TM 10-3930-669-20 Table 2-2.  Preventive Maintenance Checks and Services Location Item Interval Item to Procedure Not Fully Mission No. Mo/Hr Check/Service Capable If: Body.  Cab.  and Hull 1 12/1,000 Frame Check for broken or cracked welds. 2 12/1,000 Mounting Check for cracks, breaks, rust, or Brackets looseness. 3 12/1,000 Cab and Check for cracks in weldments or metal Mounting Pads on structure, loose or missing screws, worn or damaged rubber mounting pads, and corrosion. Engine 4 6/500 Intake Manifold Check for damaged pipes, loose clamps, and blown gaskets or seals. 5 6/500 Exhaust Check for damaged pipes, loose clamps, Manifold and blown gaskets or seals. 6 6/500 Muffler Check muffler for looseness or leaks. Check for damaged pipes, loose clamps, and blown gaskets or seals. 7 6/500 Alternator Check that ventilation slots and air spaces are clear and unobstructed. 8 6/500 Fuel Filters Change fuel filters (Para 4-8). 9 2/100 Engine Cooling Check cooling fins for restriction. Fins 10 6/500 Batteries Check battery electrolyte level.  Refer to TM 9-6150-200-14. 2-7