PRONAR T743, Operator'S Manual

Page: 106 / 150

SECTION 5 Pronar T743
5.7
5.2.2
OPERATION NO. 2 - ADJUSTMENT OF MAIN BRAKE
Brakes adjustment is necessary when:
•
as a result of wear of brake shoe linings between lining and drum there is
excessive slack and reduced braking effectiveness.
•
wheel brakes do not brake evenly or simultaneously.
•
repairs are made to braking system
If brakes are correctly adjusted, braking of trailer wheels takes place simultaneously. Brakes
adjustment involves changing setting of axle shaft expander arm (2) in relation to expander
shaft (1). To do this regulate the shaft position (2) with the aid of retaining bolt (3) in
appropriate direction:
•
in direction A, if braking is too early,
•
in direction B, if breaking is too late.
FIGURE 5.2 Adjustment of main brakes
(1) expander shaft, (2) expander arm, (3) adjustment bolt
Adjustment should be conducted separately for each wheel. After proper brake adjustment,
at full braking the axle shaft expander arm should create an angle of 90
°
with ram piston. Axle