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Curtis B.
Curtis B., Technician
Category: Agriculture and Farm Equipment
Satisfied Customers: 3110
Experience:  Technican turned service manager on multiple lines of equipment and rental equipment.
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I have a L4400DT tractor. I would like to know what the OPC

Customer Question

I have a L4400DT tractor. I would like to know what the OPC timer does? I am having intermittent fuel pump solenoid connections. I have changed PTO micro switches, Neutral lever micro switches, Ignition switch, Injector solenoid, OPC seat switch and cleaned all battery terminals including ground. The problem continues please help.
Submitted: 11 months ago.
Category: Agriculture and Farm Equipment
Expert:  Curtis B. replied 11 months ago.

OPC 'operator presence control' or seat switch. It is a delay timer, that gives delay on killing engine , if you lift weight off the seat in error. Is the fuel solenoid connection loosing voltage, causing engine to die, or will not start. ??

Expert:  Curtis B. replied 11 months ago.

What is happening?