Yanmar 4BY2, Руководство по обслуживанию, Страница: 192 / 248

TURBOCHARGER
Repair
9-6
BY Service Manual
© 2009 Yanmar Marine International
REPAIR
Remove Turbocharger
NOTICE: Observe strict cleanliness procedures at
all times when working on the turbocharger. Never
leave connections for oil inlets or outlets
unprotected. Foreign bodies in the bearing housing
will lead to turbocharger breakdown.
NOTICE: NEVER change the length of the
wastegate control rod without doing it in
coordination with a charge pressure test. (See
Measure Charge Pressure on page 9-5.) Doing so
will cause incorrect boost pressure resulting in poor
performance or engine damage, and can void all
warranty.
1. Remove air filter (Figure 9-2, (5)).
Figure 9-2
Figure 9-2
2. Disconnect wastegate control rod
(Figure 9-2, (1)).
3. Remove the insulating cover (Figure 9-2, (2)).
4. Disconnect the lubrication supply line
(Figure 9-2, (3)) and return line
(Figure 9-2, (4)) from the turbocharger.
5. Loosen and remove turbocharger-to-exhaust
mixing elbow clamps and pull elbow away from
turbocharger.
6. Disconnect charge air pipe (Figure 9-3, (1))
from turbocharger.
Figure 9-3
Figure 9-3
7. Remove four bolts (Figure 9-3, (2)) and remove
turbocharger from exhaust manifold.
8. Remove gasket (Figure 9-3, (3)).
Install Turbocharger
NOTICE: NEVER change the length of the
wastegate control rod without doing it in
coordination with a charge pressure test. (See
Measure Charge Pressure on page 9-5.) Doing so
will cause incorrect boost pressure resulting in poor
performance or engine damage, and can void all
warranty.
Note: When installing the turbocharger, replace
all gaskets with new ones. Change the
engine oil and replace the engine oil
filter. See Change Engine Oil and
Replace Engine Oil Filter Element on
page 8-9.
1. Clean mounting surfaces of all gasket material.
0006652
(2)
(4)
(1)
(
3
)
(5)
000652 3
( 3 )
(2)
(1)