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LO 5-1940-277-12
LI 1940-12
1. DRIVE SHAFTS. Remove aft cockpit. Rotate drive shaft by hand to locate grease fittings on both U-joint
and slip joint. Use a hand-operated grease gun and give each U-joint and slip-joint one to two full plumps
of grease. Install aft cockpit. Immediately lubricate U-joints and slip-joints if drive shaft is washed or
submerged in water.
2. CAPSTAN. Whichever occurs first, 1200 hours or every 15 months, disassemble and clean the housing,
gears, and bearings. Apply a light coat of grease to inside of housing and gears; pack the bearings;
assemble: and check for proper operation. Immediately disassemble, clean and lubricate the capstan if it
is submerged in water.
3. ENGINE OIL. Check level before operation. Fill to full mark as required. Change filter and oil after 250
hours of operation or semi-annually. AOAP sampling is not required. Change oil and filter on specified
interval. Change oil using hand-pump mounted on engine. After installing new filter and oil, operate the
engine and check for leaks. Stop engine and check oil level and refill as necessary.
4. TRANSMISSION OIL. Check level before operation. Level should be at or just above full mark; add oil as
required. To remove dipstick, turn T-handle counterclockwise. To install, turn clockwise until it cannot be
removed by a moderate pull. Change oil after 500 hours of operation or annually. AOAP sampling is not
required for the transmission. To drain oil, disconnect return hose and reducing plug from transmission.
Remove and clean oil filter assembly. Install filter, reducing plug, and return hose. Fill transmission with oil.
Operate to check for leaks, stop and check oil level and refill as necessary.
5. THRUST BEARING OIL RESERVOIR. When checking or adding oil to reservoir ensure there is no air-
lock between the thrust bearing and reservoir. If oil becomes contaminated with water (becomes milky in
appearance), drain and replace.
6. GREASE CUPS. Give each grease cup a half-turn after every 5 hours of operation. When cup is fully
compressed, i.e. it cannot be turned further, remove, clean thoroughly to remove old grease, pack with
new grease, install and complete the half-turn.
7. FLEETGUARD LUBRICITY FILTER. Remove filter and replace after 250 hours of operation or 6 months,
whichever comes first.
Note: Damage to the fuel pump and injectors can result if JP8 is used and the Fleetguard filter has not
been serviced on schedule.
8. FUEL FILTERS. Inspect fuel-water separator bowl before operation. Drain water as necessary. Replace
fuel-water separator elements and fuel filters on engine after 250 hours of operation or annually. Clean
area around filter before removing to prevent dirt from entering the fuel system.
A copy of this Lubrication Order will remain with the equipment at all times. Instructions contained herein are
mandatory.
Card 4 of 4
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