INSPECTING AND TROUBLESHOOTING BRAKE
Braking systems are usually inspected yearly, or
every 12,000 miles to ensure safe operation, to comply
with state and local regulations, and to keep personnel
and equipment safe. Many accidents caused by
defective brakes might have been avoided by frequent
and thorough brake inspections. These brake
inspections must be done more frequently when
vehicles are used in sand, mud, or constant fording.
Without a reliable braking system, CESE
does not leave the shop. If the problem is
discovered in the field, the next stop for that
equipment (towed) should be the CM
maintenance shop. CESE shall not be operated
nor will it be placed in operation with faulty
Regulations for testing and inspecting
about the same all over. One requirement
is that the
brakes must stop the vehicle within a prescribed
distance, at a given speed, with a minimum of effort, and
without deviating the vehicle from a straight line
The stopping distances for all vehicles depend on
the distance the driver can see and think before he or she
presses the brake pedal. Figure 6-1 shows some stopping
distances from different speeds with good brakes. These
stopping distances came from actual tests.
Hydraulic brakes should be inspected for the
external condition of the hoses and tubing, especially for
leakage or seepage at the couplings. Hose or tubing worn
or weakened by rubbing against other parts of the
vehicle must be replaced.
Under no circumstances should steel brake
tubing be replaced with copper tubing.
Test for leakage by holding the brake pedal
depressed for at least 1 minute. If the pedal does not
hold, there is a leak in the system. If you find a leak,
repair it, even if you have to pull all the wheels to
examine the wheel cylinders. Then fill the master
cylinder with fluid and bleed the brakes.
Figure 6-1.-Stopping distances from different speeds with