Volvo D12 - Installation

Group 25 Intake and Exhaust System Service Procedures
2
Remove the bolts holding the charge
air pipe to the mounting bracket. Pull
the charge air pipe off the tur-
bocharger.
3
Remove the air line from the exhaust
pressure governor.
4
Remove the turbocharger oil delivery
and return pipes. Install a protective
plug into the connection for the oil de-
livery pipe on the oil filter bracket.
5
Loosen the clamp between the tur-
bocharger and the shutter housing.
Remove the shutter housing from the
turbocharger.
6
Remove the nuts and lift the tur-
bocharger off.
7
Clean the sealing surfaces of the ex-
haust manifold, shutter housing and
oil-pipe connections.
Installation
W2000739
Fig. 39: Turbocharger assembly
7 Gasket
8 Clamp
9 Air line
10 Oil delivery pipe
11 Oil return pipe
1
Before installing the new turbocharger,
check the engine oil and change the
oil filters, if required. Then, run the en-
gine a few minutes before installing
the new turbocharger. When running
the engine without a turbocharger, be
sure to plug the oil delivery line. As a
precaution to prevent the oil from en-
tering the new turbocharger, a strainer
can be temporarily installed into the oil
entry point. Then run the engine for at
least a half hour.
Note: After this test, remove the
strainer to prevent strainer blockage
that may occur if the oil system is not
properly maintained.
2
Before installing a new turbocharger,
pre-lubricate the bearing system. This
will ensure adequate lubrication of the
turbocharger at start-up. Install a new
gasket and install the new tur-
bocharger.
3
Apply sealant to the shutter housing
sealing surface and install the housing
to the turbocharger. Mate the shutter
housing flange with the heel of the tur-
bocharger. Retighten the clamp.
4
Connect the air line to the exhaust
pressure governor.
5
Install the turbocharger oil delivery
pipe using new seals.
Note: Be sure to remove the delivery
oil plug if used to run the engine with-
out the turbocharger.
6
Install the turbocharger oil return pipe
to the cylinder block using a new seal.
Do not attach the oil return pipe to the
turbocharger at this time.
7
Install the charge air pipe into the tur-
bocharger using new sealing rings.
Attach the charge air pipe.
33