Engine Preservation; Compliance - LIMBACH L 2400 EF Operating And Maintenance Manual

Engine performance check
Move throttle lever to full-throttle stop. Engine has to reach the full-throttle static speed
(refer to flight and maintenance manual of aircraft manufacturer). Set variable-pitch
propellers to Take-off pitch.

8.18 Engine Preservation

Engines that are taken out of operation for more than 6 months shall be preserved.
Note:
At high humidity, it is recommended to close the exhaust muffler exit.

8.18.1 Compliance

Installed engine:
•
Warm up engine and drain engine oil after engine shut-down. Change oil filter.
•
Clean engine thoroughly.
•
In any case, corrosion protection has to be performed by using fresh engine oil.
•
Charge 3.5 l of engine oil and run engine for approx. half a minute with increased idle speed.
•
Remove air filter and spray 25 to 30 cm³ of engine oil slowly into the intake opening of the
running engine. Stop engine during spraying.
•
Wet throttle linkage and boost pressure limiter linkage with engine oil.
Caution:
After corrosion protection, the engine must not run any more as this would disable
corrosion protection.
Removed engine:
•
Remove spark plugs and spray engine oil into the combustion chambers so that the
upper part of the cylinder barrel is wetted, too.
•
Crank engine manually or with starter for a few turns.
•
Spray spark plugs with engine oil and install them again.
•
Wet all linkages with engine oil.
•
Close all openings to avoid entry of dirt or moisture
•
Spray engine surface with engine oil. Take care of not exposing rubber parts and
electrical connectors to engine oil.
Edition: 20.06.2018
Operating Manual
L 2400 EF/DF/ET/DT/DX/DS
Page: 39/53