
97
Maintenance Section
Bucket Cutting Edges - Inspect/Replace
The following tests are used to determine whether
the braking system is functional. These tests are
not intended to measure the maximum brake
holding effort. The required brake holding effort
for sustaining a machine at a specific engine rpm
varies from one machine to another machine. The
variations include differences in the engine setting,
the power train efficiency, the brake holding ability,
etc.
Service Brake Holding Ability Test
Personal injury can result if the machine moves
while testing.
If the machine begins to move during test, reduce
the engine speed immediately and engage the
parking brake.
1. Start the engine. Raise the implement slightly.
Apply the service brake. Release the parking
brake.
2. Move the transmission control to SECOND
SPEED REVERSE while the service brakes are
applied. Make sure that the autoshift control is in
the OFF position.
3. Gradually increase the engine speed to high
idle. The machine should not move.
4. Reduce the engine speed to low idle. Move the
transmission direction control to the NEUTRAL
position. Engage the parking brake. Lower the
implement to the ground. Stop the engine.
If the machine moved during the test, consult your
Caterpillar dealer for a brake inspection. Make any
necessary repairs before the machine is returned
to operation.
Parking Brake Holding Ability Test
Personal injury can result if the machine moves
while testing.
If the machine begins to move, reduce the engine
speed immediately and apply the service brake
pedal.
This test is performed when the parking brake is
engaged. If the machine begins to move, compare
the engine rpm to the engine rpm of a prior test.
This will indicate the amount of system deterioration.
1. Start the engine. Raise the implement slightly.
Engage the parking brake.
2. Move the transmission control to THIRD SPEED
REVERSE. Make sure that the autoshift control
is in the OFF position.
The parking brake indicator light should come
on.
3. Gradually increase the engine speed to high
idle. The machine should not move.
4. Reduce the engine speed to low idle. Move the
transmission direction control to the NEUTRAL
position. Lower the implement to the ground.
Stop the engine.
If the machine moved during the test, consult your
Caterpillar dealer for a brake inspection. Make any
necessary repairs before the machine is returned
to operation.
i01697186
Bucket Cutting Edges -
Inspect/Replace
SMCS Code: 6801-040; 6801-510
Personal injury or death can result from bucket
falling.
Block the bucket before changing bucket cutting
edges.
g00764365
Illustration 142
Check the cutting edges and the end bits for wear
and for damage. Use the following procedure
to service the cutting edges and the end bits, if
necessary.