TM 9-2320-209-20-3-2 13-19. SERVICE BRAKE PEDAL ADJUSTMENT. TOOLS: 6-inch ruler 7/8-inch wrench Pliers l-inch wrench SUPPLIES: Marking chalk, SS-C-266F Rag Solvent, dry cleaning, type II (SD-2), Fed. Spec P-D-680 PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. FRAME 1 1. 2. 3. 4. Using chalk, mark brake pedal (1) at floorboard (2). Using hand, push brake pedal pad (3) down easily until free play is used up. Using chalk, mark brake pedal (1) at floorboard (2). Take hand away from brake pedal pad. Using 6-inch ruler, measure between chalk marks. If measure is less than 1/4-inch, or more than 1/2-inch, free play is bad. WARNING Dry cleaning solvent is flammable. Do not use near an open flame. Keep a fire extinguisher nearby when solvent is used. Use only in well-ventilated places. Failure to do this may result in injury to personnel and damage to equipment. Using rag and dry cleaning solvent, clean chalk marks off brake pedal (1). IF FREE PLAY IS BAD, GO TO FRAME 2. IF FREE PLAY IS GOOD, END OF TASK 13-146