MANIFOLD AS 4P1451 - Caterpillar

High Coolant Temperature (7) - This indicator will light if the coolant temperature exceeds the boiling temperature of the pressurized cooling system.
Low Coolant Temperature (8) - This indicator will light if the coolant temperature is below the normal operating temperature.
Coolant Level (9) - The low coolant level indicator will light if the coolant level falls below normal.
Low Fuel Level (10) - The low fuel level indicator illuminates when the level of fuel in the fuel tank is low. Gauge Cluster Modules
Illustration 2 g01144260
Engine Oil Pressure (1) - The engine oil pressure gauge indicates the pressure of the engine oil. The engine oil pressure will be highest after a cold engine is started. The engine oil pressure will decrease as the engine warms up. The engine oil pressure will increase when the engine rpm is increased. The engine oil pressure will stabilize when the engine rpm is stable. The typical range for engine oil pressure at low idle rpm is 186 to 344 kPa (27 to 50 psi). The typical range for engine oil pressure at rated rpm is 275 to 600 kPa (40 to 87 psi).
Coolant Temperature (2) - The coolant temperature gauge indicates the temperature of the engine coolant. The coolant temperature may vary according to the load. The coolant temperature should never be allowed to exceed the boiling temperature of the pressurized cooling system. The operating range for coolant temperature is 88 to 100 °C (190 to 210 °F). Higher temperatures may occur under certain conditions. The sensor for coolant temperature is to be fully submerged in order to detect the temperature correctly. If the engine is operating above the normal temperature range, perform the following procedure:
Reduce the load and reduce the engine rpm.
Inspect the cooling system for leaks.
Determine if the engine must be shut down immediately or if the engine can be cooled by reducing the load.
System Voltage (3) - This meter indicates the voltage of the electrical system. The meter normally indicates 24 V. Inspect the charging system if either of the following conditions are observed:
Less than 24 V during normal operation
An excessive charge during normal operation
Fuel Pressure (4) - Fuel pressure is measured at the rated speed. The fuel pressure gauge indicates the fuel pressure to the fuel injection pump from the fuel filter. Nominal fuel pressure is 448 kPa (65 psi). Maximum fuel pressure is 607 kPa (88 psi). Minimum fuel pressure is 303 kPa (44 psi). A decrease in fuel pressure usually indicates a dirty fuel filter or a plugged fuel filter. As the fuel filter becomes plugged, there will be a noticeable reduction in the engine performance.
Illustration 3 g01144261
Exhaust Temperature (1) - The gauge for the exhaust temperature indicates exhaust gas temperature. Maximum exhaust temperature is approximately 575°C (1065°F).
Inlet Air Restriction (2) - The gauge for the inlet air restriction indicates the difference in air pressure. The difference is between the inlet side and the engine side of the air filter element. The air restriction is measured at the air inlet to