CSP
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E
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1
ROTORCRAFT FLIGHT MANUAL
Handling, Servicing,
and Maintenance
MD 500E
(Model 369E)
Revision 14
7
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14
FAA Approved
Fuel draining:
Fuel draining should be accomplished with helicopter as level as possible.
The fuel system may be defueled in two ways: One is to defuel through the
filler port, using a pump. The other method is to open the drain valve on
fuselage underside.
The fuel cell drain valve is spring−loaded closed and is opened by depress-
ing an internal plunger.
After defueling, be sure to check drain valve for leakage.
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9. ENGINE OIL SYSTEM
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SERVICING
The engine oil tank filler is on the right side of the helicopter (Ref.
Figure 7−4). A liquid level sight gauge for checking oil level in tank is visible
through a transparent window near the filler.
NOTE
:
Oil level should be checked within 15 minutes after shutdown.
Replenish with correct oil until oil level is FULL on sight gauge.
DO NOT use Mobil SHC 626 oil in the engine oil system.
Make certain that oil tank filler cap is secured after servicing.
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10. MAIN ROTOR AND TAIL ROTOR TRANSMISSION
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SERVICING
Main rotor transmission:
Check transmission oil level at liquid level sight gauge (Ref. Figure 7−4)
NOTE
:
Indicated oil level may be incorrect if aircraft is not level or has been ground
handled in a tail
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low attitude since last flight.
Replenish with correct oil until oil level is at the dashed lines above the
ADD mark on sight gauge.
Mixing of oils within an oil series, not in the same group, is not rec-
ommended. If oils of different groups are mixed, flush and re
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ser-
vice gearbox. Mixing of oils from different series is prohibited.
NOTE
:
If oil was drained from transmission cooler, ground run helicopter for 15 minutes
after replenishing with oil and recheck oil level at sight gauge. Replenish oil as
necessary. This purges air from the oil cooling system and ensures that entire
oil cooling system is full.
Fill main transmission by lifting breather−filler cap and inserting funnel
into opening. Check that spring−loaded cap closes when funnel is removed.
CAUTION
CAUTION