BOLT 9X6494 - Caterpillar

Instrument Panel Gauges
After the engine starts, and at frequent intervals while the engine is operating, the gauges should be observed. Determine the normal reading for each gauge. Investigate the cause whenever there is a significant change in the reading.Your engine may be equipped with calibrated gauges. Periodic monitoring and recording of the gauge readings will provide a performance history of the engine. As certain conditions develop, a change in a reading will indicate a problem is developing. The necessary repairs can be scheduled before the failure and unexpected downtime occurs.
INSTRUMENT PANEL GAUGES 1. Tachometer.2. Left inlet manifold temperature.3. Right inlet manifold temperature.4. Left and right exhaust manifold temperatures.5. Engine oil temperature.6. Engine jacket water temperature.7. Engine oil pressure.8. Fuel pressure.9. Marine gear oil temperature.10. Marine gear oil pressure.11. Ammeter.
GAUGE
8. Fuel Pressure.Tachometer
The tachometer (1) indicates engine RPM. When the governor control lever is moved to the full speed position, without load, the engine is running at high idle. When the governor control lever is moved to the full speed position and load is applied, the engine will slow slightly to full load speed. The high idle RPM and the full load RPM are stamped on the engine's Altitude Information Plate. The engine can be operated between these two speed limits for long periods of time without shortening engine life.If the engine speed drops below full load speed with the governor control lever positioned in the full governed position, the engine will be operating in a lug condition. Lugging of a marine engine for long periods of time will require servicing of the engine more frequently than is stated in the LUBRICATION AND MAINTENANCE CHART; and shorter life of engine components can be expected.Engine Oil Pressure
Oil pressure reading (7) will be greatest after starting a cold engine. Oil pressure will decrease as the engine warms while idling. As the engine speed is increased to full load speed, oil pressure will increase into the NORMAL range and stabilize.If the gauge reading fluctuates:1. Remove the load.2. Reduce engine speed to low idle.3. Check the oil level. Maintain the oil level between the ADD and FULL marks on the dipstick. If the reading continues to fluctuate, contact your Caterpillar dealer.If the gauge reading decreases at rated speed, the oil filter elements may be plugged. Check the oil filter service indicator (where provided) or change the oil filter elements. IF OIL PRESSURE DROPS RAPIDLY AT RATED SPEED, STOP THE ENGINE IMMEDIATELY.Engine Jacket Water Temperature
The water temperature reading (6) may vary according to load, but should never exceed the boiling temperature for the pressurized system being used.If the engine operates with the indicator in the HOT range and steam becomes apparent:1. Reduce the load and speed.2. Inspect for pressure steam or water leaks. Determine if the engine must be shut down immediately; or if the engine can be safely cooled by reducing the load.
Do not add cold water to a hot engine. Cracking of engine components may occur. Allow the engine to cool; then add