Dash 8 OIL Quantity “SERVICING”

ENGINE OIL SERVICING

In order to ensure safe practices, pilots should be familiar with the procedures and cautions dealing with servicing the engine oil system.

ENGINE OIL SERVICING

ENGINE OIL SERVICING

ENGINE OIL SERVICING

• Use only oil that conforms to Spec. (MIL-L-23699).

• Oil should be obtained from a clean sealed can.

•Before shut down run engine for a minimum of 20 seconds with the propeller in feather selection.This ensures that the maximum amount of oil is returned to the oil tank.

•Check engine oil level within 30 minutes with the oil temperature as a minimum above 45 degrees C.

CAUTION: OIL LEVEL ABOVE THE MAX MARK CAN NOT ALWAYS BE CLEARLY SEEN ON THE SITE GLASS GAUGE. OIL ABOVE THE MAX MARK CAN POSSIBLY RESULT IN AN INTERNAL LEAK, OIL SMELL, SMOKE IN THE CABIN AND AN INTERNAL FIRE.

ENGINE OIL SERVICING

• Add engine oil as follows:

• If oil level is below the MAX mark add oil to the required level, never exceeding the MAX indication nor letting the level drop below MIN or “ADD 3 MARKS” on the site gauge.

• Engines left overnight may have misleading oil level indications. If engine did not have level checked after the last flight or the oil temperature, as a minimum is not above 45 degrees C, an engine run must be carried out .

• The optimum quantity level when adding oil, is one quart less than the full mark on the site gauge (1 ADD line).

Fill to this level.

OIL CONSUMPTION MONITORING

• When an oil consumption trend monitoring is conducted the amount of oil added to bring level on the dipstick or sight glass to MAX is recorded in graph form. The unit may be lb/hr, kg/hr, quart/hr or liter/hr.

•0.15 liter/hr is maximum oil consumption permissible.

•Oil level check and replenishing must be carried out at intervals recommended by the manufacturer.

• When carrying out oil system top-up, for the purpose of trend monitoring, measure and record amount of oil added to top up the level to the MAX mark.

• Check the number of flight hours since the last top up.

• Using the following formula, determine the oil consumption rate:

Oil consumption / flight hours

•Plot oil / hour value on a graph

•Oil consumption above maximum permissible, or a sudden or gradual increase, must be investigated.

OIL CONSUMPTION MONITORING

END OF PRESENTATION