SEBU7833-03
27
Operation Section
Gauges and Indicators
Gauges and Indicators
i02164190
Gauges and Indicators
Your engine may not have the same gauges or all of
the gauges that are described. For more information
about the gauge package, see the OEM information.
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 of time.
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 dealer
or your Perkins distributor for assistance.
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
SAE10W30 is 207 to 413 kPa (30 to 60 psi) at rated
rpm.
A lower oil pressure is normal at low idle. If the load
is stable and the gauge reading changes, perform
the following procedure:
1.
Remove the load.
2.
Reduce engine speed to low idle.
3.
Check and maintain the oil level.
Jacket Water Coolant Temperature –
Typical temperature range is 71 to 96°C
(160 to 205°F). The maximum allowable
temperature with the pressurized cooling system at
48 kPa (7 psi) is 110°C (230°F). Higher temperatures
may occur under certain conditions. The water
temperature reading may vary according to load. The
reading should never exceed the boiling point for the
pressurized system that is being used.
If the engine is operating above the normal range
and steam becomes apparent, perform the following
procedure:
1.
Reduce the load and the engine rpm.
2.
Inspect the cooling system for leaks.
3.
Determine if the engine must be shut down
immediately or if the engine can be cooled by
reducing the load.
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. The engine can be operated
at high idle without damage, but should never be
allowed to exceed high idle rpm.
Ammeter –
This gauge indicates the
amount of charge or discharge in the
battery charging circuit. Operation of the
indicator should be to the right 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
operating time of the engine.
This document is printed from SPI². Not for Resale.
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