15 Main winch gear case dram.
Open access cover (17).
Operate main winch to warm oil to operating temperature. Shut down all systems.
Open hull dram valves (21) and open main winch drain valve. After draining, close main winch dram
valve and hull drain valves.
Refill main winch (see paragraph J-5b7) with oil (see Table J-1).
Close access cover (17).
16 Hydraulic reservoir drain.
Open access door (14).
Before draining hydraulic system, warm hydraulic fluid by idling main engine at 675 rpm for 5 minutes
with main hydraulic pump engaged and all hydraulic levers in neutral.
Shut down engine and open hull drain valves. Open hydraulic reservoir dram valve (13). After reservoir
is drained, close hydraulic reservoir drain valve and hull drain valves.
Refill reservoir (see paragraph J-5b17).
Each time hydraulic oil is changed, hydraulic reservoir filter should be serviced (see paragraph
Close access door (13).