TM 9-2320-361-20 8-25. AIR RESERVOIRS REPLACEMENT (M764) (Contd) 6. Install airline (10) on elbow (9). NOTE Assistant will help with step 7. 7. Install air reservoir (18) with two retaining straps (16), four screws (15), and new locknuts (20). 8. Install air line (21) on elbow (19). 9. Install air line (10) on valve (11). FOLLOW-ON TASKS: Install air system safety valve (para. 8-20). Start engine (TM 9-2320-361-10), build up air pressure, and check for leaks. Install spare tire (TM 9-2320-361-10). 8-61