1
2
3
Checking axial and radial play of turbocharger rotor shaft
75
D Remove turbocharger, see page 73
Fig. 1
Mark turbine housing relative to the bearing hous-
ing and remove turbine housing.
Axial play
Fig. 2
Remove turbocharger. Mark turbine housing rela-
tive to the bearing housing and remove turbine
housing.
Apply dial gauge holder and dial gauge under pre-
load to shaft end face of the turbine wheel as
shown.
Press rotor shaft against dial gauge. Read and
note down value. Push rotor in opposite direction.
Read and note down value.
The difference between the two is the axial play.
Change turbocharger if axial play is exceeded.
Radial play
Fig. 3
Radial play is measured only on turbine end with
dial gauge or feeler gauge.
Apply dial gauge tip to side of hub. Push turbine
wheel towards dial gauge. Read and note down
value.
Push turbine wheel in opposite direction. Read and
note down value. The difference between the val-
ues is the radial play.
Place turbine housing in position, observe mark-
ings and screw on turbine housing.
3507
3742
3743
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