TEST OPTIONS
KNOWN INFO
Visual Inspection
REASON FOR QUESTION
NO
YES
TM 9-2320-366-20-2
2-1976.34
Change 1
j4. NO AIR PRESSURE PRESENT AT REAR GLADHAND(S)
(ALL MODELS EXCEPT M1088) (CONT)
20.
Is air present at inversion
valve control port 90-degree
fitting supply port?
Vehicle park and service brakes
OK.
Air hoses free from kinks.
Emergency gladhand OK.
Air hose 155, 157, or 167
OK.
Service gladhand OK.
Air hose 149, 150, or 151
OK.
Air hose 102 OK.
Air hose 108 OK.
TRAILER AIR SUPPLY valve
OK.
Air hose 104 OK.
Air hose 241, 253, or 254
OK.
Air hose 230 or 256 OK.
Load sensing valve control port
tee fitting OK.
Air hose 240 or 243 OK.
Booster valve OK.
Service gladhand two-way
check valve OK.
Air hose 145 OK.
Air brake protecting valve OK.
Air hose 120 OK.
POSSIBLE PROBLEMS
Replace inversion valve
control port 90-degree fitting
(para 11-13).
Faulty inversion valve control
port 90-degree fitting.
Faulty air hose 128, 130, or
132.
If air is not present, air hose
(refer to Table 2-49.10.
Inversion Valve Control Port
Fitting Hose Numbers) is
faulty.
If air is present,
inversion valve control port
90-degree fitting is faulty.
Replace air hose (refer to
Table 2-49.10.
Inversion Valve
Control Port Fitting Hose
Numbers) (para 11-21).