SDLG WP6, Service Manual

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Service Manual for WP6 Diesel Engine
75
364 Disassembly, Inspection, Maintenance and Assembly of Turbocharger
System
3641 Exploded View of Turbocharger System
Turbocharger
Stud
Gasket
Lock nut
Fig. 3-42 Exploded view of turbocharger
3642 Steps to Disassemble Turbocharger System
Disassembling steps are contrary to assembling ones.
3643 Inspection and Maintenance of Turbocharger System
(1) Check service behavior of rotor
Stir compressor impeller gently with your finger, it is normal if the impeller can rotate for more
than one round; if the impeller stopped soon, then it means the bearing is abnormally worn, or there
is clash or jamming problem between rotating parts and fixed parts, you must find out the cause and
eliminate the problem.
(2) Rotor axial movement checking
Press measuring head of dial indicator against compressor end, push and pull the shaft axially and
record value difference of the indicator. As shown in Fig. 3-43. Required range is 0.088~0.118mm,
if exceeds this range, then it indicates that thrust bearing plate or thrust plate and bearing is worn,
you must find out the cause and eliminate the problem.