TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
2. BAP FRONT PIN LOCK WILL NOT OPERATE (continued).
KNOWN INFO
2.
TEST OPTIONS
HEMTT air supply fully
Audible inspection.
Is there steady and
charged.
strong air pressure at
REASON FOR QUESTION
BAP air supply hose
inlet port of control
connected to HEMTT air
valve?
Control valve will not
supply coupling.
operate without
BAP control valve
sufficient air pressure.
activated.
HEMTT air supply
pressure OK.
POSSIBLE PROBLEMS
Replace air line between
BAP air supply hose and
Air line between BAP air
control valve (para 4-45).
NO
supply hose and control
Verify repair; go to Step
valve faulty.
7 of this fault.
Control valve faulty.
Curb-side and/or road-
side air lines between
control valve and air
YES
cylinders faulty.
Curb-side and/or road-
side air cylinder
breather(s) faulty.
Curb-side and/or road-
side air cylinder(s)
faulty.
4-34
