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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 rotating.
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
1. Remove the air cooler.
2. Blow compressed air through the air cooler in the
direction opposite to normal air flow. Max press.
is 0.49 MPa (5kpm) [71 psi].
3. Check cooler for corrosion and cracks.
4. Wash the fresh water tubes in water then remove
scale deposits by inserting an 8 mm bar into each
tube.
5. Replace zinc rods if sea water is used in the coo-
ler.
Checking air cooler drain pipe
Make sure the drain from the air cooler is not clogged.
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