TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
2. BAP FRONT PIN LOCK WILL NOT OPERATE.
INITIAL SETUP
Tools and Special Tools
Equipment Condition
Tool Kit, General Mechanic's: Automotive
Engine turned off (TM 9-2320-279-10)
(SC 5180-90-N26)
Parking brake applied (TM 9-2320-279-10)
Wheels chocked (TM 9-2320-279-10)
Materials/Parts
Load removed from the BAP (para 2-12)
Lockwasher (6) (Item 29, Appendix K)
HEMTT air supply fully charged (TM 9-2320-279-10)
Lockwasher (2) (Item 31, Appendix K)
BAP air supply hose connected to HEMTT supply
air coupling (para 2-15)
START
KNOWN INFO
1.
TEST OPTIONS
HEMTT air supply fully
Audible inspection.
Is there steady and
charged.
strong air pressure at
REASON FOR QUESTION
BAP air supply hose
end of BAP air supply
connected to HEMTT air
hose?
Front pin locks will not
supply coupling.
operate without sufficient
BAP control valve
air pressure.
activated.
POSSIBLE PROBLEMS
HEMTT air supply
pressure faulty.
HEMTT air supply is at
Air line between BAP air
fault; refer to TM 9-2320-
NO
supply hose and control
279-20. Verify repair; go
valve faulty.
to Step 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.
