Air Inlet And Exhaust Systems; Changing Air Filter; Cleaning The Compressor; Checking Drain Hole Of Charge Air Cooler - Volvo Penta D7A T Operator's Manual

Air inlet and exhaust systems

Maintenance: Air Inlet and Exhaust system

Changing air filter

Replace the air filter when the red field in the service
indicator is fully visible when the engine is stopped.
1. Undo the hose clamp below the air filter cartridge
and pull off the cartridge.
2. Replace the air filter cartridge and tighten the hose
clamp.
3. Press the button on the service indicator to reset
the signal after service. The indicator is now ready
to operate again.

Cleaning the compressor

When using mineral oil as lubricant, soot must be
removed from the compressor and the compressor
housing.
1. Loosen the ventilation pipe (1) from the air intake
(2) and remove the air filter together with the air
intake.
2. Loosen the compressor housing (3) and remove it
carefully.
3. Clean the housing and compressor wheel from
soot using a sharp knife.
NOTE! Be very careful not to damage anything.
4. Install the compressor house and tighten the
screws equally.
5. Check that the compressor wheel can turn easily;
if not, the housing is not in its right position.
6. Reinstall the air filter together and the air intake.
7. Fit the ventilation pipe to the air intake.
Checking drain hole of charge air
cooler
Condensation can form in the charge air cooler during
operation. The condensation should be drained th-
rough the plug (1) on the bottom of the charge air coo-
ler (If necessary refit the plug with a new seal). Make
sure the drain is not blocked.
IMPORTANT ! If considerable amounts of water
run out of the drain hole, the insert must be
removed and test pressurized. This must be
done by an authorized workshop.
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