TM 10-6640-238-13 4-163 4-67.    AIR-GAS DRYING APPARATUS. This task consists of: a. Remove b. Install INITIAL SET-UP Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 1) Materials/Parts Required Lockwashers, (2) REMOVE Remove Air-Gas Drying Apparatus.  See Figure 4-63. a. Disconnect air line tube (1) from adapter (2). b. Disconnect inlet airline hose (3) from adapters (4 and 5). c. Remove screw (6), two washers (7), lockwasher (8), nut (9), and clamp (10).  Repeat step for remaining clamp and remove air-gas drying apparatus (11).  Discard Lockwashers. d. Remove adapters (2, 4, and 5) from air-gas drying apparatus (11). INSTALL Install Air-Gas Drying Apparatus.  See Figure 4-63. a. Install adapters (2, 4, and 5) onto air-gas drying apparatus (11). b. Install air-gas drying apparatus (11) and secure using screw (6), two washers (7), lockwasher (8), nut (9), and clamp (10).  Repeat step for remaining clamp. c. Connect inlet airline hose (3) to adapters (4 and 5). d. Connect air line tube (1) to adapter (2).