Chapter 6
6.5
PRONAR T046H
Technical Support
6.4 BRAKE ADJUSTMENT
During trailer operation, drum brake friction
linings are subject to wear. The stroke of
the brake lever and piston increases and
the braking force decreases. Adjustment
must be carried out when:
• the cylinder piston stroke is 2/3 of the
maximum stroke,
• the expander levers are not parallel
to each other during braking,
• the braking system was repaired.
Trailer wheels must brake simultaneously.
The brakes are adjusted by changing the
position of the expander arm (3) - figure
(6.4), relative to the expander shaft.
The scope of service activities:
• Secure the trailer with additional
wedges.
• Release the trailer parking brake.
• Remove the actuator fork pin
•
On the cylinder piston rod (1) - figure
(6.4) mark with a line the position of
the maximum retraction of the piston
rod (A).
• Press the brake pedal on the tractor,
614-J.05-1
A
o
90
25-45 mm
1
5
6
D
C
B
7
A
C
D
3
3
4
4
2
5 8
Figure 6.4
Brake adjustment
(1) piston rod (2) diaphragm (3) expander lever (4) adjusting screw
(5) cylinder fork (6) pin position (7) cylinder bracket
(A) mark on piston rod in unbraked position (B) mark on piston rod in braked position
(C) position of the arm in the unbraked position (D) position of the arm in the fully braked position
Summary of Contents for T046H
Page 2: ......
Page 3: ...INTRODUCTION ...
Page 10: ...Chapter 1 General information 8 PRONAR T046H ...
Page 11: ......
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Page 15: ......
Page 16: ......
Page 17: ...GENERAL INFORMATION CHAPTER 1 ...
Page 31: ...SAFETY OF USE CHAPTER 2 ...
Page 46: ...Chapter 2 Safety of use 2 16 PRONAR T046H ...
Page 47: ...CONSTRUCTION AND OPERATION CHAPTER 3 ...
Page 57: ...TERMS OF USE CHAPTER 4 ...
Page 71: ...PERIODIC INSPECTIONS CHAPTER 5 ...
Page 99: ...TECHNICAL SUPPORT CHAPTER 6 ...
Page 112: ...Chapter 6 Technical Support 6 14 PRONAR T046H ...
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Page 116: ...APPENDIX A A 2 PRONAR T046H ...