TM 9-2320-279-10-1
2-160
Change 8
M977 Through M985 General Operating Procedures (Cont)
2-11. DRIVE VEHICLE (CONT).
(5)
Check that AIR PRESS gage (5) reads 60 to 120 psi (414 to 827 kPa).
Air pressure indicator (6 or 6.1) will light and buzzer will sound until
both needles reach 60 to 75 psi (414 to 517 kPa).
(6)
Check that FUEL gage (7) shows enough fuel to complete mission.
NOTE
WATER TEMP gage may not show reading at engine idle.
(7)
Check that WATER TEMP gage (8) does not read over 230F (110 C).
(8)
Check that BATTERY gage (9) reads between 24 and 28 volts.
(9)
Check that AMPERES gage (10) shows positive reading.
(10)
Check that air filter restriction indicator (11) shows yellow.
(11)
If air filter restriction indicator (11) shows red, press button (12). If
indicator still shows red and/or VACUUM INCHES H
2
O window
shows 18, stop engine and clean air filter elements (para 3-8).
