Air Inlet And Exhaust Systems; Turbocharger Inspection; Cleaning The Air Cooler; Check Air Cooler Drain Pipe - Volvo Penta D25A MS Operator's Manual

Maintenance: Air Inlet and Exhaust system

Air Inlet and Exhaust Systems

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Turbocharger Inspection

WARNING! Check the turbocharger only when
the engine is cool and the compressor wheel is
not running.
Check shaft play, take a hold of the compressor
wheel nut and turn the wheel to feel rattle and listen
for abnormal noise. Replace the bearings if the
wheel is noisy or rattles.
NOTE! Also check the turbocharger when the ex-
haust color is abnormal.

Cleaning the Air Cooler

Remove the air cooler, and blow compressed air in
the direction opposite to normal air flow.

Check air cooler drain pipe

Make sure the drain from the air cooler is not clog-
ged.