Buhler 2360, 2335, 2425, 2290, 2375 manual Engine Overspeed Condition

SECTION 2 - OPERATION

Engine Overspeed Condition

The engine control module monitors engine speeds (rpm) during normal tractor operation. The module will protect the engine from an overspeed condition anytime it senses engine speed above 2630 rpm. Overspeed can damage internal engine components (especially valve train components), causing severe failure of the engine.

An example of this would be a tractor that is towing an implement and operating at the full throttle position (e.g. transporting the tractor over the road). If the tractor was to go down an incline, the implement could begin to push the tractor, causing the drivetrain to overspeed the engine. If the engine speed reaches 2630 rpm, the module will illuminate the red engine warning light, 1, on the EICS light bar. The module will also cut power off to the fuel solenoid valve on the fuel pump so as to slow the engine down and prevent damage to internal components. When the engine speed drops below 2630 rpm, the red engine warning light will go out. When engine speed drops below 2000 rpm, the module will re-apply power to the fuel solenoid valve, and the engine will return to normal operation.

The Operator cannot cancel or interrupt the engine overspeed protection sequence from occurring on the engine. The module does not recognize activation of, nor is it tied into the EICS acknowledge/reset button on the dash of the tractor.

WARNING: KEEP THE TRACTOR IN GEAR WHEN GOING DOWNHILL. DO NOT SHUT THE TRACTOR ENGINE OFF, OR SHIFT THE TRANSMISSION TO NEUTRAL. USE A LOW GEAR TO MAINTAIN CONTROL WITH MINIMUM BRAKING. NEVER COAST THE TRACTOR DOWNHILL.

WARNING: TOWED LOADS THAT WEIGH MORE THAN THE WEIGHT OF THE TRACTOR SHOULD HAVE BRAKES FOR SAFE OPERATION. ENSURE COMPLIANCE WITH LOCAL REGULATIONS.

2630

13.5

1

Figure 2-122

2-91