Chapter 5
5.15
PRONAR T672ECO
Periodic inspections of the trailer
5.12 CHECKING OF MECHANICAL BRAKES
In a correctly adjusted brake the cylinder
piston stroke brake should be within the
range given in Table 5.3 and depends on
the type of cylinder used. When the wheel
is fully braked, the optimal 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.
THE SCOPE OF ACTIVITIES
• Measure the distance X with the
tractor brake pedal released.
• Measure the distance Y with the
tractor brake pedal pressed.
• Calculate the distance difference X-Y
(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 5.10
Brake check
(1) cylinder piston (2) expander arm
(3) adjustment screw (4) of the cylinder fork
(5) pin position
(A) position of the arm in the released position
(B) arm position in braking position
Summary of Contents for T672ECO
Page 3: ...INTRODUCTION ...
Page 10: ...Introduction 8 PRONAR T672ECO ...
Page 11: ......
Page 12: ......
Page 15: ......
Page 16: ......
Page 17: ...GENERAL CHAPTER 1 ...
Page 32: ...SAFETY OF USE CHAPTER 2 ...
Page 51: ...Chapter 2 Safety of use 2 20 PRONAR T672ECO ...
Page 52: ...CONSTRUCTION AND PRINCIPLE OF OPERATION CHAPTER 3 ...
Page 71: ...RULES OF USE CHAPTER 4 ...
Page 101: ...PERIODIC INSPECTIONS OF THE TRAILER CHAPTER 5 ...
Page 131: ...TECHNICAL SUPPORT CHAPTER 6 ...
Page 147: ......
Page 148: ......
Page 150: ...APPENDIX A A 2 PRONAR T672ECO ...