Service of Door Seals

Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) (Cont). - TM-5-4220-227-14_109

Figure 4-4. Service of Medical Lock Outer Door Seals

TM-5-4220-227-14 MK12 Surface Supported Diving System (SSDS) (NSN 4220-01-097-5674) Manual
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TM 5-4220-227-14 4-19. Service of Door Seals. a. Chamber Inner and Outer Lock Doors. (figure 4-3) NOTE Procedure is the same for both doors. (1) Open door (1) and gently pry preformed packing (2) from door seat (3). (2) Replace preformed packing if severely nicked or cut. (3) Lubricate preformed packing to be installed using halocarbon grease (Appendix E, Item 13). (4) Install preformed packing (2) in door seat (3) and close door (1). Door should close and lock easily. Figure 4-3. Service of Chamber Inner and Outer Door Seals. b. Medical Lock Outer Door. (figure 4-4) (1) Open door (1) and gently pry preformed packing (2), seal ring (3) and second preformed packing (4) from seat in medical lock door frame assembly (5). NOTE Twelve springs (6) are loose in door seal when packing is removed. 4-11

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