Testing Parking Brake Performance - Komatsu WA250-6 Shop Manual

SEN03837-01
Testing parking brake
performance
a Measurement condition
Tire inflation pressure: Specified pressure
q
Road: 1/5 gradient (11° 20'), flat, and dry road
q
Machine: Ready for operation
q
Measuring method
1. Start the engine and set the machine in the
straight travel position, and then drive up a
slope of 1/5 gradient with no load in the bucket.
2. Press the brake pedal to stop the machine, set
the directional lever in the N position, and stop
the engine.
3. Pull the parking brake lever fully, release the
brake pedal gradually, and check that the
machine is kept stopped.
a Measure the parking brake performance
on an uphill and a downhill.
28
30-120
1
120 Testing and adjusting, Part 2

Testing parking brake performance

WA250, 250PZ-6