Yanmar 4LHA-DTP - Page 494

Chapter 4 Intake and Exhaust System
4. Turbocharger
4LHA Serie.
(6) Thrust bushing ®, oil thrower ®
and thrust bearing@
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
Thrust bushing
[Urt
K
IT
Oil thrower
(Measuring dimensions ot thrust bushing)
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. Replace with a
new one if defective.
2)
Measure inside diameter (C) and outside
diameter (D) of the bearing.
If it exceeds the wear limit, replace.
Wear limit
Outside diameter: 15.98 mm
Inside diameter: 11.46 mm
4-17