TM 5-3805-263-14&P-3
Brakes
To Test Service Brakes:
1. Drain moisture and sediment from air reservoir.
3. To check the air system, stop the engine, depress
When testing service brakes, fasten
the brake pedal and observe the air pressure gauges for
seat belt, and be ready for the sudden
loss of system pressure.
stop.
4. Start the engine, release the brake pedal and
Test stopping ability of service brakes whenever a
operate the grader in 3rd gear forward at maximum
deficiency is suspected.
engine speed on hard packed dirt.
2. Start the engine and wait until maximum air pressure
5. Apply the service brake. If the engine stalls, the
is obtained.
service brakes are satisfactory.
6. If the wheels did not skid (slide), consult your
Caterpillar dealer for service and inspection of the
service brakes.
Parking Brake
When testing parking brake, fasten seat belt, and be ready for the sudden stop.
To Test Parking Brake:
1. Drain moisture and sediment from air reservoir.
2. Start the engine and wait until maximum air pressure
is obtained.
3. Operate the machine in 2nd gear forward at
maximum engine speed and on hard packed dirt.
4. Depress the transmission modulator pedal, shift
transmission to neutral and apply the parking brake.
5. The parking brake is satisfactory if wheels skid
Test the holding ability of the parking brake whenever a
(slide).
deficiency is suspected.
6. If the wheels did not skid (slide), consult your
CAUTION
Caterpillar dealer for service and inspection of the
Do not perform the parking brake test
parking brake.
repeatedly. Damage to the brake disc
can result.
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