Table 2-1. Unit Level Preventive Maintenance Checks and Services HMMWV (Cont'd)
ITEM TO BE
a. Check DC outlets for proper oper-
a. No DC voltage at
tion. Using multimeter, check for volt-
outlet, or not within
age at DC receptacles. If engine is run-
ning, voltage should be 27-28 volts. If
M997A1, and engine is not running, voltage should
be 24.2-25.2 volts. Reefer to para. 2-39,
electrical troubleshooting, if voltage
is not within the specified range.
b. Inspect and tighten two mounting
b. Body not securely
capscrews securing ambulance body to
mounted to floor.
cargo floor to 90 lb-ft (122 Nm).
Tighten seven capscrews securing
ambulance body to D beam to
90 lb-ft (122 Nm).
c. (M997, M997A1, and M997A2 only)
c. Any class III leak.
Inspect compressor for security of
mounting and oil leakage.
a. Inspect vent tubes for bends,
cracks, breaks, deterioration, and
b. Inspect vent tube mounting hard-
ware for proper installation.
c. Inspect intake and exhaust exten-
c. Any exhaust extension
sions for proper installation and leaks.
NOT FULLY MISSION