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4-5
PARKING BRAKE
Operating force of parking lever is 20 - 30
kgf
Â
m
(144 - 217
lbf
Â
ft
).
Check that parking brake can hold
machine in position when loaded on 15%
slope. If there is no slope available, travel
at low speed and check braking effect of
parking brake.
B
B
RAKE PIPING
Check pipes, hoses and joints for damage, oil leakage or interference.
Operate brake pedal and check operating force when pedal in depressed. Check also change in
operating force, and change in position of pedal when pedal is kept depressed.
WHEEL BRAKE
Compact wheel base chassis
Measure lining at point with most wear, and check that lining thickness is at least 2.0mm(0.08in).
Hold lining surface with screw driver to prevent piston from coming out, depress brake pedal and
check movement of shoe.
Remove brake shoe from anchor pin, and check for rust or wear.
When assembling, coat sliding parts with special brake grease.
BRAKE DRUM
Measure inside diameter of drum, and check that it is within 254mm(10in).
Tighten mounting bolt of drum.
BACKING PLATE
Check visually for deformation or cracks.
Check particularly for deformation at outside circumference of plate and at mounting bolt.
Coat mounting bolt with loctite and tighten.
BRAKING FORCE
Select a dry, flat, paved surface and drive truck at maximum speed. When signal is given, stop
truck immediately and measure distance from point where signal was given to point where truck
stopped. (unloaded)
Â
Stopping distance : Within 5m(197in)
Check that there is no pulling of steering wheel, pulling by brakes to one side or abnormal noise
when making emergency stops.
GROUP 2 OPERATIONAL CHECKS AND TROUBLESHOOTING
1. OPERATIONAL CHECKS
1)
(1)
(2)
2)
(1)
(2)
(3)
3)
(1)
(2)
4)
(1)
(2)
5)
(1)
(2)
6)
(1)
(2)
Release
Lock
B207BS19