4-39
GROUP 3 TESTS AND ADJUSTMENTS
GROUP 3 TESTS AND ADJUSTMENTS
1. PARKING BRAKE PERFORMANCE
1. PARKING BRAKE PERFORMANCE
MEASUREMENT CONDITION
EASUREMENT CONDITION
Tire inflation pressure : Specified pressure
Road surface : Flat, dry, paved surface
with 1/5 (11˚
20'
) gradient.
Machine : In operating condition
1)
1)
20%
gradient
11 20'
20%
gradient
11 20'
(1)
(2)
(3)
MEASURING PROCEDURE
MEASURING PROCEDURE
Start the engine and drive the machine
straight up a 1/5 gradient with the bucket
unloaded.
Depress the service brake, place the gear
selector lever in neutral, then stop the
engine.
Turn the parking brake switch ON, then
slowly release the service brake pedal
and the machine must be kept stopped.
The measurement must be made with
the machine facing either up or down
the slope.
(1)
(2)
(3)
※
2)
2)
2.
2. ADJUSTMENT OF PARKING BRAKE
ADJUSTMENT OF PARKING BRAKE
External brake inspection
·
Inspect for wear of brake pad
Refer to the PARKING BRAKE SYSTEM
on the page 4-22.
Setting screw
Lock nut
760F4BS17
760F4BS18
7609A4BS27
Item
Standard valve
Parking brake
performance
Keep machine on 20%
(11
˚
20') gradient
(1)
(2)
Summary of Contents for HL955
Page 557: ...7 6 MEMORANDUM MEMORANDUM ...