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Maintenance Section
Longitudinal Stability Indicator
- Calibrate
The use of a defective longitudinal stability indicator
(LSI) could lead to the instability of the machine. Do
not operate the machine if the LSI is not fully
serviceable. The instability of the machine could
cause personal injury or death.
Refer to the appropriate Service Manual for information
on this procedure.
Longitudinal Stability Indicator
-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:
a. Remove any work tool from the machine.
Remove any load that is applied to the rear
hitch.
b. Position the machine on level ground. If
necessary, level the frame of the machine.
c. If the machine is equipped with stabilizers,
ensure that the stabilizers are raised fully.
d. Ensure that all the wheels are facing straight
ahead. Drive the machine forward and drive
the machine in reverse for 3 m (10 ft).
e. Tilt the coupler fully forward.
f. Fully lower and retract the boom.
g. 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.
a. 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.
b. 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 Caterpillar dealer for
recalibration of the longitudinal stability indicator
system.
Oil Filter - Inspect
Inspect a Used Filter for Debris
Illustration 272 g00100013
The element is shown with debris.
Use a filter cutter to cut the filter element open.
Spread apart the pleats and inspect the element for
metal and for other debris. An excessive amount of
debris in the filter element can indicate a possible
failure.