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 HOLD-OPEN HOOK AND BUMPER (M577A3 AND M1068A3 ONLY) — Continued 0533 00 6. Remove two screws (16), locknuts (17), four washers (18), and block (19) from hull bracket. Discard locknuts. CLEANING 1. Check spring. 2. Check bumper. REPAIR OR REPLACEMENT 1. Replace broken or weak spring. 2. Replace bumper that is cut, hard, or has stripped threads. 0533 00-2