TM-9-2350-277-20-4 Unit Maintenance Manual Volume 4 M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-20-4 REPLACE DRIVER’S HATCH VISION BLOCK LOCKS AND SEALS — Continued 0535 00 4. Scrape seal (5) from vision block opening. NOTE Steps 5 - 8 apply to M1064A3 only. 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 driver’s hatch. 0535 00-2