Komatsu 82E Series User Manual

82E-5 – 98E-5 SERIES 8-13
8. TURBOCHARGER
8.5.2 Inspection procedure
(1) Compressor housing (7)
Inspect the compressor housing for any contact
trace with the compressor impeller, surface
defect, dent or crack at joint surface, and
replace it if defective.
(2) Turbine housing (11)
Inspect any trace of contact with the turbine
wheel, exfoliation due to degradation by oxida-
tion of the cast surface, thermal deformation or
crack.
Replace with a new one of defective.
(3) Compressor impeller (18)
Inspect any contact trace, chipping, corrosion or
deformation.
Replace with a new one if defective.
(4) Turbine shaft (1)
1) Inspect any contact trace, chipping, thermal
discoloration or deformation at the turbine
wheel. Check the shaft portion for bend, the
journal portion for thermal discoloration or
abnormal wear, and the seal ring groove for
surface defect or wear. Replace with a new
one if defective.
2) Measure the turbine shaft journal outside
diameter (A) and seal ring groove width (E).
Replace with a new turbine shaft if beyond
the wear limit.
Wear limit of journal outside diameter (A)
RHB51......7.98 mm
RHB31......6.25 mm
Wear limit of ring groove width (E)
RHB51......1.29 mm
RHB31......1.07 mm
3) Measure the turbine shaft run-out, and
replace with a new turbine shaft if it exceeds
0.011 mm.
(5) Heat insulating plate (20)
Inspect the heat insulating plate for any contact
trace, thermal deformation or corrosion. Replace
with a new one if defective.

Komatsu 82E Series Specifications

General

Brand	Komatsu
Model	82E Series
Category	Engine
Language	English