CHAPTER 3 OPERATOR/CREW MAINTENANCE INSTRUCTIONS

TM 5-6115-590-12 CHAPTER 3 OPERATOR/CREW MAINTENANCE INSTRUCTIONS Section I. Lubrication Instructions 3-1. General Lubrication of the power plant is accomplished by organizational personnel; however, the operator should insure that the oil level in the oil tank is adequate before operation of the power plant. Section II. Preventive Maintenance Checks and Service 3-2. General To insure that the power plant is ready for operation at all times, it must be inspected systematically so that defects may be discovered and corrected before they result in serious damage or failure. The necessary preventive maintenance checks and services are described in paragraph 3-3 and table 3-1. The item numbers indicate the sequence of minimum inspection requirements. Defects discovered during operation of the power unit shall be noted for correction as soon as operation has stopped. Stop operation immediately if a deficiency is noted during operation which would damage the equipment if operation were continued. All deficiencies and short-comings shall be recorded together with the corrective action taken on from DA 2404 (Equipment Inspection and Maintenance Worksheet) at the earliest opportunity. 3-3. Preventive Maintenance Checks and Services Preventive maintenance checks and services to be performed by the operator/crew are listed in table 3-1. 3-4. Dual Water Hose Assembly Inspection. Inspect dual water hose assembly (fig. 1-15, sheet 3 of 7) for damage, signs of leakage, stripped or crossed threads on coupling nuts and electrical connectors, missing or damaged protective caps. 3-5. Supply and Drain Water Hose Assembly Inspection. Inspect supply and drain water hose assembly for damage, signs of leakage, stripped or crossed threads on coupling nut and electrical connector, missing or damaged protective caps or lugs. 3-6. External Fuel Filter. The external fuel filter is a vertical, portable filter/separator consisting of an aluminum tank mounted on an aluminum skid. It is a static device which is installed in the fuel system to remove entrained water and solid contaminants in the fuel. Inlet, outlet and water drain connections are provided. The inlet and outlet connections are identical, manually operated 1 inch ball valves. The water drain connection is a 1/2 inch manually operated ball valve. Quick disconnect couplings for 1 inch hose are provided at the fuel inlet and outlet connections. A plexiglass sight gage with a ball float inside is mounted on the side of the tank to indicate the water level in the tank base. The cover is held in place by four bolts and contains a manual pressure vent valve to permit bleeding air from the unit. 3-7. Maintenance of External Fuel Filter (fig. 3- 1). a. Sight gage inspection. (1) Inspect sight gage for cracked body or leaking around gasket. (2) If malfunction exists, refer to organization maintenance. b. Filter/Separator Assembly Inspection. (1) Inspect skid and frame for bent or broken member, corrosion and general condition of paint. (2) Refer all deficiencies to organizational maintenance. c. Canister and Filter Element Inspection. (1) Canister and filter element inspection is required to maintain serviceability of the unit. (2) Inspect the filter element for clogging or rupture. Inspect the canister for a damaged or clogged screen. WARNING Depressurize Filter/Separator before removing the cover assembly by opening the manual pressure vent valve located in the center of cover. 3-1