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LUBRICATING OIL FILTERS AND OIL COOLER (Cont'd.)
The outlet line from the filter body is at the bottom
and
drains back
into
the crankcase.
Only a portion of the oil flows through this filter.
This filter
has a re-
placeable element and must be changed every 4th oil change or every 240 hours
of operation.
E.
REMOVAL OF SECONDARY FILTER ELEMENT AND INSTALLATION OF A NEW ONE.
1. Remove the drain plug at the bottom of body and loesen the cever. Let the .oil
drain .outbefore removing the element.
2. Remeve the filter element and discard it.
3. Clean out the filter body and replace drain plug.
4. Install new element, new cover gasket and tighten cever securely.
5. When installing new element one extra quart of oil is required for crankcase
f11l1ng. NOTE: When filling crankcase with 011 fill only to full mark on
crankcase bayonet gauge.
6. Start motor, inspect for leaks and run for a few minutes. Then step motor and
let it set long enough for the oil to drain back inte crankcase. Check crank-
case bayonet gauge te see if more .oilis needed.
7.
In cold weather the motor should be run long enough to attain operating temp-
erature before checking the oil level.
F. OIL COOLER
1.
The lubricating 011 cooler lowers the oil temperature as the 011
travelS
through the small passages inside the cooling element.
If these
passages
become entirely clogged, no cooling of the oil can take place, and the oil is
by-passed without filtering or cooling directly to cylinder block oil galler~
It is absolutely necessary that the oil cooler element be kept clean for pro-
per oil cooling.
2. Cleaning of a clogged cooler is sometimes very difficult.
A cooler that has
become loaded with impurities over a long period of operation can usually be
cleaned only through use of special solvents in conjunction with some type of
circulating system that will create a flushing action. However, in most cases
the use of any of the special solvents, as listed perviously, in a hand oper-
ated force pump will dislodge any accumulation. In the event that such treat-
ment does not eliminate the clogged condition, a new cooler element must be
installed.
NOTE: A clogged 011 cooler or filter is a contributing factor in low engine
oil pressure which may be the cause of one or many operating difficulties.
FUEL SYSTEM
.AN
D FILTERS
Fuel is drawn from the bottom
of the
fuel tank, through the first stage filters,
by the transfer pump. The transfer pump ther.
forces through the second stage filter to the
fuel intake manifold on the side of the engine
The fuel tnen flows under pressure to the in-
jectors. Note that the fuel entering the in-
jectors is filtered through a por.ousbronze
f11ter. The surplus fuel leaves the injector-s
through an.otherperous bronze filter, flews
into the return fuel manifold and back te the
fuel tank through the return fuel line.
The sediment traps on the
fuel tank
sh.ouldbe drained every 10 hours .of.operation
or once daily befere starting engine; prefer-
ably at the beginning .ofthe operating period.
In freezing weather, drain at end of operat-
ing period as water might collect in
traps
and cause damage due t.ofreezing.
Under normal .operatingconditions when using clean fuel, the FIRST STAGE FUEL
FILTERS between sediment trap and transfer pump should .operate witheut clegging fer ap-
preximately 300 to 500 h.ours. The elements in these filters are replaceable.
A dr.opin
fuel pressure may indicate that the filter is clegged. Never ~ttempt te clean the filter
element. If clegging occurs, install new elements and gaskets.
12
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