TM 9-2320-209-20-3-3 18-51. MANHOLE COVER REMOVAL AND REPLACEMENT (TRUCKS M49A1C AND M49A2C). TOOLS: 9/16-inch wrench (2) Scraper SUPPLIES: Manhole cover gasket Solvent, dry cleaning, type II (SD-2), Fed. Spec P-D-680 Rags PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. WARNING Smoking, open flame, sparks, and glowing or hot objects are not allowed within 50 feet of work area. Fuel may catch fire and explode, causing injury to personnel and damage to equipment. a. Removal. FRAME 1 1. Using wrenches, hold screw (1) and unscrew and take off nut (2) and washer (3). Take out screw. 2. Take off clamp ring (4). Take off manhole cover (5). Take off gasket (6) and throw it away. END OF TASK 18-259