GEAR 2223920 - Caterpillar

Alert Indicators
Illustration 5 g01078301
Parking Brake (4A) - This light indicates that the parking brake is engaged. If the machine is in neutral, only the indicator lights. However, if the machine is in FORWARD or REVERSE, the action lamp and the action alarm also activate.
Charging System (4B) - This light indicates that the battery voltage is outside the battery charge range. While the engine is running, the light also turns on when the alternator frequency is low.
Brake Oil Pressure (4C) - This light indicates that the axle oil pressure is low.
Brake Oil Temperature (Axle) (4D) - This light indicates that the brake oil temperature (axle) is high.
Transmission Oil Filter (4E) - This light indicates that the transmission oil filter is plugged.
If the transmission oil filter is plugged, the bypass valve will open. Unfiltered transmission oil will flow through the system and damage to other system components may occur.
Engine Oil Pressure (4F) - This light indicates that the engine oil pressure is low.
Inlet Air Temperature (4G) - This light indicates that the air inlet temperature is high.
Engine Overspeed (4H) - This light indicates that the engine speed is too high.
Fuel Pressure (4I) - This light indicates that the fuel pressure is low.
Hydraulic Oil Filter (4J) - The light indicates that the hydraulic oil filter is plugged and the bypass valve is open.
If the hydraulic oil filter is plugged, the bypass valve will open. Unfiltered hydraulic oil will flow through the system and damage to other system components may occur.
Display Window (4K) - The display window provides a digital readout that can show total operating hours of the engine (hour meter), current engine speed (tachometer), total travel distance (odometer), or active diagnostic codes. Also, the gauges in the gauge display may be monitored digitally in the display window.
Illustration 6 g01001702
Location of the Operator Mode Switch
Press the operator mode switch on the lower left side of the dashboard until the desired information is selected. The proper unit of measurement (°C, kPa, miles, km, rpm, liters, or service code) will be indicated at the top of the display window.
Hour meter (4L) - The total operating hours of the engine can be found here. Use the hour meter to determine maintenance intervals.Reference: For more information, refer to Service Manual, SENR1394, "Caterpillar Monitoring System".