TM 9-2320-209-20-3-3 18-90. TOOLBOX REMOVAL AND REPLACEMENT (TRUCK M756A2). TOOLS : 9/16-inch wrench (2) ¾-inch wrench (2) ½-inchwrench (2) Wood block, 2x 4x 6inches (10) Hydraulic jack, 12-ton capacity SUPPLIES: None PERSONNEL: Two EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. a. Removal. FRAME 1 1. Working on right side of truck, unlatch and open tool box door (1). 2. Using ½-inch wrenches, unscrew and take out two screws (2) and nuts (3). 3. Using ½-inch wrenches, unscrew and take out two screws (4) and nuts with washers (5). 4. Take off step plate (6). GO TO FRAME 2 18-487