Perkins 904F-E28T Operation And Maintenance Manual page 32

32
Operation Section
Battery Disconnect Switch
Aftertreatment System
Diesel Oxidation Catalyst
Testing
Turning the keyswitch to the ON position will check
the indicator lights on the control panel. All the
indicator lights will be illuminated for 2 seconds after
the keyswitch is operated. Replace suspect bulbs
immediately.
Refer to Troubleshooting for more information.
Battery Disconnect Switch
(If Equipped)
Allow at least 2 minutes after the engine has stopped
before you turn the battery disconnect switch to OFF.
Disconnecting the battery power too soon will prevent
the engine Electronic Control Module (ECM) storing
information from the engine.
Not allowing the engine ECM time to store the
information from the sensors can damage the
emission control system.
Some applications, the engine can be equipped with
a wait to disconnect lamp. The wait to disconnect
lamp will be illuminated during engine operation and
will be extinguished approximately 2 minutes after
the engine has stopped.
Illustration 25
Battery disconnect switch label
NOTICE
Do not turn off the battery disconnect switch until the
indicator lamp has turned off. If the switch is turned
off when the indicator lamp is illuminated the Elec-
tronic Control Module (ECM) will stop storing informa-
tion from the engine sensors.
Never move the battery disconnect switch to the OFF
(DOC)
position while the engine is operating. Serious dam-
age to the electrical system could result.
Gauges and Indicators
Your engine may not have the same gauges or all the
gauges that are described. For more information
about the gauge package, see the OEM information.
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Gauges provide indications of engine performance.
Ensure that the gauges are in good working order.
Determine the normal operating range by observing
the gauges over a period.
Noticeable changes in gauge readings indicate
potential gauge or engine problems. Problems may
also be indicated by gauge readings that change
even if the readings are within specifications.
Determine and correct the cause of any significant
change in the readings. Consult your Perkins
distributor for assistance.
Some engine applications are equipped with
Indicator Lamps. Indicator lamps can be used as a
diagnostic aid. There are two lamps. One lamp has
an orange lens and the other lamp has a red lens.
These indicator lamps can be used in two ways:
• The indicator lamps can be used to identify the
current operational status of the engine. The
indicator lamps can also indicate that the engine
has a fault. This system is automatically operated
via the ignition switch.
• The indicator lamps can be used to identify active
diagnostic codes. This system is activated by
pressing the Flash Code button.
Refer to the Troubleshooting Guide, "Indicator
Lamps" for further information.
If no oil pressure is indicated, STOP the engine. If
maximum coolant temperature is exceeded, STOP
the engine. Engine damage can result.
g03265058
with SAE10W40 is 350 to 450 kPa (50 to 65 psi) at
rated rpm.
A lower oil pressure is normal at low idle. If the
engine speed and load are stable and the gauge
reading changes, perform the following procedure:
NOTICE
NOTICE
Engine Oil Pressure – The oil pressure
should be greatest after a cold engine is
started. The typical engine oil pressure
M0125147
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