TM 9-2320-209-20-3-3 18-64. WATER TANK FILLER COVER REMOVAL, CLEANING, INSPECTION, REPAIR, AND REPLACEMENT (TRUCKS M50A1, M50A2 AND M50A3). TOOLS: 6-inch pliers SUPPLIES: Clean rags PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. a. Removal. FRAME 1 NOTE Some trucks have only one cotter pin (1). 1. Using pliers, take out and throw away two cotter pins (1). 2. On trucks M50A1 and M50A2, unlatch handle (2). 3. Slide out pin (3). 4. Pull up yoke (4). 5. Take off cover (5) and gasket (6). END OF TASK 18-357