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Handbrake
A correctly adjusted handbrake should raise 1/3 to ½ of the allowable range at the handbrake handle. Poorly
adjusted handbrakes are dangerous. Under adjusted they may allow the trailer to roll and over adjusted can cause
brake linings to drag and overheat the brakes while driving.
Parking brakes are mechanically operated by cable means. The cable aachment occurs outside of the brake
backing plate. Cable force applied to the parking lever creates a torque through the pivot pin and cam assembly.
Torque transferred to the parking cam results in a spreading force between the primary and secondary shoes. The
shoes in turn, move towards the drum unl contact is made. Fricon generated between the drum and lining
contact surface results in parking brake capability.
Use the cable adjuster to give enough tension to be able to set the handbrake lever on the last two notches of the
coupling or handbrake is 1/3 raised when unladen. This needs to be checked again when the trailer or caravan is
loaded. If the cable is too ght, the brakes will be applied as the axle moves backward under spring deflecon.
Adjuster
Pre 0707 Mode⑲s
To adjust the handbrake cable tension release locknuts A, B and C in the diagram Handbrake Adjuster 1 below. To
ghten the handbrake cable, turn the adjuster wheel D in a clockwise direcon. Once adjusted reghten lock nuts
and test. Always ensure that wheels turn freely when handbrake is off. Overghtened cables can cause brakes to
drag and damage the brake linings.
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