TM 9-2320-209-20-3-2 13-42. AIR BRAKE HOSE REPAIR. TOOLS: 1 1/16-inch wrench 1-inch wrench Hacksaw 6-inch steel ruler SUPPLIES: Compressed air source, 30 psi max PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. a. Preliminary Procedure. Remove air brake hose from truck. Refer to para 13-41. b. Repair. NOTE Repair of air brake hose is limited to replacement of adapters and pipe to hose. 1. Slide coupling nut (1) with spring (2) back on hose (3) so sleeve (4) is uncovered. 2. Using hacksaw, saw off end of hose (3) just behind sleeve (4). Throw away sleeve with piece of hose. 3. Take coupling nut (1) with spring (2) off of hose (3) and throw away nut and spring. GO TO FRAME 2 13-283