980G Wheel Loader Warning Categories (Caterpillar Monitoring System) Caterpillar


Warning Categories (Caterpillar Monitoring System)
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1.1. Warning Category 1
2.1. Warning Category 2
3.1. Warning Category 3

The AVSpare Monitoring System provides three warning categories. The first category requires only operator awareness. The second warning category requires an operator response. The third warning category requires immediate shutdown of the machine.

Reference: Refer to Service Manual, SENR1394, "AVSpare Monitoring System" for service information.

Warning Category 1

In this category, only the alert indicators will flash. The warning requires attention from the operator. The warning identifies the system in need of attention.



Illustration 1g00656703

Parking Brake (1) - The parking brake is engaged and the transmission is in neutral. The alert indicator should flash during start-up. The alert indicator should go out when the parking brake is released.

Electrical System (2) - There is a malfunction in the electrical system. The system voltage is too high for normal machine operation or the system voltage is too low for normal machine operation.

If the electrical loads (air conditioning and/or lighting) are high and the engine speed is low, then increase the engine speed. This will generate more output from the alternator. If the alert indicator for the electrical system turns off within one minute, the electrical system is operating normally. Overload can occur during periods of low engine speeds.

Revise the operating cycle in order to avoid overloading the electrical system. Overloading the electrical system could result in discharging the batteries.

Low idle must be corrected. Adjust the low idle setting to the high side of low idle when the most common electrical loads are turned on. Reducing loads will also help. Use the medium fan speed instead of the high fan speed.

If this procedure does not cause the alert indicator to turn off, stop the machine and investigate the cause of the fault. The fault may be caused by an alternator belt that is loose or broken. Also, the batteries may be faulty.

If the light remains on near normal operating speeds and with light electrical loads, stop the machine and investigate the cause of the fault. The fault may be caused by an alternator belt that is loose or broken. Also, the batteries or the alternator may be faulty.

Fuel Level (3) - The fuel tank is at 10 percent capacity. Refuel as soon as possible.



Illustration 2g00656863

Note: The red area of the fuel level gauge also indicates that the fuel tank is at 10 percent capacity.

Secondary Steering (4) (if equipped) - When you turn the engine start switch to the ON position, the alert indicator for the secondary steering will come on for three seconds. Then, the alert indicator will go off. If the alert indicator for the secondary steering does not come on, investigate the cause of the fault. Do not operate the machine until the fault has been corrected.

Warning Category 2

In this category, the alert indicator and the action light will flash. A change in machine operation is required in order to reduce excessive temperatures in one or more of the systems.

Do not operate the machine if the alert indicator and the action light continues to flash after investigating the cause.



Illustration 3g00656857

Coolant Temperature (5) - This gauge indicates excessive coolant temperature. If the gauge needle is in the red area, stop the machine and investigate the cause of the fault.

Transmission Oil Temperature (6) - The gauge indicates excessive transmission oil temperature. If the gauge needle is in the red area, reduce the load on the machine. If the gauge needle is in the red area and the action light continues to flash after approximately five minutes, stop the machine and investigate the cause of the fault.

Hydraulic Oil Temperature (7) - The gauge indicates excessive hydraulic oil temperature. If the gauge needle is in the red area, reduce the load on the system. If the gauge needle remains in the red area, stop the machine and investigate the cause of the fault.

Warning Category 3

In this category, the alert indicator and the action light will flash and the action alarm will sound. Immediate shutdown of the machine is required in order to prevent severe damage to the system and/or to the machine.

Do not operate the machine until the fault has been corrected.



Illustration 4g00885792

Engine Oil Pressure (8) - The alert indicator indicates low oil pressure. If this alert indicator flashes, stop the machine immediately and engage the parking brake. Stop the engine and investigate the cause of the fault.

Parking Brake (9) - The alert indicator indicates that the parking brake is engaged. If the alert indicator flashes during operation, stop the machine immediately and engage the parking brake. Stop the engine and investigate the cause of the fault.

If the parking brake and the transmission are engaged during engine start-up, the alert indicator and the action light will flash and the action alarm will sound. Move the transmission control to the NEUTRAL position in order to stop the action alarm.

Brake Oil Pressure (10) - The alert indicator indicates low oil pressure to the brakes. If this alert indicator flashes, stop the machine immediately and engage the parking brake. Stop the engine and investigate the cause of the fault .

Electrical System (11) - The alert indicator indicates a serious malfunction in the electrical system. If this alert indicator flashes during operation, stop the machine immediately and engage the parking brake. Stop the engine and investigate the cause of the fault.

Hydraulic Oil Filter (12) - The alert indicator indicates a plugged hydraulic oil filter. If this alert indicator flashes during operation, stop the machine immediately and engage the parking brake. Stop the engine and investigate the cause of the fault.

Hydraulic Oil Level (13) - The alert indicator indicates low hydraulic oil level. If this alert indicator flashes during operation, stop the machine immediately and engage the parking brake. Stop the engine and investigate the cause of the fault.

Transmission Oil Filter (14) - The alert indicator indicates a plugged transmission oil filter. If this alert indicator flashes during operation, then stop the machine immediately and engage the parking brake. Stop the engine and investigate the cause of the fault.

Note: If the transmission oil filter is plugged, the bypass valve is open. Unfiltered transmission oil will flow through the system and damage to other system components may occur.

Primary Steering (15) - The alert indicator indicates a failure of the primary steering. The secondary steering (if equipped) should be automatically activated. If this alert indicator flashes during operation, stop the machine immediately and engage the parking brake. Stop the engine and investigate the cause of the fault.

Do not operate the machine until the fault has been corrected.

Note: Secondary steering only works while the machine is moving. No directional changes can be made when the machine operates under secondary steering.

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