insTAllATiOn direcTiVe
6
MAY 2006
N45 MNA M10
N67 MNA M15
26. PREPARING THE ENGINE FOR LONG
IDLE PERIODS
To prevent oxidation to the internal parts of the engine and
to some components of the injection system, if idle periods
exceeding two months are expected, the engine needs to
be prepared with
six-months periodicity,
proceeding as
follows:
1. Drain the lubricating oil from the sump, after heating the
engine.
2. Pour 30/M protective oil (alternatively, oil conforming
with MIL 2160B Type 2 specifications) into the engine to
the “minimum” level marked on the dipstick.
Start the engine and let it run for about 5 minutes.
3. Drain the fuel from the injection line and from the filter,
taking care to avoid letting the fuel come in contact with
the auxiliaries belt.
4. Connect the fuel line to a tank containing CFB protective
liquid (ISO 4113) and assist the inflow of the liquid by
pressurizing the line and turning the engine over for
about 2 minutes, after excluding the operation of
the injection system. The required operation may be
carried out by directly polarizing the terminal 50 of the
electric starter motor with positive voltage 12 V, using a
conductor prepared for the occasion.
5. Nebulize 30/M type protective oil at the rate of about
10 g per liter of displacement:
N45 MNA M10 = 45g
N67 MNA M15 = 70g
into the engine intake, while the engine is turning over
as described above;
6. Close with suitable stoppers or seal with adhesive tape
all engine intake, exhaust, aeration and venting ports.
7. Drain the residual 30/M protective oil from the sump;
it may be re-used for 2 more engine preparation
operations.
8. Apply tags with the inscription “ENGINE WITHOUT
OIL” on the engine and onboard panel.
9. Drain the coolant, if it has not been mixed with anti-
freeze and corrosion inhibiting agents, affixing tags to
indicate that the operation has been carried out.
If external parts of the engine are to be protected, spray
protective liquid OVER 19 AR onto unpainted metal parts,
such as flywheel, pulleys and others; avoid spraying belts,
connector cables and electrical equipment.
