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taminate the fuel, dog the fllters and eventually
damage the fuel pump and iniectors.
A portable storage tank provides the best method
for storing fuel on the job. In a tank, the sediment
and water can easily be drained and the fuel can
be pumped into the tractor fuel tank with a mini·
mum of handling.
Consult your local Allis·
Chalmers dealer for details about this type of
storage tank. Since condensation will occur in the
tank, it is very important that a sediment sump be
provided in the bottom of the storage tank where
the water and settlings can be drained daily.
Fuel should be allowed to settle at least 4B hours
in the storage container before it is put in the fuel
tank of the tractor. It is advisable to use a pump
and draw the fuel from the tank or barrel rather
than from the bottom of the container by means
of a faucet or through the bung hole.
Where conditions are such that drums must be
used to supply fuel, it is advisable to have enough
drums to allow sufficient time for the fuel to settle.
The fuel should be used only to within about three
inches from the bottom. The fuel thus left in a
number of drums can be collected into one drum
and used after the usual time allowed for settling.
In this manner, the sediment and foreign matter
will be disposed of and no fuel will be wasted.
Whenever drums are used for storage, they should
be covered or placed under shelter to avoid the
fuel becoming contaminated by water which will
enter through the flller plugs when it rains, even
though the plugs are tight.
The fuel tank of the tractor should be fllled at the
end of the day's run rather than in the morning.
This will reduce the water content, as a full tank
is less subject to condensation. The fuel tank is
provided with a drain elbow and drain cock.
Sediment will settle into this elbow and can be
drained.
6. TRACTOR AND ENGINE SERIAL NUMBERS
9
On all parts orders and in all correspondence
relative to the tractor, it is necessary that both
tractor and engine serial numbers be given. This
will properly identify the particular tractor and
will insure obtaining the correct replacement parts
for it.
Prior to engine Serial Number 2·71·111 BO, the
engine serial number is stamped on a plate at-
tached to the left side of the cylinder block below
the governor control housing. On engines Serial
Number 2·71·11180 to 2·71-15635 the number is
stamped directly in the cylinder block in the same
relative location.
Effective on engines after
2-71-15635 the engine serial numbering system
was changed. In the new system of numbering,
the preflx numbers 2-71 were changed to read
2A-l, 2A-2, etc., and are stamped in the cylinder
block.
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