TM 9-2320-365-20-2
2-1630
YES
Visual inspection
KNOWN INFO
NO
TEST OPTIONS
REASON FOR QUESTION
A blocked or leaking
delivery air hose to load
sensing valve will prevent
air delivery to service brake
chambers and cause rear
brakes not to apply.
Is delivery air hose to load
sensing valve free
from blockage, leaks or
damage?
6.
Front brakes OK.
Air tanks pressurized.
Supply air hose to foot
control valve OK.
Foot control valve OK.
Air hoses at cab floor OK.
Air hose to check valve OK.
Check valve OK.
POSSIBLE PROBLEMS
Faulty air hose to load
sensing valve.
Faulty load sensing
valve.
Faulty air hose to control
port of relay valve.
Faulty air hose to supply
port of relay valve.
Faulty relay valve.
Faulty air hoses to spring
brakes.
Faulty vent hose from
spring brake service
chamber.
Faulty spring brake
chamber.
Replace damaged air hose
(para 11-19).
i2. REAR BRAKES DO NOT APPLY (CONT)