Yanmar 6LPA-STP2 Service Manual page 259

Turbocharger
12/05
5. Attach the box spanner wrench (14 mm) to the
shaft end of the turbine shaft (Figure 9-2, (1))
on the turbine side and remove the shaft end
nut (Figure 9-2, (7)). NOTICE: Pay attention to
the loosening direction as the shaft and nut
have left-handed threads.
6. Remove the compressor impeller
(Figure 9-2, (8)).
7. Loosen the M8 TORX T screw bolt
(Figure 9-2, (54)) securing the seal plate, using
a torque wrench (TT40).
8. Remove the seal plate (Figure 9-2, (11)).
Note: Lightly tap the bearing housing side of
the seal plate with a wood or plastic
hammer.
Note: Liquid gasket is applied to the seal plate
and bearing wheel mounting surfaces.
9. Remove the oil thrower (Figure 9-2, (3)) from
the seal plate.
10. Remove the M8 TORX T screw bolt
(Figure 9-2, (44)) using a torque wrench
(TT40).
11. Remove the turbine housing (Figure 9-2, (41)).
12. Carefully secure the heat insulation plate
(Figure 9-2, (42)) by hand and pull off turbine
shaft (Figure 9-2, (1)).
Note: If the turbine shaft is tight, lightly tap the
shaft end on the blower side with a wood
or plastic hammer.
6LPA Service Manual
13. Remove the heat insulation plate
(Figure 9-2, (42)).
14. Loosen the M4 TORX T screw bolt
(Figure 9-2, (53)) securing the thrust bearing,
using a screwdriver (TT20).
15. Remove the thrust bearing (Figure 9-2, (22))
and thrust brushing (Figure 9-2, (2)) using a
copper bar.
16. Remove the floating bearing (Figure 9-2, (21))
on the compressor side from the bearing
housing (Figure 9-2, (51)).
17. Remove the retaining ring (Figure 9-2, (52)) on
the turbine side from bearing housing
(Figure 9-2, (51)), using retaining ring pliers.
18. Remove the floating bearing (Figure 9-2, (21))
on the turbine side from the bearing housing
(Figure 9-2, (51)).
19. Remove the far-side retaining rings
(Figure 9-2, (52)) of the turbine and
compressor sides from the bearing housing
(Figure 9-2, (51)), using retaining ring pliers.
20. Remove the seal ring (Figure 9-2, (6)) on the
turbine side from the turbine shaft
(Figure 9-2, (1)).
21. Remove the seal ring (Figure 9-2, (4)) on the
compressor side from oil thrower
(Figure 9-2, (3)).
© 2007 Yanmar Marine International
TURBOCHARGER
9-13