01:01-02
©
Scania CV AB 1997 21
Program 96
Measuring radial clearance and
axial clearance
Measuring radial clearance and axial clearance
does not usually give any indication of the
remaining service life of the turbocharger.
If the turbocharger appears to be functioning
poorly or is making a noise, measuring charge
pressure or measuring radial and axial clearance
may indicate that the turbocharger is defective.
For measuring axial and radial clearance, the tur-
bocharger can be removed and bolted to a steel
plate to which the magnetic dial gauge stand can
also be attached.
Radial clearance
Take readings on both turbine wheel and com-
pressor wheel.
1. Place the point of the dial gauge against the
turbine wheel and compressor wheel.
2. Pull both ends of the shaft up. Take a reading.
3. Press both ends of the shaft down. Take a
reading. The difference between readings is
radial clearance.
4. Repeat measurements three times on each
side.
5. If any wheel rubs against the housing, despite
radial clearance being within tolerance, the
turbocharger should be changed.
Measuring turbine wheel radial clearance.
Measuring compressor wheel radial
clearance
To Next Page
Loading...
Need help?
General
