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I've got a 1999 GMC with an Altec Boom 60-foot the

I've got a 1999 GMC...
I've got a 1999 GMC with an Altec Boom 60-foot the Outriggers go out but the upper hydrolics will not engage . is there a relay that could have went bad ? or do you have a better idea of what the issue is .
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Answered in 1 day by:
2/21/2018
Jeremy
Jeremy, Technician
Category: Construction and Road Equipment
Satisfied Customers: 3,707
Experience: ASE Medium/Heavy Duty Technician, Hydraulics, Brakes, Electrical Certified
Verified

My name is ***** ***** I will assist you with your question today.

I'm an independent contractor and I don't get paid until a rating has been made.

We can go back and forth as needed to help resolve the issue you are having. Follow-ups are free after ratings, so rate with confidence!

Does that have the electronic solenoids on the controls If so, check the solenoids for the issue sounds more like a solenoid and not a relay. The solenoids will be at the spool valves for the controls and will activate the pump. They are like a 2 way switch. If one side of that solenoid is bad, you will get half the controls.

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Customer reply replied 1 month ago
Jeremy ,
I'm no mechanic by any means . In fact i don't know if my hydraulics are electric with a solenoid ? But i can assure you to get a five star .

They can be manual or electric. Those booms used both setups and with some, mixed them with electric up top and manual at the bottom.

Where the handle is at the bottom, you will see the block for the handles. If you see wires coming out and not just the hoses, then they are electric and most likely a solenoid is bad. If they are only hoses, then the valve needs to be pulled off and checked to see if there is a bad o-ring in the spool causing a bypass for that function instead of operating the function.

That is the easiest way to tell them both apart. :-)

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Customer reply replied 1 month ago
Thank you i will check that out tomorrow, and give you the 5 stars then im at dinner with my lovely lady now

Enjoy your dinner!

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Customer reply replied 1 month ago
Thank you

You're welcome.

Jeremy
Jeremy, Technician
Category: Construction and Road Equipment
Satisfied Customers: 3,707
Experience: ASE Medium/Heavy Duty Technician, Hydraulics, Brakes, Electrical Certified
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Jeremy
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