TM 55-2210-223-12 TO 45A2-2-14-41 Table 2-1. Operator/Crew Preventive Maintenance Checks and Services NOTE Within the designated interval, these checks are to be performed in the order listed. B - Before D - During A -  After INTERVAL ITEM PROCEDURES: EQUIPMENT ITEM TO BE CHECK FOR AND HAVE REPAIRED IS NOT READY/ NO.   B D A INSPECTED OR ADJUSTED AS NEEDED AVAILABLE IF: MAKE THE FOLLOWING WALK-AROUND CHECKS: 1 Exterior of a.  Visually inspect the following Any component Locomotive items for proper operations, damaged that cracks, breaks, broken welds, and would impair damage: locomotive operation. Cab Truck Couplers Coupling mechanism b.  Visually inspect foundation Parts are loose brake for loose and dragging parts.    or dragging. · c.  Visually inspect wheels for Wheel is defects and worn or missing brake- damaged.  Brake- shoes.  Ensure brakeshoes are in shoe is worn or proper alinement and brake cylinder missing. piston travel is between 3 and 6 inches (76 and 152 mm). d.  Check side bearing clearance on No clearance both trucks.    is apparent. e.  Inspect under locomotive for Evidence of evidence of fluid leakage (fuel, Class III leak. oil, and coolant). 2 Sandtraps Check that the sandtraps contain Sanders are not and Sanders sufficient sand.  Add sand as operating. required.  Check sanders for proper operation. 3 Fuel Supply Fuel Supply    Check fuel supply in sight glass There are fuel on fuel tank.  Fill tank with leaks. proper grade of fuel.  Check for fuel leaks. 2-22