Engine Oil System Description - Diamond DA 42 NG Maintenance Manual

DA 42 NG AMM
2. Description
The AE E4-B or AE E4-C (if MÄM 42-600 is installed) engine is a liquid-cooled, in-line four-stroke four
cylinder engine with a double overhead camshaft (DOHC). The valves are actuated by the cam
follower. The direct fuel injection is realized with a common rail technique and the engine is charged
by a turbo charger. All engine components are controlled by an EECU system. The engine is equipped
with an electrical starter, an alternator, a water pump, an oil pump, a coolant system and an oil cooler.
The propeller is powered by a directly integrated gearbox with an integral torsional vibration damper.
3. Engine Oil System
The engine has the usual wet sump oil system. The sump has a maximum capacity of 7 liter
(7.4 US qt). Refer to the Airplane Flight Manual Chapter 2 for data about the oil types to use in the
engine.
The internal oil pump supplies oil to all bearings and other components that require oil. Oil galleries
inside the engine crankcase and cylinder head supply oil to the internal components.
Figure 1 shows the location of the items that you can maintain on the engine oil system of the
AE E4-B engine. The engine has these maintenance locations:
)
A full-flow oil filter located at the top left adjacent to the cylinder head. You must replace the filter
at the times given in Chapter 05.
)
An engine oil drain plug at the rear left of the engine sump.
)
An oil filler located at the left of the crankcase.
)
A gearbox oil filler plug located at the top of the gearbox.
)
A gearbox oil level window located at the LH side of the gearbox. When the oil covers half of the
inspection window, the gearbox contains the correct quantity of oil.
)
A gearbox oil drain plug located at the bottom of the gearbox.
)
A oil separator is located under the injector cover.
Doc # 7.02.15
Rev. 4
AIRCRAFT
72-00-00
Engine
Page 3
15 Mar 2018