Brake System; Check Right And Left Brake Interlocking Performance; Check Brake Performance; Check Play In Brake Pedal Stroke - Hitachi ZW 550-6 Operator's Manual

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I. Brake System
Check Right and Left Brake Interlocking
Performance
--- every 10 hours (daily)
d
WARNING: Put up a do not enter sign for the range
of 100 m (110yd) ahead in the forward machine
travel direction. Arrange a safety monitor person.
d
WARNING: Do not allow dust and/or soil to
accumulate in vicinity (3) of the brake pedal. The
brake may lose traction.
While stepping on brake pedal (1), check the pedal
movement, the brake performance, and the play in the
pedal stroke for any problems.
If dust and/or soil accumulates in vicinity (3) of the brake
pedal, remove the accumulated dust and/or soil.

Check Brake Performance

1. Turn "OFF" the declutch switch.
2. Firmly step on the left hand brake pedal.
3. Release the parking brake.
4. Select the transmission shift lever 2nd and FORWARD.
5. Slowly accelerate the engine to full speed.
6. The machine should not move.
IMPORTANT: If machine moves when firmly step on
right hand brake with transmission in 2nd and
FORWARD, there is some problem with service
brake.
Do not operate until problem has been corrected.

Check Play in Brake Pedal Stroke

Measure the pedal stroke at pedal tip (2) by pressing the
pedal with your hand until you feel an intermittent feed
back from the pedal.
Correct Play (2): 4 to 13 mm (0.16 to 0.51 inch)
If the play is outside the specified range, consult your
nearest authorized dealer. In case poor performance is
noticed, consult your nearest authorized dealer. Get the
machine checked and repaired.
MAINTENANCE
2
3
7-88
115Z7B-1-81-1
1
1
115Z7B-7-86-2

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