TURBOCHARGER
Inspecting the Turbocharger
9-18
6LY3 Service Manual
© 2007 Yanmar Marine International
Bearing Housing
1. Check the bearing housing for any separation,
nicks or cracks. If any damage is found, replace
the bearing housing.
Figure 9-10
Figure 9-10
1 – Floating Bearing Base “B”
2 – Bearing Housing
3 – Floating Bearing Inside Diameter
4 – Compressor Side
5 – Turbine Side
6 – Turbine-Side Seal Ring Hole
2. Check the retaining ring for any breakage or
cracks. If any defect is found, replace the
retaining ring.
3. Measure the inside diameter of the floating
bearing
(Figure 9-10, (3))
and the turbine-side
seal ring hole
(Figure 9-10, (6))
. If they are
found greater than the specified limits, replace
the bearing housing and / or the floating
bearing.
Seal Plate
1. Check the seal plate
(Figure 9-11, (1))
for any
evidence of interference, nicks or cracks. If any
damage is found, replace the seal plate.
Figure 9-11
Figure 9-11
1 – Seal Plate
2 – Seal Ring Hole
3 – Seal Ring Hole
2. Measure the seal ring hole
(Figure 9-11, (2)
and
(3))
. If it is greater than
the specified limit, replace the seal plate.
(5)
(4)
(
3
)
(6)
(1)
(2)
0005901
Bearing Housing
Floating Bearing Base
Inside Diameter
Limit: 17.11 mm (0.673 in.)
Turbine-Side
Seal Ring Hole
Limit: 18.55 mm (0.730 in.)
Seal Ring Hole
Limit: 14.05 mm (0.553 in.)
(1)
(
3
)
(2)
0006249
