SERVICING THE AIR CLEANER (Ref.
Fig.
57)
After every 60 hours of operation check the oil level in
the air cleaner oil sump. Wait at least 15 minutes after
the engine has been shut off before performing this
check, so as to allow the oil to drain back into the sump.
If the impurities and sediments in the bottom of the
sump exceeds a thickness of 3/8" (9.5mm), wash the
sump and then refill
it
with fresh oil.
If working in extremely dusty conditions, the air cleaner
should be checked every 1 0 hours
or
at least daily.
After every 120 hours of operation, remove the oil and
the filter assembly from the air cleaner. Wash each part
thoroughly in a cleaning solution. Prior to the re-
assembly, check the center tube and clean it also if
necessary, and moisten the filter with new oil. Refill the
oil sump before installing it.
After every 250 hours of operation, the air cleaner
should be completely cleaned. Remove the oil sump,
remove the air cleaner completely (from the tractor)
and break the air cleaner down into its components.
Soak each part in cleaning solvent for at least 30
minutes, and check to insure that each component
is
clean. Drain and let dry. Prior to re-assembly and
reinstallation. Moisten the cleaner element with new
oil, and refill the sump.
Fig. 57 •
Air
Cleaner
1. Oil Sump; 2. Notch for Oil Level
PRIMARY
FUEL
FILTER (Ref. Fig. 58)
After every 60 hours of operation, loosen the lower
screw in the primary fuel filter 3 or
4 turns. Stroke the
fuel lift pump hand lever ( Ref. Fig. 61, item 6) until the
water and sediment in the bowl are pumped out.
Tighten the lower screw again.
35
After 250 hours of operation, the fuel filter should be
changed.
Close the shut off valve under the fuel tank. Clean the
outside of the filter
to
prevent dirt from entering the fuel
system. Unscrew the center retaining bolts on top of
the filter and remove the element. Clean the filter
housing and bowl, and be sure that no old gasket
material remains. Install the new filter element and
gaskets, securing the assembly with the center bolt.
Open the fuel shut off valve and bleed the fuel system.
Be care not to over tighten the bolts.
Fig. 58 •
Primary
Fuel
Filter
SECONDARY
FUEL
FILTER (Ref. Fig. 59)
Every year the secondary fuel filter element should be
changed. This should
be
done at the same time as the
primary filter change is done. Shorten,
if
necessary, the
change interval on either filter so that they can be
changed together whenever the secondary fuel filter is
due to be changed. Use the same procedure as for
changing the primary filter.
NOTE: make certain that you try
to
keep the change
interval close when it is time to changed the secondary
fuel filter. Even it you've just changed the primary filter
recently, it must be done again along with the second-
ary fuel filter each time it is changed. This will prevent
extra dirt and sludge from getting
to
the secondary fuel
filter to quickly because
of
an already dirty primary fuel
filter.
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