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machine stability. The variable gauge is located in the center of the display panel. As the load on the machine increases, the indicator moves through the green zone toward the red zone of the gauge. The scale on the gauge has three colored zones. Green Zone (25) - The machine is operating within the limit of forward longitudinal stability. Amber zone (26) - The limit for the forward longitudinal stability of the machine has been reached or exceeded. Red zone (27) - The limit for the forward longitudinal stability of the machine has been exceeded. When the visual indicator (24) enters the amber zone an audible alarm will sound continuously and a visible warning lamp (2) will begin to light. This audible signal indicates that the limit of longitudinal stability has been reached or exceeded. When this condition occurs, do not proceed with the lift operation. Retract the boom if the boom is extended. If the boom is retracted, return the load to the original position. If the indicator is not in the amber zone or the red zone, the alarm may be caused by another system. Check the other gauges for the indication of other problems. Change the operation of the machine.
83 Operation Section lamp will be illuminated. Refer to Operation and Maintenance Manual, "Longitudinal Stability Indicator System - Test" for more information if the test fails. Another function of the system is the auto adjustment. When the machine is turned from the OFF position to the ON position, the machine will perform an automatic adjustment of the LSI. This adjustment will depend on the state of the machine upon turning the ignition to the ON position. For optimum performance of the LSI system, the machine should be parked in the following manner: • Park the machine on level ground. • Fully retract the boom. • If equipped, fully raise the stabilizers. • Fully lower the boom. • Unload the work tool and gently rest the work tool on the ground. • Remove the trailer from the hitch. The LSI system will be more sensitive if the machine is not parked in this manner. The LSI will enter the amber zone and the alarm will be activated with lighter loads on the work tool. In order to return the system to optimum performance, perform the following actions: • Park the machine in the state that is mentioned above.
Extending the boom or lowering a raised boom further increases the outreach of the load. This can reduce the forward stability of the machine. Machine tip over could result. If the longitudinal stability indicator shows that the machine stability limit is being approached, do not lower or further extend the boom. Retract the boom before lowering. Machine tip over could cause personal injury or death to the operator or other personnel in the work area.
The visual indicator (24) and the audible alarm may operate momentarily when the machine is traveling with a load on the work tool. This may occur more frequently on uneven ground or rough terrain. Turning the steering system onto the full lock may also cause unexpected operation of the visual alarm and the audible alarm. When the ignition of the machine is turned from the OFF position to the ON position, the machine will perform the system test for the LSI. Refer to Operation and Maintenance Manual, "Longitudinal Stability Indicator System - Test" for more information. If the system passes the test for the LSI, the machine may be operated as normal. If the LSI system should detect a problem, the machine will fail the system test. This will cause indicator (24) to hold in the red zone (27). An intermittent audible alarm will sound and the warning
• Turn the ignition to the OFF position. • Wait for 30 seconds. • Start the machine and resume operation. If any changes are made to the standard machine configuration of the Telehandler, the system may need to be recalibrated. Consult your Caterpillar dealer for recalibration of the LSI. The following situations are conditions that require recalibration: • The type of wheels on the rear axle are changed. • The type of tires on the rear axle are changed. • The tire foam fill is added to the tires. • The rear axle is changed. • The sensor for the LSI is changed. The full test, which is stated in Operation and Maintenance Manual, "Maintenance Interval Schedule", must be followed.
Backup Alarm The backup alarm is located on the rear of the machine. The alarm sounds when the transmission direction and speed control lever is in the REVERSE position. The backup alarm is used to alert people behind the machine.
