TM-9-2350-277-20-4 Unit Maintenance Manual Volume 4 M113A3 M577A3 M1064A3 M1068A3 M58 Download
Page 514 of 884
TM 9-2350-277-20-4 REPLACE DRIVER’S HATCH VISION BLOCK LOCKS AND SEALS — Continued 0535 00 4. Install spring (2) and thumbscrew (1) on periscope clamp (3). Deform first thread of thumbscrew to prevent easy removal. 0535 00-4