TM-9-2350-277-20-4 Unit Maintenance Manual Volume 4 M113A3 M577A3 M1064A3 M1068A3 M58 Download
Page 343 of 884
TM 9-2350-277-20-4 REPLACE COMMANDER’S CUPOLA VISION BLOCK LOCKS AND SEALS (M1064A3 ONLY) — Continued 0491 00 INSTALLATION NOTE Surface on seal marked BOND THIS SIDE should be glued to cupola. 1. Apply adhesive to cleaned mating surfacearound vision block opening. Allow adhesive to become tacky. Install new seal (8) on cupola. 2. Install washer (7) and post (6) in cupola. TIGHTEN POST TO 54-59 LB-FT (73-80 N m) TORQUE. 3. Install periscope clamp (3) on post (6). Secure with washer (5) and bolt (4). TIGHTEN BOLT TO 144-168 LB-IN (16-19 N m) TORQUE. 4. Install spring (2) and thumbscrew (1) on periscope clamp (3). Deform first thread of thumbscrew to prevent easy removal. FOLLOW-THROUGH STEPS 1. Install vision block (see your -10). END OF TASK 0491 00-3/4 blank