TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
2. BAP FRONT PIN LOCK WILL NOT OPERATE (continued).
5.
TEST OPTIONS
KNOWN INFO
Manually extend and
HEMTT air supply fully
Do curb-side and road-
contract curb-side and
charged.
side air cylinders
road-side air cylinders
BAP air supply hose
manually extend and
without breather
connected to HEMTT air
contract without breather
installed.
supply coupling.
installed?
BAP control valve
REASON FOR QUESTION
activated.
HEMTT air supply
Front pin locks will not
pressure OK.
release if breather is
Air line between BAP air
plugged or damaged.
supply hose and control
valve OK.
Replace curb-side
Control valve OK.
and/or road-side
Air lines between control
NO
breather (para 4-35).
valve and air cylinders
Verify repair; go to
OK.
Step 7 of this fault.
POSSIBLE PROBLEMS
Curb-side and/or road-
YES
side air cylinder
breather(s) faulty.
Curb-side and/or road-
side air cylinder(s)
faulty.
4-40
