TM-9-2350-261-20-3 Unit Maintenance Manual Volume 3 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
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TM 9-2350-261-20-3 REPLACE COMMANDER’S HATCH VISION BLOCK, LOCKS, AND SEALS — Continued 0451 00 NOTE Steps 5 - 8 apply to the M1064 only. NOTE Six vision block locks and four seals are on the commander’s hatch. Task is for one lock and seal. 5. Remove thumbscrew (1) and spring (2) from periscope clamp (3). 6. Remove bolt (4), washer (5), and periscope clamp (3) from post (6). 7. Remove post (6) and washer (7) from commander’s hatch. 8. Scrape seal (8) from vision block opening. 0451 00-2