Perkins 904J-E36TA Operation And Maintenance Manual page 45

M0092609-05
• 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.
NOTICE
If no oil pressure is indicated, STOP the engine. If
maximum coolant temperature is exceeded, STOP
the engine. Engine damage can result.
Engine Oil Pressure – The oil pressure
should be greatest after a cold engine is
started. The typical engine oil pressure
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:
1. Remove the load.
2. Stop the engine.
3. Check and maintain the oil level.
Jacket Water Coolant Temperature –
Typical temperature range is 82° to 94°C
(179.6° to 169.2°F). This temperature
range will vary according to engine load and the
ambient temperature.
A 100 kPa (14.5 psi) radiator cap must be installed
on the cooling system. The maximum temperature for
the cooling system is 108° C (226.4° F). This
temperature is measured at the outlet for the water
temperature regulator. The engine coolant
temperature is monitored by the engine sensors and
the engine ECM. This programming cannot be
altered. Derates can occur if the maximum engine
coolant temperature is exceeded.
If the engine is operating above the normal range,
reduce the engine load. If high coolant temperatures
are a frequent event, perform the following
procedures:
1. Reduce the load on the engine.
2. Determine if the engine must be shut down
immediately or if the engine can be cooled by
reducing the load.
3. Inspect the cooling system for leaks. If necessary,
consult your Perkins dealer or your Perkins
distributor for assistance.
Tachometer – This gauge indicates
engine speed (rpm). When the throttle
control lever is moved to the full throttle
position without load, the engine is running at
high idle. The engine is running at the full load
rpm when the throttle control lever is at the full
throttle position with maximum rated load.
NOTICE
To help prevent engine damage, never exceed the
high idle rpm. Overspeeding can result in serious
damage to the engine. Operation at speeds exceed-
ing high idle rpm should be kept to a minimum.
Ammeter – This gauge indicates the
amount of charge or discharge in the
battery charging circuit. Operation of
the indicator should be to the " " +" " side of " " 0" "
(zero).
Fuel Level – This gauge indicates the
fuel level in the fuel tank. The fuel level
gauge operates when the " " START/STOP" "
switch is in the " " on" " position.
Service Hour Meter – The gauge
indicates total operating hours of the
engine.
Indicator Lamps
• Shutdown lamp
• Warning lamp
• Low oil pressure lamp
• Wait to start lamp (Glow plug warning lamp)
For information, refer to this manual, "Monitoring
System (Table for the Indicator Lamps)" for the
sequence of operation of the shutdown lamp and the
warning lamp.
The function of the wait to start lamp is automatically
controlled at engine start-up.
The function of the low oil pressure lamp is controlled
by the engine ECM. If low oil pressure is detected,
the lamp will be illuminated. The reason for the
illumination of the low-pressure lamp should be
investigated immediately.
The glow plug warning lamp will flash to show that
the engine is being held at low speed. This function
will be performed at engine starting and the duration
will depend on ambient temperature and engine
temperature.
45
Operation Section
Gauges and Indicators