Lesson 4/Learning Event 1
FIGURE 62. BYPASS FILTER SYSTEM.
Notice that the main oil line divides on the output side of the pump. Part of the oil is directed to the bearings
and other moving parts, while part of the oil is directed through another oil line to the filter. Notice that the
oil leaving the filter returns directly to the sump in the oil pan.
No bypass valve is needed with this type of filter because oil will still be delivered to the moving parts even if
the filter becomes clogged.
At this point, let's study the entire lubrication system on a typical engine.
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