TM 9-2320-209-20-3-2 CAUTION 1. 2. Do not over tighten coupling nuts. Screw on and finger tighten coupling nuts on fittings, then using 13/16-inch wrench, tighten nuts 1/8 turn. Put tube (1) with coupling nuts (2 and 3) in place. Using 13/16-inch wrench, screw on and tighten coupling nut (2). Using 13/16-inch wrench, screw on and tighten coupling nut (3). NOTE Follow-on Maintenance Action Required: 1. Do air system leak test. Refer to Part 1, para 1-5. 2. Replace spare wheel. Refer to TM 9-2320-209-10. END OF TASK 13-236