TM 5-3820-245-14&P
7. Replace the element after 10 washings or 1 year of service, whichever comes first, or any time damage is noted.
8. Install the dust unloader and tighten the clamp.
Crankcase Ventilation
Harmful vapors which may form within the engine are removed from the crankcase, gear train and valve compartment by a
continuous, pressurized ventilation system.
A slight pressure is maintained within the engine crankcase by the seepage of a small amount of air from the airbox past
the piston rings. This air sweeps up through the engine and is drawn off through a crankcase breather.
In-line engines are equipped with a breather assembly which is mounted on the rocker cover or the flywheel housing.
The wire mesh pad (element) in the breather assemblies should be cleaned if excessive crankcase pressure is observed.
If it is necessary to clean the element, remove the breather housing from the flywheel housing (In-line engines). Wash the
element in fuel oil and dry it with compressed air. Reinstall the element and the breather assembly.
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