F U L L F L O W F I LT E R W I T H
F U L L F L O W F I LT E R W I T H
I N T E R N A L B Y- PA S S
E X T E R N A L B Y- PA S S
BY-PASS VALVE
TO PARTS REQUIRING LUBRICATION
BY-PASS VALVE
FROM OIL
TO PARTS
PUMP
REQUIRING
LUBRICATION
FROM OIL PUMP
ASf05015
Figure 5-15.--Full flow filters.
TO PARTS REQUIRING LUBRICATION
through the housing. As the oil passes through the
regulator, it is either cooled or heated, depending on
the temperature of the water in the cooling system.
From the regulator, the oil enters the oil passages that
lead to the engine parts.
Some support equipment engines use an oil cooler
that consists of a radiator through which air is
circulated by movement of the vehicle and the cooling
FROM PUMP
fan. This radiator, through which oil passes to and
from the oil pan through the engine passages, acts only
to cool the oil.
TO CRANKCASE
ASf05016
Figure 5-16.--Partial flow filter.
pulling the rod out from its normal place in the
crankcase, wiping it clean, replacing it, and again
removing and noting the height of the oil on the lower
WATER
or marked end. This should be done with the engine
stopped unless the manufacturer recommends
otherwise. It is very important that the oil level not
drop below the LOW mark or rise above the FULL
mark.
Oil Temperature Regulator
The oil temperature regulator, found mostly in
diesel engine lubricating systems, prevents the
temperature of the oil from rising too high in hot
OIL
weather. The regulator unit (fig. 5-17), which makes
ASfO5017
use of the water in the cooling system, is made up of a
WATER
core and a housing. The core, through which the oil
circulates, is exposed to the water that circulates
Figure 5-17.--Oil temperature regulator (cooler).
5-19
