TM 5-4320-302-14Table 4-1. Organizational Preventive Maintenance Checks and ServicesW-WeeklyQ-QuarterlyM-MonthlyS-SemiannuallyINTERVALITEMNO.WMQSITEM TO BE INSPECTEDPROCEDURES4Fuel FeedPumpWARNINGSevere burns, illness, or death may result if per-sonnel fail to handle diesel fuel oil properly. Ob-serve the following precautions:·Do not inhale vapor.·Do not handle fuel near open flame, sparks, orexcessive heat.·Be certain fuel lines and connections aresecure.·Work in a well-ventilated area.Death or severe injury might result when com-pressed air is used to blow dirt from skin orclothing. Air entering body openings is extremelydangerous. Compressed air used for cleaning shallnot exceed 100 psi (690 kPa). Use goggles orface shield for eye protection. Do not direct air-stream against skin.Check fuel feed pump. Unthread screw from fuel feed pump.Remove, as an assembly, screw, washer, and cover. Separatescrew from washer. Remove gasket and strainer. Discardgasket and washer.Using diesel fuel oil and a soft-bristled brush, clean strainer,cover, and screw. If deposits in strainer cannot be removed,discard strainer. Dry with low pressure compressed air.Operate engine prime T-handle. Check proper operation offuel feed pump diaphragm. Check diaphragm for leaks.If diaphragm leaks, replace fuel feed pump by removing screwsand washers. Remove and discard O-seal. Install new O-seal.Install new fuel feed pump. Install screws and washers.Tighten screws securely.Install strainer onto fuel feed pump. Place gasket onto sealingsurface of pump. Install screw through washer and cover.4-16
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