Buhler 2425 - Manual (Page 149)

SECTION 2 - OPERATION
2-91
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.
1
2630
13.5
Figure 2-122