Document 57.0005.8200 - 12/2005
Handler with telescopic boom
GTH-6622
Page
D-9
MAINTENANCE
D-3.5 BRAKES
•
For any intervention on the braking system
(adjustment and/or substitution of the brake discs)
call in a specialised technician.
The malfunctioning of the braking system may depend
on the presence of air within the hydraulic circuit.
The braking system has two bleeding valves: valve
for the service brake circuit and valve
for the negative
parking brake circuit.
To bleed the circuit of the service brake:
•
Make sure that the oil is level within the feeding tank
.
•
Step on the brake pedal repeatedly.
•
Slowly unscrew valve
and re-close it as soon as
oil mixed with air bubbles comes out.
•
Repeat the operation until bubble-free oil comes
out.
•
Bleed from both sides of the machine.
To bleed the circuit of the negative parking brake:
•
Press the parking brake button
. As soon as the
light indicator on the button goes off, start bleeding
through valve
until air-free oil comes out.
D-3.5.1 Checking the brake oil level
The oil within the braking circuit must be at about 2 cm
from the tank plug
.
Level
A
Содержание GTH-6622
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