Preservation
Short term preservation
A3.09.01.00
M20-M601C
en / 24.06.1996 BA000118 2/3
Ĺ
2.2 Lubricating oil system
• Cleaning the lubricating oil duplex filters, see A5.05.08.04.01.nn.
Note:
The lubricating oil remains in the circuit if the values required for engine operation
are in order (see A4.05.08.nn).
Recommendation: Pump fresh lubricating oil through the engine circuit, until clean
oil drips out of the last small end bearing.
• If the engine is separated from the plant, remove lubricating oil. Then firmly seal each
connection with blind flange or stop plug.
2.3 Cooling water system
• Cool the engine down to 30 °C and drain the cooling water.
Note:
The cooling water tracts are protected by the corrosion inhibiter in the cooling water,
see A4.05.09.02.
• Engines with caged exhaust valves: fill the water spaces of the cages with glycol if there is
a danger of frost, see 1.5.
2.4 Crancase, running gear, cam shaft, roller tappets for valves, injection pumps, charge air
manifold
• Spray the parts with preserving oil (see 1.2) and make sure that all areas of the crankshaft,
cam shaft, connecting rods and gears are coated.
• Open the charge air manifold and spray the interior with preservation oil (see 1.2) and
reclose.
2.5 Upper valve rockers
• Slacken and remove rocker gear cover.
• Spray the parts fitted in the cylinder heads with preservation oil (see 1.2).
• Clean the seating of the rocker gear cover.
• Fit and tighten the rocker gear cover.
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