Operation and maintenance manual

SEBU7833-03 73
Maintenance Section
Fuel Tank Water and Sediment - Drain
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Illustration 50
4. Lubricate the sealing ring (4) with clean fuel oil.
5. Install the spin-on filter (2) into the top of the filter
head (1).
6. Tighten the spin-on filter by hand until the sealing
ring contacts the filter head. Rotate the spin-on
filter through 90 degrees.
7. Prime the fuel system. Refer to Operation and
Maintenance Manual, “Fuel System - Prime”.
i02335436
Fuel Tank Water and Sediment
-Drain
NOTICE
Care must be taken to ensure that fluids are contained
during performance of inspection, maintenance, test-
ing, adjusting, and repair of the product. Be prepared
to collect the fluid with suitable containers before
opening any compartment or disassembling any com-
ponent containing fluids.
Dispose of all fluids according to local regulations and
mandates.
Fuel Tank
Fuel quality is critical to the performance and to the
service life of the engine. Water in the fuel can cause
excessive wear to the fuel system.
Water can be int
roduced into the fuel tank when the
fuel tank is being filled.
Condensation
occurs during the heating and cooling
of fuel. The condensation occurs as the fuel passes
through the fuel system and the fuel returns to the
fuel tank. Th
is causes water to accumulate in fuel
tanks. Draining the fuel tank regularly and obtaining
fuel fr om reliable sources can help to eliminate water
in the fuel.
Drain the Wat
er and the Sediment
Fuel tanks should contain some provision for draining
water and dra
ining sediment from the bottom of the
fuel t anks.
Open the drai
n valve on the bottom of the fuel tank
in order to drain the water and the sediment. Close
the drain valve.
Check the fuel daily. Allow five minutes after the
fuel tank has been filled before draining water and
sediment f
rom the fuel tank.
Fill the fuel tank after operating the engine in
order to dr
ive out moist air. This will help prevent
condensation. Do not fill the tank to the top. The
fuel expands as the fuel gets warm. The tank may
overflow .
Some fuel tanks use supply pipes that allow water
and sedime
nt to settle below the end of the fuel
supply pipe. Some fuel tanks use supply lines that
take fuel directly from the bottom of the tank. If
the engin
e is equipped with this system, regular
maintenance of the fuel system filter is important.
Fuel Storage Tanks
Drain the
water and the sediment from the fuel
storage tank at the following intervals:
•
Weekly
•
Service intervals
•
Refill of the tank
This wil
l help prevent water or sediment from being
pumped from the storage tank into the engine fuel
tank.
If a bulk storage tank has been refilled or moved
recently, allow adequate time for the sediment to
settle b
efore filling the engine fuel tank. Internal
baffles in the bulk storage tank will also help trap
sediment. Filtering fuel that is pumped from the
storag
e tank helps to ensure the quality of the fuel.
When possible, water separators should be used.