299D and 299D XHP Compact Track Loaders and 272D and 272D XHP Skid Steer Loaders Monitoring System Caterpillar

Instrument Cluster (IC) Monitoring System Displays

The two IC Monitoring System Displays show information in the following four ways:

• Driver Alert and Status Indicators

• Digital Display Windows

• Gauges

• Audible Alarm

Illustration 1	g02849132
IC Monitoring System Displays (22) Left Side Instrument Cluster (23) Right Side Cab Display (24) Fuel Level Gauge (25) Left Side Digital Display Window (Service Hour Meter) (26) Engine Coolant Temperature Gauge (27) Hydraulic Oil Temperature (28) Alternator Output Indicator (29) Parking Brake Indicator (30) Driver Alert Indicator (31) Operator Present Indicator (32) Work Tool System Indicator (33) Hydraulics Indicator (34) Hydraulic High Flow Indicator (35) Engine Condition Indicator (36) Machine Security System (MSS) Indicator (37) Alternate Joystick Control Pattern 2 Indicator (38) Continuous Flow Indicator (39) Air Inlet Heater Indicator (40) Right Side Digital Display Window (41) Scroll Up Button (42) Scroll Down Button (43) Select Function Button (44) Two Speed Control Indicator (45) Creeper Control Indicator (46) Ride Control Indicator (47) Caterpillar Joystick Control Pattern 1 Indicator (48) Work Tool Level Control Indicator (49) DPF Needs Regeneration Indicator

Alert Indicator

Driver Alert Indicator (30) - The Driver Alert indicator will activate when there is a problem that requires operator attention.

Note: Status indicators that light or the gauges may help troubleshoot the cause of any problems.

See this System Operation, "Warning Operation" section of this manual for details.

Status Indicators

Alternator Output Indicator (28) - The Alternator Output indicator will illuminate if there is a malfunction in the electrical system. If this alert indicator comes on, the system voltage is too high for normal machine operation or too low for normal machine operation.

Increase the engine speed to high idle if the electrical loads are high. The electric loads consist of the air conditioning and/or the lighting. An alternator will generate more output when the engine is at high idle. If the Alternator Output indicator turns off within 1 minute, the electrical system is operating normally. However, the electrical system may be overloaded during periods of low engine speeds.

Increase the engine idle speed with the engine speed control knob or pedal, to compensate for a higher electrical load on the system.

Run the engine speed at normal RPM. Run the electrical system at a light load. If the Alternator Output indicator remains on, move the machine to a convenient location. Investigate the cause of the problem. The cause may be a loose alternator belt, a broken alternator belt, a faulty battery, or a faulty alternator.

Parking Brake Indicator (29) - The Parking Brake indicator illuminates when the parking brake is engaged. The alert indicator should come on during start-up. The alert indicator should go out when the parking brake is disengaged.

Operator Present Indicator (31) - The Operator Present indicator will illuminate when the armrests are in the RAISED position. The alert indicator will light when the operator gets out of the operator seat. The alert indicator should go out when the operator is in the operator seat and the armrests are in the LOWERED position.

Hydraulic High Flow Indicator (34) - The Hydraulic High Flow indicator will illuminate when the high flow hydraulic system is activated.

Note: Fully displace the thumb wheel on the joystick, in order to activate the high flow hydraulic system.

Note: High flow mode requires an electrical connection that is located on the loader arm. Refer to Operation and Maintenance Manual, "Work Tool Coupler Operation" or Operation and Maintenance Manual, "Work Tool Operation" for additional details.

Continuous Flow Indicator (38) - The Continuous Flow indicator will illuminate when the continuous flow is activated.

Work Tool Indicator (32)

Illuminated Red - The Work Tool indicator will illuminate red when the implement lockout is activated.

Illuminated Amber - The Work Tool indicator will illuminate amber when the interlock override is activated.

Hydraulics Indicator (33)

Illuminated Red With Audible Alert - The Hydraulics indicator will illuminate red and an audible alert will sound when the temperature of the hydraulic oil is too high. If this indicator comes on, stop the machine immediately. Stop the engine and investigate the problem.

Illuminated Amber - The Hydraulics indicator will illuminate amber when the hydraulic oil filter is not functioning properly. Stop the machine and replace the oil filter. The Hydraulics indicator will remain on until the hydraulic oil has warmed up. Do not operate the machine until the light turns off.

Air Inlet Heater Indicator (39) - The Air Inlet Heater indicator will illuminate when the Air Inlet Heater is activated. The Air Inlet Heater is activated with the engine start switch in the ON position. The operator should wait until theAir Inlet Heater indicator is no longer illuminated before starting the machine. Refer to Operation and Maintenance Manual, "Engine Starting" for more information about the Air Inlet Heater.

Engine Indicator (35)

Illuminated Red With Audible Alert - The Engine indicator will light red and an audible alert will sound when the engine coolant temperature is too high. If this alert indicator comes on, stop the machine immediately. Stop the engine and investigate the cause.

Illuminated Red With Audible Alert - The Engine indicator will light red and an audible alert will sound when the engine oil pressure is low. If this alert indicator comes on, stop the machine immediately. Stop the engine and investigate the cause.

Illuminated Amber - The Engine indicator will light amber when the air cleaner indicator is activated. If this alert indicator comes on, stop the machine and service the air cleaner.

Optional Machine Security System (MSS) Indicator (36) - The Machine Security System (MSS) indicator will illuminate when the Machine Security System is activated. Machines that are equipped with a Caterpillar MSS can be identified by a decal in the operator station. MSS is designed to prevent theft of the machine or unauthorized operation.

Basic MSS Operation - MSS may be programmed to read a standard Caterpillar key or an electronic key. The electronic key contains an electronic chip within the plastic housing of the key. Each key emits a unique signal to the MSS. The keys can be identified by a gray housing or a yellow housing. MSS can have programmed settings to require an electronic key or a standard Caterpillar key for starting during certain periods of time. When the key start switch is turned ON, the ECM will read the unique ID stored in the electronic key. The ECM will then compare this ID to the list of authorized keys. The status light is located on the alert indicator panel. If the light is on, the key is not authorized.

Note: MSS will not shut down the machine after the machine has started.

Security Management - The MSS allows you to program the system to automatically activate at different time periods with different keys. The MSS can also be programmed to reject a specific electronic key after a selected date and time. Turning the key to the OFF position with the MSS active allows a 30 second interval to restart the machine with an unauthorized key. Also if the machine stalls, there is a 30 second interval for restarting the machine. This 30 second interval is counted from the time of turning the key to the OFF position.

Note: Know the machine settings. The use of an electronic key is no guarantee that the machine can be restarted.

An expiration date can be set for each electronic key that is contained in the list of keys for the machine. The key will no longer start the machine when the internal clock in the security system passes the expiration date. Each entry in the list of keys can have a different expiration date.

Spare keys are available from your dealer. Before a key can operate the machine, the MSS must be set to accept that particular key. Contact your Caterpillar dealer for information on additional features of the MSS.

Two-Speed Control Indicator (44) - The Two-Speed Control indicator will illuminate when rabbit mode is selected with the two speed control.

Note: The Left Hand Trigger Multifunction switch must be in the correct position in order to allow activation of the Two-Speed mode by the trigger.

Creeper Control Indicator (45) - The Creeper Control indicator will illuminate when creeper mode is selected.

Ride Control Indicator (46) - The Ride Control indicator will illuminate when the Ride Control is "ON" and the necessary ground speed is reached for Ride Control activation.

Joystick Control Pattern 1 Indicator (47) - Machines equipped with the Selectable Control Pattern option: The Joystick Control Pattern 1 indicator will illuminate when the Caterpillar Joystick Control Pattern is activated. If your machine does not have the Dedicated Control Pattern, the Joystick Control Pattern 1 indicator will flash until a selection is made.

Note: Refer to Operation and Maintenance Manual, "Operator Controls - Joystick Controls" for information about the joystick control patterns.

Alternate Joystick Control Pattern 2 Indicator (37) - Machines equipped with the Selectable Control Pattern option: The, the Alternate Joystick Control Pattern 2 indicator will illuminate when the Alternate Joystick Control Pattern is activated. If your machine does not have the Dedicated Control Pattern, the Alternate Joystick Control Pattern 2 indicator will flash until a selection is made.

Note: Refer to Operation and Maintenance Manual, "Operator Controls - Joystick Controls" for information about the joystick control patterns.

Work Tool Level Control Indicator (48) - This indicator will illuminate when the Self Level System is activated. The indicator will blink twice when the operator-selected target angle is established.

D P F Needs Regeneration Indicator (49) - This indicator will illuminate when the Engine Particulate Filter needs regeneration.

Digital Display Windows

Digital Display Windows - The digital display windows provide readouts that show the following items:

Left Side Digital Display Window (25) - The left side Digital Display window displays the Service Hour Meter (SHM).

The SHM displays the hours of machine operation. This feature is also referred to as the total operating hours of the machine. Use this display in order to determine the service hour maintenance intervals.

The functions of the SHM are listed below.

1. The functions of the SHM in a system without a synchronized system clock follow:

   1. If the speed of the engine is greater than 150 RPM, or the frequency at the alternator R terminal is greater than 20 Hz:
      • Hours will accumulate in tenth hour increments.

      • Hours are logged in 6 minute intervals.

   2. If the speed of the engine is less than 200 RPM , or the frequency at the alternator R terminal is less than 50 Hz :
      • The hours will retain the currently stored value.

      • When the maximum value is reached, the maximum value will remain in memory until a reset is performed. Cat Electronic Technician is used in order to make a reset.

2. The functions of the SHM in a system with a synchronized system clock follow:
   • The SHM will operate within the requirements of the synchronized system clock.

   Note: The D model Steer Skid Loaders support the synchronized system clock.

3. Following is the operation of the SHM during powerup:
   • A machine Shut Down that is followed by a machine Restart is known as a Key Switch Cycle. A Key Switch Cycle has a resultant loss of 6 minutes. On powerup, the SMH begins counting at 3 minutes.

Note: Some applications will display the SMH with the key in the OFF position.

Right Side Digital Display Window (40) - The right side digital window displays four Operator Modes and eight Service Modes.

See this System Operation, "Operator Modes " for details on the Operator modes. See this System Operation, "Service Modes " for details on the Service modes.

Gauges

Fuel Level Gauge (24) - The fuel level gauge indicates the amount of fuel that remains in the fuel tank. A gauge needle in the red zone indicates a low fuel level.

Engine Coolant Temperature Gauge (26) - The water temperature regulator regulates the coolant temperatures. If the gauge needle just enters the red zone, the coolant temperature is 110° C (230° F). Increased temperatures will sound the warning alarm. Continued operation of the machine during the sounding of the warning alarm or the gauge needle in the red zone may damage the engine. Stop the machine in a safe place and investigate the cause.

Hydraulic Oil Temperature Gauge (27) (SHY1-387), (HCL1-705), (NLC1-600), and (GSL1-606) - This gauge indicates the temperature of the hydraulic oil in the hydraulic oil sump for the steering and implement circuits. If the gauge needle enters the red zone, the hydraulic system oil is approaching 93 °C (200 °F). The Advisor Panel will display a warning. If necessary, reduce the load that is on the machine until the hydraulic oil temperature decreases.

Hydraulic Oil Temperature Gauge (27) (SHY388-UP), (HCL706-UP), (NLC601-UP), and (GSL607-UP) - This gauge indicates the temperature of the hydraulic oil in the hydraulic oil sump for the steering and implement circuits. If the gauge needle enters the red zone, the hydraulic system oil is approaching 96 °C (200 °F). The Advisor Panel will display a warning. If necessary, reduce the load that is on the machine until the hydraulic oil temperature decreases.

Action Alarm

Illustration 2	g01262691
Action Alarm (48) Alarm (49) Schematic symbol

The action alarm (48) provides the operator with an audible warning. The warning is sounded when an abnormal machine condition is present.

Note: See the Systems Operation, "Warning Operation" section of this manual for additional information.

Display Connectors