ARMY TM 9-6115-604-12NAVY NAVFAC P-8-633-12Figure 3-19. Air Cleaner Assemblyc.AirRestrictionIndicators.Indicator assemblies (4, Figure 3-20) are resettable Items and need not be replacedexcept for obvious physical damage or the Inability to reset to green. The green, amber, and red color coding of the airrestriction Indicators Is Intended to Indicate the degree to which the air cleaners have become contaminated during thefiltration process. Green indicates an acceptable level of contamination. Amber or red Indicates an unacceptable levelof contamination. Refer to the next higher level of maintenance for maintenance of the air cleaners when the amberportion of the indicator sleeve is visible through the sight window of the air restriction indicator.d.AirControlValve.(1) Inspect. Visually Inspect each air control valve (Figure 3-21) for secure mounting, damage, or rust.CAUTIONDo not perform this test on a hot engine. if engine has been running atoperational temperature, allow generator set to run at no load for at least 5minutes before performing the test. This will allow the engine time to cool andwill prolong engine life.(2) Test. While engine is operating, depress EMERGENCY SHUTDOWN pushbutton S7 to trip shut downvalves. Air valves must shut down engine. Manually reset valves to open position after test.e.MaintenanceofRockerHousingCovers.(1) Inspect.(a) Visually inspect rocker housing covers (1, Figure 3-22) for evidence of cracks.(b) Inspect area of rocker housing cover gasket (2) for leaks. Replace leaking gasket In accordance withstep.(2) below.(c) Check capscrews (3 and 4) for damage and proper torque, 30 to 35 pound-feet (41 to 47 newton-meters).Replace damaged capscrews.3-56
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