MAN B&W 8.05
Page 3 of 5
MAN Diesel
MAN B&W ME/ME-C/ME-B/-GI engines 198 80 26-6.0
Flushing of lubricating oil components and
piping system at the shipyard
During installation of the lubricating oil system
for the main engine, it is important to minimise or
eliminate foreign particles in the system. This is
done as a final step onboard the vessel by flush-
ing the lubricating oil components and piping
system of the MAN B&W main engine types ME/
ME-C/ME-B/-GI before starting the engine.
At the shipyard, the following main points should
be observed during handling and flushing of the
lubricating oil components and piping system:
• Before and during installation
Components delivered from subsuppliers, such
as pumps, coolers and filters, are expected to
be clean and rust protected. However, these
must be spot-checked before being connected
to the piping system.
All piping must be ‘finished’ in the workshop
before mounting onboard, i.e. all internal welds
must be ground and piping must be acid-treat-
ed followed by neutralisation, cleaned and cor-
rosion protected.
Both ends of all pipes must be closed/sealed
during transport.
Before final installation, carefully check the in-
side of the pipes for rust and other kinds of for-
eign particles.
Never leave a pipe end uncovered during as-
sembly.
• Bunkering and filling the system
Tanks must be cleaned manually and inspected
before filling with oil.
When filling the oil system, MAN Diesel & Turbo
recommends that new oil is bunkered through 6
μm fine filters, or that a purifier system is used.
New oil is normally delivered with a cleanliness
level of XX/23/19 according to ISO 4406 and,
therefore, requires further cleaning to meet our
specification.
• Flushing the piping with engine bypass
When flushing the system, the first step is to by-
pass the main engine oil system. Through tem-
porary piping and/or hosing, the oil is circulated
through the vessel’s system and directly back to
the main engine oil sump tank.
Fig. 8.05.01: Lubricating oil system with temporary hosing/piping for flushing at the shipyard
Purifier
Tank sump
6 µm Filter unit
Cooler
Pumps
Filter unit
Temporary hosing/piping
610 µm
Autofilter
Back flush
178 61 99-7.0
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