Yanmar 4LHA-HTP Operation Manual page 494

Chapter 4 Intake and Exhaust System
4. Turbocharger
(6) T h r u s t b u s h i n g ® , oil thrower ®
a n d t h r u s t b e a r i n g @
Check each part for wear, surface defect and dis-
coloration. Replace with a new one if defective even
if dimensions G and K are within the wear limit.
1) Thrust bushing ©
Measure the seal ring groove width (K) of the
thrust busing. Replace with a new one if the
measured value exceeds the wear limit.
Wear limit: 4.48 mm
2) Oil thrower (3)
Measure the seal ring groove width (G).
Replace with a new one if the measured value
exceeds the wear limit.
Wear limit: 1.52 mm
3) Thrust bearing@
Measure the thrust bearing width (J). Replace
with a new one if the measured value exceeds
the wear limit.
Wear limit: 4.28 mm
(7) Floating bearing(2i)
1) Check the floating bearing for abnormal wear,
discoloration or surface defect.
new one if defective.
Measure inside diameter
2)
diameter (D) of the bearing.
If it exceeds the wear limit, replace.
Wear limit
Outside diameter:
Inside diameter:
Replace with a
(C) and outside
15.98 mm
11.46 mm
4-17
Thrust bushing
[Urt
IT
K
(Measuring dimensions ot thrust bushing)
4LHA Serie.
Oil thrower