140
(64) Bearing housing 15
1) Inspect the housing for cast surface exfoliation
due to oxidation and degradation, dent or crack.
2) Inspect circlip 16 for chipping or crack, and
replace with a new one if defective.
3) Measure the (B) and (F) portions of the bearing
housing shown in the figure below.
Replace with a new one if either wear limit is
exceeded.
Wear limit of bearing housing inside diameter (B)
RHF5
12.42mm
RHB51
12.42mm
RHB31
10.01mm
Wear limit of turbine side seal ring inserting portion
(F)
RHF5
15.05mm
RHB51
15.05mm
RHB31
11.03mm
(65) Seal plate 4
1) Inspect the seal plate for any contact trace, joint
surface defect, dent or crack.
Replace it if defective.
2) Measure the seal ring inserting dimensions (H1 and
H2) on the compressor side, and replace the seal ring
with a new one if either wear limit is exceeded.
Wear limits
RHF5
H1: 12.45mm, H2: 10.05mm
RHB51
H1: 12.45mm, H2: 10.05mm
RHB31
H1: 10.04mm, H2: 8.01mm
(66) Seal rings
Replace seal rings with new ones.
(67) Inspect keep plates 10, 13 and bolts for any
deformation, and replace defective parts with
new ones. Also replace M3 Torx machine
screws with new ones.
