TM 9-2350-256-2015 Main winch gear case dram.a. Open access cover (17).b. Operate main winch to warm oil to operating temperature. Shut down all systems.c. Open hull dram valves (21) and open main winch drain valve. After draining, close main winch dramvalve and hull drain valves.d. Refill main winch (see paragraph J-5b7) with oil (see Table J-1).e. Close access cover (17).16 Hydraulic reservoir drain.a. Open access door (14).b. Before draining hydraulic system, warm hydraulic fluid by idling main engine at 675 rpm for 5 minuteswith main hydraulic pump engaged and all hydraulic levers in neutral.c. Shut down engine and open hull drain valves. Open hydraulic reservoir dram valve (13). After reservoiris drained, close hydraulic reservoir drain valve and hull drain valves.d. Refill reservoir (see paragraph J-5b17).NOTEEach time hydraulic oil is changed, hydraulic reservoir filter should be serviced (see paragraphJ-5b18).e. Close access door (13).Change 1 J-19
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