Yanmar 6LY3 series - Section 9 Turbocharger

6LY3 Service Manual
9-1
© 2007 Yanmar Marine International
6LY3 Service Manual
Section 9
TURBOCHARGER
Page
Safety Precautions .......................................................................... 9-3
Introduction...................................................................................... 9-3
Turbocharger Components and Functions...................................... 9-4
Turbine ...................................................................................... 9-5
Compressor ............................................................................... 9-5
Bearings .................................................................................... 9-5
Seal Structure of the Compressor Housing............................... 9-5
Maintenance Standards .................................................................. 9-6
Standard Limits.......................................................................... 9-6
Torque Chart ............................................................................. 9-8
Turbocharger Periodic Inspections.................................................. 9-9
Inspection Intervals.................................................................... 9-9
Checking the Rotor Rotation ..................................................... 9-9
Checking the Rotor Axial Play................................................. 9-10
Checking the Rotor Radial Play............................................... 9-11
Disassembling the Turbocharger .................................................. 9-12
Special Tools........................................................................... 9-12
Inspecting the Turbocharger Before Disassembling................ 9-14
Disassembling the Turbocharger............................................. 9-14
Inspecting the Turbocharger ......................................................... 9-15
Inspecting Major Items ............................................................ 9-15
Cleaning the Turbocharger...................................................... 9-15
Inspecting the Turbocharger Components .............................. 9-16
Assembling the Turbocharger ....................................................... 9-19
Installing the Floating Bearings ............................................... 9-19
Installing the Turbine Rotor Shaft............................................ 9-20
Installing the Thrust Bearing.................................................... 9-20