TM 9-2320-209-10-1 d. After Fording. TOOLS: Straight bar plug wrench Ratchet wrench FRAME 1 1. Dry brakes out by stepping down and letting go of brake pedal until truck stops without grabbing. 2. Stop vehicle and shut down engine. (Refer to para 4-6e.) 3. Using a straight bar plug wrench and ratchet handle, unscrew drain plug (1) from flywheel housing drain port (2). 4. Screw drain plug (1) into storage boss (3). 4-417