Construction and Road Equipment

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I have a CAT 279D and the boom is disabled. Give me one

Customer Question
I have a CAT...

I have a CAT 279D and the boom is disabled

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

Give me one minute

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

SN: GTL03347 Model: 279D

Mechanic's Assistant: Anything else you want the equipment mechanic to know before I connect you?

I used the manual and tried several things; the machine got stuck in the mud last week. we got it out but the boom does not work. It shows a symbol indicating the hydraulic system is locked

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. The Heavy Equipment Mechanic I'm going to connect you with knows all the tricks and shortcuts.

The only thing we have not tried is disconnect the battery

Submitted: 7 months ago.Category: Construction and Road Equipment
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Customer reply replied 7 months ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call.
Customer reply replied 7 months ago
Let me know if you need more information, or send me the service offer(s) so we can proceed.
Answered in 38 minutes by:
1/13/2018
Mechanic: Curtis B., Technician replied 7 months ago
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 31,876
Experience: Technican turned service manager with multiple lines of equipment and rental units.
Verified

Hello! Let's see if we can work together and come to a satisfactory conclusion!

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Mechanic: Curtis B., Technician replied 7 months ago

Th safety system for the seat belt/seat/or lap bar, all have to be made before the hydraulics will unlock. One of the switches or the wiring to them is likely the problem.

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Customer reply replied 7 months ago
I have resolved the issue. The contact (blue) inside the door was not touching the contact mounted on the door frame. This was causing the hydraulic system to lock...
Thanks
Mechanic: Curtis B., Technician replied 7 months ago

Good job! I knew it had to be a safety switch! Use the 5-star system to close the question. Thanks.

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Mechanic: Curtis B., Technician replied 7 months ago

I see the question is still open, did you see my response?

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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