Mercedes-Benz OM 904-926 LA BlueTec Operating Instructions Manual page 84

Protecting the engine
82
Close off all openings on the engine (e.g.
R
on the charge-air housing, exhaust etc.)
with an oil-soaked rag.
Drain off the coolant completely for
R
engines that have been removed. Unscrew
the coolant drain plug on the engine block
to do so. When screwing in the coolant
drain plug, observe the tightening torque.
Relieve the tension in the poly-V-belt. The
R
poly-V-belt can remain routed.
If the engine has been filled with coolant,
R
the cooling system must first be filled with
water. It must then be filled with a mixture
of water and improver compliant with
Sheet 311.0. Coolant without antifreeze
protection compliant with Sheet 312.0 may
also be used.
Protective treatment for 12 to 36
months
Carry out all measures in "Protective treat-
ment for up to 12 months". The fuel system,
combustion chambers and air compressor
also require protective measures.
Carry out protective measures for the
fuel system
X
Completely fill the fuel tank with diesel fuel.
X
Start the engine and allow it to run for
15-30 minutes at approximately 900 rpm.
Carry out protective measures for the
combustion chambers
Only carry out protection measures for the
combustion chambers when the engine is
cold (coolant temperature under 50 † ).
Only use initial operation oil compliant with
Sheet 225.6 for the protection of the com-
bustion chambers.
X
Detach the charge-air housing from the cyl-
inder heads.
X
Briefly press the start button on the engine.
At the same time, pour approximately
3
15 – 20 cm initial operation oil into each
cylinder.
Protecting the air compressor
Carry out the protection of the air compressor
at the same time as the combustion chamber
protection.
X
On the air intake side of the air compressor,
pour a maximum of 5 cm
tion oil compliant with Sheet 225.6 into the
air compressor.
After protective measures
X
Refit all removed engine parts. Observe the
tightening torques.
! After protective measures are complete,
the engine must not be started again.
Protective treatment for longer than
36 months
When carrying out protective treatment for
over 36 or 18 months, repeat the protection
measures as in "Protective treatment for 12
to 36 months".
X
Drain off engine oil that has been added.
X
The oil filter does not have to be replaced.
Shipping by sea or engine protective
treatment in tropical countries
Carry out all measures in "Protective treat-
ment for 12 to 36 months". The fuel system,
combustion chambers and air compressor
also require protective measures.
3
of initial opera-