TM 9-2320-209-10-1 e. Power Discharging the Tank Sections. TOOLS: 2-inch spanner wrench FRAME 1 1. 2. 3. 4. 5. 6. 7. Start engine. (Refer to para 4-6b.) Park truck near area where water is to be let out. Stop engine. (Refer to para 4-6e.) Open rear compartment doors (1). Turn dust cover (2) left and take it off pump delivery line discharge valve adapter (3). Put 1 1/2 x 2-inch reducer coupling (4) onto pump delivery line discharge valve adapter (3), turn right, and use spanner wrench to tighten. Place one end of discharge hose (5) onto coupling (4), turn right, and use spanner wrench to tighten. Place discharge nozzle (6) onto other end of hose (5), turn right, and use spanner wrench to tighten. GO TO FRAME 2 4-186