TC-12 TURBOCHARGER SYSTEM - Turbocharger
12. REMOVE TURBINE OUTLET ELBOW
Remove the four nuts, turbine outlet elbow and gasket.
INSPECTION OF TURBOCHARGER
1. INSPECT IMPELLER WHEEL ROTATION
Grasp the edge of the turbine wheel and turn it. Check that
the impeller wheel turns smoothly.
If the impeller wheel does not turn or if it turns with a drag,
replace the turbocharger assembly.
2. INSPECT AXIAL PLAY OF IMPELLER WHEEL
Insert a dial indicator into the exhaust side, hold the tur-
bine wheel edge by hand and check the axial play.
Axial play: 0.13 mm (0.0051 in.) or less
If the axial play is not as specified, replace the turbocharger
assembly.
3. INSPECT RADIAL PLAY OF TURBINE SHAFT
(a) From the oil outlet hole, insert the dial indicator
through the hole in the spacer bearing and set it in the
center of the turbine shaft.
(b) Moving the turbine shaft in a radial direction, measure
the radial play of the shaft.
Radial play: 0.18 mm (0.0071 in.) or less
If the radial play is not as specified, replace the turbo-
charger assembly.
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