10.4.6. Periodic Inspection and Maintenance
The turbocharger assembly must be inspected periodically.
10.4.6.1. Revolving State and Inspection Points of Rotor
Inspection on the revolving state of rotor is performed according to abnormal noises. In
case of using an acoustic bar, touch the turbocharger housing with a tip of bar and raise
the engine revolution slowly, Then, in case that high sound is heard by every 2 ~ 3 sec.
continuously, for there should be the possibility to be abnormal metal and rotor, replace or
repair the turbocharger.
10.4.6.2. End play Inspecting Points of Rotor
Disassemble the turbocharger from the engine and should inspect the end plays in axial
and circumference direction. In case of disassembling the turbocharger, the oil inlet and
outlet should necessarily be sealed with a tape.
1) Axial Direction End Play
•
Wear limit : 0.20mm
2) Rotor’s Circumference Direction End Play.
•
Wear limit : 0.65mm
3) In case that the end plays to axial and circumference directions, replace or repair the
turbocharger.
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Magnet vise
Turbine wheel room
Dial gauge
Shift the
turbine shaft to
axial direction
Wear limit : 0.20mm
EFM3004I
Magnet vise
Turbine wheel room
Dial gauge
Shift the
turbine shaft to
axial direction
Wear limit : 0.20mm
EFM3004I
