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Brake Maintenance
Adjusting the Service Brakes
Adjust the service brakes when there is more than 25 mm (1
inch) of free travel of the brake pedal, or when the brakes
do not work effectively. Free travel is the distance the brake
pedal moves before you feel braking resistance.
Note: Use the wheel motor backlash to rock the drums
back and forth to ensure that the drums are free prior to and
after adjustment.
1. To reduce free travel of the brake pedals, tighten the
brakes by loosening the front nut on the threaded end
of the brake cable
(Figure
1
Figure 41
1. Brake cables
2. Tighten the rear nut to move the cable backward until
brake pedals have 1.27 to 1.9 cm (1/2 to 3/4 inch) of
free travel, before wheel lock up is achieved.
3. Tighten the front nuts, ensuring that both cables
actuate the brakes simultaneously.
Adjusting the Parking Brake
If the parking brake fails to engage, an adjustment to the
brake pawl is required.
1. Loosen the 2 screws securing the parking-brake pawl
to the frame
(Figure
41).
2
2. Front nuts
42).
1
1. Brake cables
2. Screws (2)
2. Press the parking brake pedal forward until the brake
detent completely engages on the brake pawl
42).
3. Tighten the 2 screws locking the adjustment.
4. Press the brake pedal to release the parking brake.
5. Check the adjustment and readjust as required.
41
3
4
Figure 42
3. Parking-brake pawl
4. Brake detent
2
(Figure
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