TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
2. BAP FRONT PIN LOCK WILL NOT OPERATE (continued).
TEST OPTIONS
3.
KNOWN INFO
Audible inspection.
HEMTT air supply fully
Is there steady and
charged.
strong air pressure at
REASON FOR QUESTION
BAP air supply hose
right and left outlet
connected to HEMTT air
ports of control valve?
Air cylinders will not
supply coupling.
operate without sufficient
BAP control valve
air pressure output from
activated.
control valve.
HEMTT air supply
pressure OK.
Air line between BAP air
supply hose and control
Replace control valve
valve OK.
(para 4-44). Verify
POSSIBLE PROBLEMS
NO
repair; go to Step 7
of this fault.
Control valve faulty.
Curb-side and/or road-
side air lines between
control valve and air
cylinders faulty.
Curb-side and/or road-
side air cylinder
YES
breather(s) faulty.
Curb-side and/or road-
side air cylinder(s)
faulty.
4-36
