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Maintenance Section
If the machine moved while testing the service brakes,
contact your Caterpillar dealer.
Have the dealer inspect, and if necessary repair the
service brakes before returning the machine to
operation. Failure to have the service brakes inspected
and repaired can cause injury or death.
Reference: See the appropriate Service Manual for
more information.
Parking Brake
Check the area around the machine. Make sure that the
area is clear of personnel and obstacles.
Check the brakes on a dry, level surface. Fasten the
seat belt before you check the brakes.
The following procedure is used in order to determine if
the parking brake is functional. This procedure is not
intended to measure the maximum brake
performance. The brake holding torque that is required
to sustain an engine torque at a specific engine rpm
varies depending on the machine configuration. The
variations are the differences in the engine setting, in
the power train efficiency, and in the brake holding
ability, etc.
Test Procedure
1. Start the engine.
2. Engage the parking brake.
3. If the machine is equipped with a standard
transmission, move the transmission control lever in
the following pattern:
• SECOND
•NEUTRAL
• SECOND
This is done in order to override the transmission
neutralizer for this test.
Note: The indicator light for the parking brake should
come on.
4. If the machine is equipped with a power shift
transmission, move the transmission control lever
in the following pattern:
• SECOND GEAR FORWARD
•NEUTRAL
• SECOND GEAR FORWARD
This is done in order to override the transmission
neutralizer for this test.
Note: The indicator light for the parking brake should
come on.
5. Gradually increase the engine speed to high idle.
The machine should not move.
If the machine begins to move, reduce the engine
speed immediately and apply the service brake
pedal.
6. Reduce the engine speed. Move the transmission
control lever to NEUTRAL.
If the machine moved during the test, perform the
maintenance procedure Operation and Maintenance
Manual, "Parking Brake - Adjust".
Cab Air Filter - Clean/Replace
There are two cab air filters.
Primary Cab Air Filter
Illustration 205 g01202853