Group 25 Intake and Exhaust System Design and Function
Crankcase Ventilation
D12C
The D12C has new crankcase ventilation with its outlet
from the upper timing gear cover.
The timing gear cover is designed with an oil trap to pre-
vent oil from escaping through the ventilation tube.
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Fig. 14: Crankcase Ventilation, D12C
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Fig. 15: Crankcase Ventilation, D12B and D12C
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Fig. 16: Crankcase Ventilation, D12A
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