TM 9-2320-209-20-3-2 Section IV. HYDRAULIC BRAKE SYSTEM 13-11. HYDRAULIC WHEEL CYLINDER REMOVAL AND REPLACEMENT. TOOLS: 7/16-inch wrench 9/16-inch wrench Return spring pliers SUPPLIES: None PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set, wheels chocked. a. Preliminary Procedure. Remove hub and brake drum assembly. Refer to para 14-4. b. Removal. FRAME 1 1. Using return spring pliers (1), unhook spring (2) from brakeshoe (3). GO TO FRAME 2 13-73