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 MAP BOARD (M577A3 ONLY) — Continued 0580 00 7. Remove eight locknuts (14), screws (15), four hangers (16), and D-rings (13) from map board (3). Discard locknuts. INSTALLATION 1. Pass four hangers (16) through four D-rings (13) and align hangers on map board (3). Secure hangers with eight screws (15) and new locknuts (14). 2. Install four hooks (12) on four D-rings (13) and chains (11). Squeeze both ends of hooks to secure. 3. Install four hooks (10) on four chains (11). Squeeze on end of hooks to secure. 4. Align four brackets (8) on map board (3). Secure with four screws (9). 5. Install two springs (7) on four brackets (8). 6. Install two clamps (2) on two bulkhead stops. Secure with two washers (6), spacers (5), bolts (1), and new cotter pins (4). 0580 00-2