Change Of Parking Brake Cable And Adjustment Of - PRONAR T669 Operator's Manual

SECTION 5
brake shoes in drum and result in overheating the brakes. Expander arms must be positioned
in parallel with regard to each other at full braking. If this is not so, adjust the position of the
lever, which has the longer stroke.
If it is necessary to dismantle the cylinder fork (4), remember or mark its original position in
the expander arm. The mounting position is selected by the Manufacturer and may not be
changed.
TAB. 5.2 Position of fork pin in expander arm
TYPE OF BRAKE SYSTEM
Single conduit pneumatic system
Double conduit pneumatic system
Hydraulic brake system
5.2.9 CHANGE OF PARKING BRAKE CABLE AND ADJUSTMENT OF CABLE
TENSION.
Proper operation of the parking brake is dependent on the effectiveness of the front axle
brake and the correct brake cable tension.
Replacing the parking brake cable
Hitch trailer to tractor. Park trailer and tractor on level surface.
Place securing chocks under one trailer wheel.
Fully unscrew the bolt of the brake crank mechanism (1).
Loosen the nuts(7) of U-shaped clamps (5).
Remove the pins of the lever (4) and crank mechanism (1), remove the
shackles (6).
Dismantle handbrake cables (2) and (3).
Clean parking brake components, lubricate parking brake crank mechanism
and pins of cable guide rollers.
Install new cables (2) and (3).
Parking brake cables must be fitted carefully.
PIN POSITION [mm]
FRONT AXLE
150
150
180
5.13
Pronar T669
REAR AXLE
210
210
180