BRAKES
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
97
prying back the adjuster arm and turning the star wheel.
Permanent damage to adjuster will result.
Adjustment takes place only when the brake is fully
applied and released while the vehicle is moving (Fig-
ure 2). It is very important that the brake cables permit the
brake levers to release fully when the brake pedal is in
the released position.
How the Parking Brake Works
The parking brake is operated by a smaller pedal which
extends across the top of the service brake pedal. It is
attached to the service brake pedal with a hinge pin and
is spring loaded.
Pressing the parking brake pedal moves the latch arm
against the catch bracket. As the parking brake is
pressed, the service brake is applied until the notch in the
latch arm engages with the catch bracket. The service
brake pedal is held in the applied (down) position by the
catch bracket. The latch arm is held in position by the ten-
sion in the brake linkage. The parking brake can be
released by two methods:
1. Pressing the service brake, which permits the spring
loaded parking brake pedal to return to its original
position, disengaging the latch arm from the catch
bracket. This is the preferred method which mini-
mizes wear on components.
2. Pressing the accelerator pedal rotates the kick-off
cam which forces the pedal latch arm to move away
from the catch bracket. The spring loaded parking
brake pedal returns to its original position, releasing
the brake.
Kick-Off Actuating Linkage
The kick-off actuating linkage may require periodic adjust-
ment to compensate for the normal wear. Replacement of
any linkage components will also require an adjustment.
FAULT TESTING AND INSPECTION
New Vehicles
A new vehicle will experience an initial break-in of compo-
nents which includes the brake cables and brake shoes.
In this break-in period, it is common for the brake pedal
free travel to change (and the force needed to engage the
parking brake). This timing changes with terrain and the
drive habits of the operators. When this occurs, the brake
linkage must be adjusted. See Adjusting Brake Pedal
Free Travel. After the initial break-in period, no further
adjustments should be necessary until routine mainte-
nance is scheduled.
Fault Testing and Inspection Procedures
To find the problem in the mechanical brake system,
inspect the brake pedal and linkage to find worn or dam-
aged parts per the Fault Diagnosis Table. Then, do the
Periodic Brake Performance Test to evaluate the brake
system performance. Based on the results of the inspec-
tion and tests, refer to the Fault Diagnosis section to eval-
uate symptoms and repairs. If necessary, disassemble
the wheel brake to find and correct internal faults.
For removal or replacement of parts and adjustments
referred to in this section of the manual are described in
detail under MAINTENANCE AND REPAIRS.
Satisfactory brake performance does not decrease
the need for routine brake tests and inspection as
shown on the Periodic Service Schedule. Correct
brake operation depends on periodic maintenance.
Brake Pedal and Linkage Inspection
1. Inspect brake pedal return bumper.
Be sure that the brake pedal is contacting the pedal
return bumper when released, that the bumper is in
good condition (Figure 3).
Figure 3 Brake Pedal Inspection
2. Check brake pedal return.
Apply the brake pedal and release. Check that the
brake pedal arm rests against the pedal bumper
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