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Page Title:
M1088 TRAILER HANDBRAKE DOES NOT OPERATE (cont) |
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 TM 9-2320-366-20-2
j4D. M1088 TRAILER HANDBRAKE DOES NOT OPERATE (CONT)
KNOWN INFO
TEST OPTIONS
4.
Visual inspection
Air present at rear and fifth
REASON FOR QUESTION
wheel gladhands when service
Is air present at
brakes applied.
trailer service brake
If air is present, trailer service
Air hoses free from kinks.
valve supply port?
brake valve is faulty.
Air brake protecting valve OK.
Air hose 162 OK.
Air hose 129 OK.
POSSIBLE PROBLEMS
NO
Faulty trailer service brake
valve.
Faulty park control two-way
check valve.
Faulty air hose 161.
Go to step 5
YES
of this fault.
Replace trailer service
brake valve (para 11-32).
KNOWN INFO
TEST OPTIONS
5.
Visual inspection
Air present at rear and fifth
REASON FOR QUESTION
wheel gladhands when service
Is air present at park
brakes applied.
control two-way check
If air is not present, park
Air hoses free from kinks.
valve delivery port?
control two-way check valve
Air brake protecting valve OK.
is faulty. If air is present, air
Air hose 162 OK.
hose 161 is faulty.
Air hose 129 OK.
Trailer service brake valve OK.
POSSIBLE PROBLEMS
NO
Faulty park control two-way
check valve.
Faulty air hose 161.
Replace park control
YES
two-way check valve
(para 11-19).
Replace air hose
161 (para 11-21).
Change 1
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