This inspection :
. Applies to all vehicles with a secondary brake operaring mechanism
in addition to, or in place of, the normal parking brake lever
. Includes hand operated valves fitted to control spring brakes
or lock actuators
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1. Examine the control
for
a. fractures, damage or excessive corrosion
b. security of operating valve spindle
c. amount of travel
d. loose connections or leaks
e. wear in gate and/or lever locating mechanism
f. damping of the lever gate on valves controlling lock actuators.
2. Check the valve unit for
a. security of its mounting
b. location
c. correct functioning.
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1.
a. Deliberate modification which significantly reduces the original
strength, excessive corrosion, damage, fracture or an inadequate
repair of the control
b. an insecure operating valve spindle
c. the control cannot be moved over its full travel
d. a loose connection or a leak in the system
e. a gate and/or locating mechanism so worn that the lever is not
safely retained In the "on" or "off" position
f. insufficient or no damping of the lever gate on valves controlling
lock actuators.
2.
a. An insecure valve unit
b. the lever located so that it cannot be operated satisfactorily
from the normal driving position
c. a valve malfunctioning.
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