TM 9-2350-277-20-4ADJUST RAMP LOCK (M577A3 AND M1068A3 ONLY) — Continued 0522 0012. With ramp lock lever (1) remaining in locked position, adjust clevis (2) 3/16 inch (5 mm) short of pin (4) fitting freelywith arm (3).13. Release lever (1) and align clevis (2) with arm (3). Secure with headed pin (4) and new cotter pin (5). Tightenlocknut (6).14. Loosen two nuts (7) on lever (1) and move arm (3) to obtain 3/8 inch (10 mm) clearance between end of clevis (2) andbulkhead. Tighten nuts (7).15. Raise and lock ramp (see your -10).NOTERamp seal should be compressed enough to prevent water leakage, yet without metal-to-metalcontact between ramp and hull. Make linkage shorter to compress seal more. Make linkagelonger to compress seal less.16. Check ramp for proper seal. Stand inside the vehicle with ramp up. Insert a thick piece of paper or inspection tagbetween ramp (8) and hull (9). The paper should slide freely around edge with no metal to metal contact. If ramp is tootight or too loose, repeat Steps 1 - 16.0522 00-5
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