TH350B, TH355B, TH360B and TH460B Telehandlers Longitudinal Stability Indicator - Test Caterpillar


Longitudinal Stability Indicator - Test
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1.1. Initial Test
2.1. Second Test

The following procedure must be followed when you test the operation of the longitudinal stability indicator system.

Initial Test

  1. Perform the following procedures to the machine:

    1. Remove any work tool from the machine. Remove any load that is applied to the rear hitch.

    2. Position the machine on level ground. If necessary, level the frame of the machine.

    3. If the machine is equipped with stabilizers, ensure that the stabilizers are raised fully.

    4. Ensure that all the wheels are facing straight ahead. Drive the machine forward and drive the machine in reverse for 3 m (10 ft).

    5. Tilt the coupler fully forward.

    6. Fully lower and retract the boom.

    7. Engage the parking brake and move the transmission control to the NEUTRAL position.

  2. Turn the ignition to the OFF position. Wait for 30 seconds.

  3. Turn the ignition to the ON position, but do not crank the engine.

    Note: The machine will perform the self test. Refer to “Engine Start Switch” topic in Operation and Maintenance Manual, "Operator Controls" for more information.

  4. After the self tests are completed, the machine will test the longitudinal stability indicator system.

    1. If the test is successful, the gauge will function in the manner that was described in Operation and Maintenance Manual, "Monitoring System". This indicates that the system is operating correctly.

    2. The needle of the longitudinal stability indicator will move into the red zone of the gauge if the test is failed. An intermittent audible alarm will sound. The warning light will be activated. Turn the ignition to the OFF position in order to stop the alarm.

      Note: This test is performed automatically. The test will be conducted when the ignition is switched from the OFF position to the ON position.

Second Test

Perform the following test if the machine fails the system test of the longitudinal stability indicator.

  1. Completely perform Step 1 of "Initial Test".

  2. Repeat the test of the longitudinal stability indicator system .

    Note: If the machine continues to fail system tests of the longitudinal stability indicator, the machine must not be operated. Call your AVSpare dealer for recalibration of the longitudinal stability indicator system.

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