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SECTION 2 - OPERATION
2-75
Low Engine Oil Pressure
(below 100 kPa (15 psi))
The Electronic Instrument Control System will
notify the operator that the engine lubrication oil
pressure has dropped to a point that will no
longer provide adequate lubrication to the
engine. Simultaneously, the module of the
Cummins engine will begin an engine derate
sequence that will protect the engine from harm
due to low oil pressure. The engine may be
receiving oil, but it may not be providing
sufficient lubrication causing possible engine
damage. See “Engine” in Section 4 of the
Operator’s manual for possible causes of low
engine oil pressure. Failure to correct the
low-- pressure condition can cause serious
damage to the engine. The following description
details the reaction of the EICS, Cummins
Module and audible alarm in the event of low
engine oil pressure (below 100 kPa (15 psi)):
With the engine running, and the engine oil
pressure at the low pressure point (100 kPa (15
psi)), the oil pressure warning light, 1, will
illuminate on the warning light bar. The audible
alarm will beep rapidly for 10 seconds with the
word “STOP” flashing in the upper portion of the
monitor. The lower portion of the monitor will
flash all of the symbols related to the rotary
select switch. Any numerical display in the lower
portion of the monitor, regardless of the position
of the rotary select switch, will be gone. This is
called the pre--alarm sequence of the monitor.
During the 10--second time period of the
pre--alarm sequence, the Operator can press
the acknowledge/reset button on the dash
panel. This will stop the EICS in the pre--alarm
stage and keep it from progressing into the full
critical alarm stage. The engine will continue to
run, but the EICS will stay in the pre--alarm
stage. This will allow the Operator to move the
tractor from an undesirable location and make
repairs.
ATTENTION: If the low engine oil pressure
warning sequence is stopped in the pre--alarm
stage, the engine will continue to run while not
receiving adequate amounts of lubrication.
Serious engine damage can result from running
the engine in this condition. It is imperative that
the low engine oil pressure condition be
investigated as soon as possible so as to avoid
serious engine damage.
1
Figure 2-108