TM 9-2320-209-20-3-3 18-62. MANHOLE COVERS REMOVAL, REPAIR, AND REPLACEMENT (TRUCKS M50A1 AND M50A2). TOOLS: 15/16-inch open end wrench 11/16-inch open end wrench Pliers SUPPLIES: None PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. a. Removal of Outer Manhole Cover. FRAME 1 1. Take off padlock (1). NOTE The number of flat space washers (4) may vary from truck to truck. 2. Using pliers, take out and throw away cotter pin (2). Slide out pin (3), and take out five flat space washers (4). 3. Unlatch handle (5) and pull up yoke (6). 4. Take off cover (7) and gasket (8). END OF TASK 18-343