Flushing The Oil Circuit; Accessories (Including Radiator, Oil Hoses, Clamps Etc.) - Rotax 914 Series Maintenance Manual

5.5)

Flushing the oil circuit

- Dismantle and flush oil lines as per instructions of the aircraft manufacturer.
- Clean the oil tank.
- Temporary oil lines (only for flushing) must be fitted so that the oil cooler is not
connected. The return line is routed into a separate, clean receptacle and not
back to the oil tank.
◆ NOTE
- Fill the oil tank with approx. 3 l (0.8 gal (US)) of engine oil.
▲ WARNING: Ignition "OFF"and system grounded.
■ CAUTION:
- Crank the engine by hand on propeller in engine rotating direction to transfer
the oil from the oil tank to the engine and back to the separate container. This
procedure is completed when clean oil comes out of the oil return line. During
the procedure periodically check oil level in the oil tank.
Carefully drain oil, capture in a clean open container and examine closely for
chips as described previously. The flushing process is completed when there
are no metal chips or only negligible amounts of metal chips are detected.
If necessary, repeat the flushing process.
- Reinstall clean oil lines and new oil cooler according to instructions of the
aircraft builder.
- Install new oil filter and fill the system with engine oil.
- Reconnect negative terminal of aircraft battery.
- Venting of the oil system, see 12-00-00, sec. 5.2.2.
5.6)

Accessories (including radiator, oil hoses, clamps etc.)

■ CAUTION:
Effectivity: 914 Series
Edition 1 / Rev. 0
BRP-Rotax
MAINTENANCE MANUAL
Otherwise, metal chips could penetrate the radiator or oil tank
during flushing.
Disconnect negative terminal of aircraft battery.
The oil level in the tank must not drop below the end of suction
pipe, otherwise air will be sucked in again.
Inspect all the equipment in accordance with the Maintenance
Manual of the aircraft manufacturer.
12-00-00
page 42
May. 01/07