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I have a jlg 600s will drive forward but not reverse, 1998…

Customer Question
I have a jlg...

I have a jlg 600s will drive forward but not reverse

Mechanic's Assistant: What is the complete model and serial number of your machine?

1998 600s serial is 064236(###) ###-####

Mechanic's Assistant: Are you fixing this yourself? What have you tried so far?

Hoping to yes and iv replaced the drive contol in the basket but not to sure where to go from here

Submitted: 11 months ago.Category: Industrial Equipment
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Answered in 13 minutes by:
9/7/2017
Mechanic: Curtis B., Technician replied 11 months ago
Curtis B.
Curtis B., Technician
Category: Industrial Equipment
Satisfied Customers: 31,907
Experience: Technican turned service manager on multiple lines of equipment used in industry.
Verified

Hello! Let's see if we can can work together to get to the root of your question!

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Mechanic: Curtis B., Technician replied 11 months ago

What happens if you rotate the boom 180 degrees, and try to drive.

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Customer reply replied 11 months ago
it does the same thing when it gets warm it works of and on but not 100%
Mechanic: Curtis B., Technician replied 11 months ago

Swap the forward/reverse valves in the main control valve . Likely the reverse valve is not opening when it should. Can be the coil, but more likely the internal valve.

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