M977 Through M985 General Operating Procedures (Cont)
2-11. DRIVE VEHICLE (CONT).
Check that FUEL gage (10) shows enough fuel to complete mission.
WATER TEMP gage may not show reading at engine
Check that WATER TEMP gage (11) does not read over 230_F
Check that BATTERY gage (12) reads between 24 and 28 volts.
Check that AMPERES gage (13) shows positive reading.
Check that air filter restriction indicator (14) shows yellow.
If air filter restriction indicator (14) shows red, press button (15). If
indicator still shows red and/or VACUUM INCHES H
shows 18, stop engine and clean air filter elements (para 3-8).