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AB Volvo Penta / Diesel Engine TAMD71B
7.11.4 Checking turbocharger
This check should be left to authorized
service personnel.
However, a cursory check of the turbocharger
may be carried out as follows:
1. Remove the air cleaner (ACL).
Warning! Check that the turbocharg-
er’s compressor wheel is stationary
before checking the shaft.
2. Check whether the rotor shaft is running stiff-
ly or whether the turbine wheel or compres-
sor wheel is catching on its housing. Turn the
rotor, first with a light pressure and then with
the application of a light axial load.
If the rotor is difficult to turn, the turbocharger
must be replaced or reconditioned as soon
as possible.
Note: If the turbocharger unit is to function satis-
factorily, it is vital that the engine’s lubrication
system be maintained according to the mainte-
nance schedule and that the correct type of lu-
bricating oil be used in the engine.
Fig. 7.7 Turbocharger rotor shaft
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