
Chapter 5
Periodic inspections
5.16
PRONAR T185/1
5.13 MECHANICAL BRAKES INSPECTION
In a correctly adjusted brake, the stroke of
the brake cylinder piston should be within
the range given in the table (5.3) and de-
pends on the type of cylinder used. When
the wheel is fully braked, the optimum
angle between the expander lever and
the piston rod should be approx. 90°. With
this setting, the braking force is optimal.
Checking the brakes consists in measuring
this angle and the piston rod stroke in each
wheel.
SCOPE OF ACTIONS
• Measure distance X with the tractor
brake pedal released.
•
Measure the distance Y with the
tractor brake pedal pressed.
• Calculate the difference in distance
X-Y (piston rod stroke).
• Check the angle between the cylinder
piston axis and the expander lever.
• If the expander arm angle (2) and
piston rod stroke exceed the range
given in table (5.3), the brake should
be adjusted.
I.3.4.622.13.1.EN
ADVICE
Checking the technical condition of the brakes:
• according to the schedule of inspections,
• before the period of intensive use,
• after repairing the braking system.
• in the event of uneven braking of the trailer wheels.
X
Y
A
B
90
O
1
2
3
4
5
621-I.10-1
Figure 5.11
Brake check
(1) actuator piston rod (2) expander arm
(3) adjustment screw (4) cylinder fork
(5) pin position
(A) position of the arm in the released position
(B) position of the arm in braked position
Содержание T185/1
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