive

switch is pressed. If the joystick is not activated

within 3 seconds, the drive switch must be pressed

again before activating the joystick. When the joy-

stick is returned to the center off position, the opera-

tor has 3 seconds to re-activate the joystick or select

another function before power is removed by the

enable circuit. In addition, the posi-trac switch can

be engaged while operating the drive function to

give a more evenly distributed oil flow to each drive

motor. Do not try to operate the drive, lift, and pow-

ered deck extension functions simultaneously. If the

drive, lift, and powered deck extension functions are

selected simultaneously, no function will operate. If

this occurs, pause, then press only one of the func-

tion switches to activate the function

NOTE:

The machine is equipped with a Pothole Protection

System which lowers automatically when the plat-

form is raised. If the Pothole Protection System does

not fully lower, the DRIVE function is cut out until the

platform is completely lowered.

Expert:  Dan replied 1 year ago.

Thanks for the update Scott. Run through the manuals I posted for those functions as there are testing and troubleshooting steps as well as schematics to help. Click this link for the other serial number break manual.

Service 2

Customer: replied 1 year ago.
When the lift is lowered, and in slow speed mode it periodically doesn't move unless I turn the wheels back and forth. The high speed switch on this lift is not a momentary. It is a single throw switch. When switched to High speed it stands still.
Expert:  Dan replied 1 year ago.

Thanks for the info. Check the reliefs and cartridges in the main control valve for debris in the valves causing them to stick and for damaged o rings that could cause these symptoms. The valve and the breakdown is in the manual I posted. Let me know the results and if we need to dig deeper. Also check for power to the solenoids for each of those functions as if there is no power when there should be, it will be electrical.

Customer: replied 1 year ago.
I'm going to have a look tomorrow. Do you think it could be a limit switch?
Expert:  Dan replied 1 year ago.

It very well could be or a harness problem in that circuit. See if there is a power loss to the solenoids which will give a better idea on which way to go in testing.. let me know

Expert:  Dan replied 1 year ago.

If power to the solenoid is lost then it will be electrical... Either harness, sensor or switch problem

Customer: replied 1 year ago.
Where should I start?
Expert:  Dan replied 1 year ago.

I would start testing for power at the solenoids as if there is none then you know the problem is electrical. Then access the schematics in the manual to test the harness and circuit with am OHM and volt meter as well as a test light to test the circuit to isolate the problem. If there is power there but the function does not work try swapping the solenoid valves with another function to see if the problem moves with it indicating a faulty solenoid valve.

Customer: replied 1 year ago.
I assume there should be no voltage at the solenoid valve until that function is engaged.? What is normal voyage for a closed circuit? And how do I conduct the test if the unit is moving?
Expert:  Dan replied 1 year ago.

Yes, that is correct. Also with the switch on to power the functions you can have a helper run the switches while you test. there is also a flash code procedure in the manual as well that may flash a code helping isolate the problem. I recommend reviewing the manual and also seeing if you can pull any codes using the procedure in the manual. I am logging off for the night. Let me know the results of the tests.

Expert:  Dan replied 1 year ago.

No drive function when platform fully low-

ered. Lift function okay

Malfunctioning limit switch Use VOM to

verify limit switch

inputs. Adjust

or repair malfunctioning limit switch

The adjustments for the switches are in the manual and use an ohm meter to test the switches in both the open(no continuity) and closed (continuity) positions for a possible faulty switch.

Expert:  Dan replied 1 year ago.

If the limit switch is ok check the wiring for problems

Expert:  Dan replied 1 year ago.

Hi Scott, Did you get this resolved?

Customer: replied 1 year ago.
No. Haven't resolved the issue but have significantly narrowed it down. When the lift is stowed, there is no creep speed (turtle position with joystick slightly pushed forward or reverse).
Joystick pushed all the way works fine in turtle.
In rabbit, both positions forward, and both positions reverse work fine with joystick.
When platform is elevated, no forward or reverse motion at all but I do hear the hydrolics flowing.
All 3 limit switches checked out fine.

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