TM 9-2320-361-20 8-35. SHUTTLE (DOUBLE CHECK) VALVE REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: APPLICABLE MODELS M275A2 MATERIALS/PARTS Locknut Antiseize tape (Appendix C, Item 27) REFERENCES (TM) TM 9-2320-361-10 TM 9-2320-361-20P EQUIPMENT CONDITION Parking brake set (TM 9-2320-361-10). Air reservoirs drained (TM 9-2320-361-10). GENERAL SAFETY INSTRUCTIONS Do not disconnect air lines before draining air reservoirs. a. Removal WARNING Do not disconnect air lines before draining air reservoirs. Small parts under pressure may shoot out with high velocity, causing injury to personnel. NOTE Tag all air lines and hoses for installation. 1. Remove two connectors (8) from switch (9). 2. Remove air line (2) from elbow (1). 3. Remove air line (5) from adapter (6). 4. Remove air line (13) from adapter (12). 5. Remove locknut (3), screw (11), and shuttle valve (7) from crossmember (4). Discard locknut (3). NOTE Mark fittings for installation. 6. Remove elbow (1) and two adapters (6) and (12) from shuttle valve (7). 7. Remove switch (9) and adapter (10) from shuttle valve (7). NOTE Use old fittings and switch when installing new shuttle valve. Wrap all male pipe threads with anti seize tape before installation. 1. Install adapter (10) and switch (9) on shuttle valve (7). 2. Install two adapters (12) and (6) and elbow (1) on shuttle valve (7). 3. Install shuttle valve (7) on crossmember (4) with screw (11) and new locknut (3). 4. Install air line (13) on adapter (12). 5. Install air line (5) on adapter (6). 8-84