Fig. 15 - Typical V-Type Engine Oil Filter
Fig. 14 - Typical In-Line Engine Oil Filter
full-flow filter that removes the larger foreign particles
without restricting the normal flow of oil.
The Series 53 engine lubricating system, illustrated in
Figs. 16 and 17, includes an oil intake screen and tube
The by-pass filter assembly, when used, continually
assembly, an oil pump, a pressure regulator, a full-flow
filters a portion of the lubricating oil that is being bled
oil filter or by-pass filter with by-pass valve, and an oil
off the oil gallery when the engine is running.
cooler with a by-pass valve.
Eventually all of the oil passes through the filter,
filtering out minute foreign particles that may be
Lubricating oil from the pump passes from the lower
front cover through short oil galleries in the cylinder
block. From the block, the oil flows to the full-flow oil
The lubricating oil filter elements should be replaced,
filter, then through the oil cooler (if used) and back
each time the engine oil is changed, as follows:
into the front engine cover and cylinder block oil
galleries for distribution to the various engine
1. Remove the drain plug and drain the oil.
bearings. The drains from the cylinder head(s) and
other engine parts lead back to the oil pan.
2. The filter shell, element and stud may be detached
as an assembly, after removing the center stud from
Oil pressure is regulated by a pressure relief valve
the base. Discard the gasket.
mounted in the engine front cover. Oil cooler and oil
filter by-pass valves prevent the stoppage of oil flow if
3. Clean the filter base.
these items become plugged.
4. Discard the used element, wipe out the filter shell
and install a new element on the center stud.
5. Place a new gasket in the filter base, position the
shell and element assembly on the gasket and tighten
Each engine is equipped with a full-flow type
the center stud carefully to prevent damaging the
lubricating oil filter (Figs. 14 and 15). If additional
gasket or center stud.
filtering is required, a by-pass type oil filter may also
6. Install the drain plug and, after the engine is
started, check for oil leaks.
All of the oil supplied to the engine passes through the