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Hi, im Daniel, I need schematic electrical diagram for cat…

Hi, i'm Daniel, I need...
Hi, i'm Daniel, I need schematic electrical diagram for cat excavator 320. I'm working on the cat excavator 320 and the problem it has is that, when I raise throttle control, when the engine accelerate after a while it will reduce by itself, what could be the cause?
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Answered in 55 minutes by:
5/10/2014
Mechanic: catmastertech, Technician replied 8 years ago
catmastertech
catmastertech, Technician
Category: Construction and Road Equipment
Satisfied Customers: 3,994
Experience: Field service technician for CAT 19 years.
Verified

Hello Daniel, Try using the backup control switch. If the throttle works with the manual switch and holds steady, you may have a problem with the pressure switch to the controller. You should also try switching off the AEC button to set the engine to the dial speed and not automatically reduce it speed. AEC will drop the speed after 3 seconds when it does not see pressure from one of the switches.

 

If you need more help, let me know what you find with these tests and we can go from there. Please post the serial number with you reply.

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Customer reply replied 8 years ago


Thanks for your response. Yeah I tried using the backup switch with the manual switch and it worked well and holds steady. so what should I do then?

Mechanic: catmastertech, Technician replied 8 years ago
Replace the pressure switches on the main control valve. They signal the ecm when pressure is seen and that because the idle to raise. If you have no input form the switch, it goes back to idle.
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Customer reply replied 8 years ago


Is night here I'm not at the machine now, in a day time i'll get back to you to provide u with the serial number.


 


Is there anyway I can connect to you anytime rather than here?


 


Thanks


 


Regards

Mechanic: catmastertech, Technician replied 8 years ago

I won't need the serial number unless you are in need of something more specific.

I will be away during the day (US Eastern) but, I will be checking in occasionally. I only have limited access until I get back home to this pc. Then I can help you further.

I will receive an email when you post something and I can contact you afterward.

catmastertech
catmastertech, Technician
Category: Construction and Road Equipment
Satisfied Customers: 3,994
Experience: Field service technician for CAT 19 years.
Verified
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catmastertech
catmastertech, Technician
Category: Construction and Road Equipment
Satisfied Customers: 3,994
3,994 Satisfied Customers
Experience: Field service technician for CAT 19 years.

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