Man D 2866 LUE 605, Repair Manual

Page: 86 / 174

1
2
Measuring the axial / radial clearance or the turbocharger shaft
84
D
Removing the turbocharger, see page 82
D
Mark turbine housing relative to the bearing
housing and remove turbine housing
D
Removing turbine housing
Axial clearance
Fig. 1
Apply dial gauge holder and dial gauge under pre-
load to shaft end face of the turbine wheel as
shown.
Press the rotor shaft against the dial gauge, read
off and note the value. Press the rotor shaft in the
opposite direction, read off and note the value.
The difference between the values obtained is the
axial clearance.
If the play exceeds the permissible value, ex-
change turbocharger.
Radial clearance
The radial clearance is measured only on the tur-
bine side with a dial gauge or feeler gauge.
Fig. 2
Dial gauge
Place the measuring tip of the dial gauge to the
side of the hub, press the turbine wheel to the dial
gauge, read off and note the value.
Press the turbine wheel in the opposite direction,
read off and note the value. The difference bet-
ween the values obtained is the radial clearance.
Measure at several points.
If the play exceeds the permissible value, ex-
change turbocharger.