TM 9-6115-658-13&P 2-18 Table 2-2.  Operator Preventive Maintenance Checks and Services – (continued) ITEM NO. INTERVAL LOCATION PROCEDURE NOT FULLY MISSION CAPABLE IF: ITEM TO CHECK/SERVICE 21 During GENERATOR SET ASSEMBLY HOUSING a. Check door, panel, hinges, and clamping catches for damaged, loose, or corroded items. b. Inspect exhaust grills and air intake grills for debris. Cannot secure   door With any access door open, the noise level of this generator set when operating could cause hearing damage.  Hearing protection must be worn when working near the generator set while running. The fuels used in this generator set are highly explosive.  Do not smoke or use open flame when performing maintenance.  Flames and explosion can occur resulting in severe personal injury or death. Exercise extreme caution when performing "During" checks inside engine compartment. Avoid contact with moving or hot engine parts.  Failure to observe this warning can result in severe personal injury or death. 22 During ENGINE   ASSEMBLY Check for loose, damaged, or missing parts. 23 During FUEL SYSTEM Inspect for leaks, damaged, loose, or   missing parts. Any fuel leaks, damaged or loose parts. 24 During LUBRICATION SYSTEM Inspect for leaks, damaged, loose, or missing parts. Class III leaks,   and damaged, or loose parts. 25 During COOLING FAN Listen for unusual noise in fan area.        High voltage is produced when this generator set is in operation.  Improper                     operation could result in severe personal injury or death. WARNING WARNING WARNING WARNING