RELAY AS 2984948 - Caterpillar

Indicators
The main display module includes 16 alert indicator lamps (2) and two signal indicator lamps (1). The alert indicator lamps monitor machine systems of the motor grader. The main display module also contains one digital display window (4). Digital display window (4) will display important numeric readouts for different machine systems, and the machines speed.
Illustration 2 g01313478
Warning Category 1
In this category, only the alert indicator comes on. This category alerts the operator that the machine system needs attention. The following alert indicators can be illuminated with Warning Category 1:
Engine system (5)
Implement system (6)
Parking brake (8)
Brake system (9)
Hydraulic oil temperature (11) Warning Category 2
In this category, the alert indicator and action light (7) comes on. This category requires a change in machine operation in order to reduce excessive temperature in one or more of the machine systems.In this category, only the alert indicator comes on. This category alerts the operator that the machine system needs attention. The following alert indicator can be illuminated with Warning Category 2:
Engine system (5)
Implement system (6)
Parking brake (8)
Brake system (9)
Hydraulic oil temperature (11)
The operator is not present indicator (10) .Warning Category 3
In this category, the alert indicator and the action light come on and the action alarm sounds. This category requires immediate shutdown of the machine in order to prevent injury or death. This category requires immediate shutdown of the machine in order to prevent severe damage to the machine. The following alert indicators can be illuminated with Warning Category 3:
Engine system (5)
Implement system (6)
Parking brake (8)
Brake system (9)
Hydraulic oil temperature (11) Note: Stop the machine immediately if all of the following conditions occur:
The alert indicator turns on.
The action light (7) turns on.
The action alarm sounds.Engage the parking brake and stop the engine. Investigate the cause of the problem.Do not operate the machine until the cause of the problem has been corrected.Gauges
Illustration 3 g01313635
The engine coolant temperature is shown on gauge (12). The gauge receives a signal from the engine coolant temperature sensor (18). The hydraulic oil temperature is shown on gauge (13). The gauge receives a signal from the hydraulic oil temperature sensor (15) .Location of Solenoids, Switches, and Sensors
Solenoids, switches, and sensors are monitored by the monitoring system. This section shows the locations of the solenoids, switches, and sensors that are part of the braking and the hydraulic fan system.Note: Refer to the Power Train Systems Operation/Testing and Adjusting for information regarding the parking brake and parking brake components for your machine.
Illustration 4 g02162233
(14) Limit switch for the brake pedalLimit switch (14) for the brake pedal is used to turn on the brake lights whenever the brake pedal is depressed.
Illustration 5 g02162174
View of the rear of the machine (15) Hydraulic oil temperature sensor
Illustration 6 g01376839
View of the left side of the transmission (16) Pressure sensor (17) Parking brake solenoidThe hydraulic oil temperature sensor (15) sends a signal to the engine Electronic Control Module (ECM) to control the speed of the hydraulic fan. The pressure sensor (16) for the parking brake sends a signal that turns on the