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TM-9-2320-364-20-4 Palletized Load System (PLS) M1074/M1075 Manual
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2-45.   GENERAL REPAIR INSTRUCTIONS
TM 9-2320-364-20-4      2-3215 Do not use soap or alkalies for cleaning tank interiors. k. Oil and Fuel Tanks.  Pay special attention to all warnings and cautions when working on truck’s fuel tank. Oil tanks and fuel tanks should be flushed, using a spray gun and drycleaning solvent. (Item 87, Appendix C). l. Battery.  Exterior surfaces of the electrical system and battery should be cleaned with a weak solution of baking soda and water.  Apply solution with a bristle brush to remove corrosion.  Pay special attention to all warnings and cautions when working on batteries. m. Hydraulic System.  When cleaning hydraulic system parts use drycleaning solvent P-D-680.  Clean and dry parts thoroughly to make sure no residue remains.  If a coating preservative is required before assembly, apply a light film of lubricating oil (Item 54, Appendix C).  If petroleum-free solvents are not available, use the same hydraulic fluid as used in the truck’s system. 2-44.    GENERAL INSPECTION INSTRUCTIONS. a. Cleaning. Clean all parts before inspection.  Check for defects such as physical distortion, wear, cracks and pitting. b. Sealing Surfaces.  Inspect all surfaces in contact with gaskets, packings, or seals for nicks and burrs.  If any defect is found, remove it before assembly. c. Bearings.  Inspect bearings for rusted or pitted balls, races, or separators.  Inspect balls and races for brinnelling, abrasion and serious discoloration.  The following are conditions for bearing rejection: (1) Cuts or grooves parallel to ball or roller rotation. (2) Fatigue pits (not minor machine marks or scratches). (3) Cracks. d. Gears and Splined Shafts.  Inspect gears and splined shafts for wear, pittings, rolling, peening, scoring, burning, brinnelling and fatigue cracks. e. Tubing, Hoses and Fittings.  Inspect all hose surfaces for broken or frayed fabric.  Check for breaks caused by sharp kinks or contact with other parts of the truck.  Inspect copper tubing lines for kinks.  Inspect fittings and tubing and mating surfaces and threads for nicks, cracks scratches and other damage.  Replace any defective part. After assembly and during initial truck operation period, check for leaks. f. Electrical Parts.  Inspect all wiring harnesses for broken, chafed, or burned wiring.  Inspect all terminal connectors for loose connections and broken parts. g. Metal Parts.  Visually inspect all castings and weldments for cracks.  Parts that carry a great load should receive magnetic particle inspection.  Critical non-ferrous parts may be inspected with fluorescent penetrant. h. Drain Plugs.  When removing drain plugs from transmission, engine, hydraulic system components, or axle differential and planetary hubs, check amount of sediment on plugs.  Accumulations of grit or fine metal particles may indicate actual or potential component failure.  A few fine particles are normal.  This inspection helps to determine if there are defective parts prior to internal inspection of the component and to predict degradation of the equipment.

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