TM 9-2320-209-34-2-1 12-4. FRONT AND REAR SERVICE BRAKE DRUM REPAIR. TOOLS : Drum turn arbor fixture, pn 11660096 SUPPLIES : None PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. a. Preliminary Procedure. Remove brake drum assembly. Refer to TM 9-2320-209-20. b. Cleaning. 1. 2. WARNING Do not use a wire brush or compressed air to clean brake drum (1). There may be asbestos dust on the drum which can be dangerous to your health if you breathe it in. Clean dirt or mud from brake drum (1) using a brush and water. 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. To take off any oil or grease from brake drum (1), use dry cleaning solvent. END OF TASK 12-5