3-22
PARK BRAKE TEST AND ADJUSTMENT:
Check tightness of parking brake lever daily while operating it. Perform the following test
weekly and at the 50 hour maintenance interval:
1. Park the crane on level pavement.
2. While holding the foot brake pedal down, release the park brake lever and adjust the
knob on the end of the lever until the park brake feels tight when applied.
3. Fully apply the parking brake
4. Start the engine, retract the boom to the appropriate traveling position and raise the
outriggers.
5. Select fourth gear.
6. Push down hard on the foot brake pedal.
7. Select forward gear.
8. Move the park brake lever fractionally downward, just over center, slightly releasing
it. Hold park brake lever switch in the off position (located in the lever bracket).
9. Slowly release the foot brake pedal.
10. If the machine has not moved, use maximum engine speed. The machine should
not move.
11. Do not do this test for longer than 30 seconds.
12. Reduce engine speed to an idle.
13. Return the park brake lever to the fully on position from its partially applied position.
Place transmission in neutral.
14. If the machine moved during the test, set the crane on outriggers and adjust the
clearance between the park brake pad and brake disc, and repeat the test.
Maximum clearance is .010” (.25 mm) with park brake lever in the OFF position.
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