Fuel Tank Water And Sediment - Drain - Perkins 4008-30 Operation And Maintenance Manual

84
Maintenance Section

Fuel Tank Water and Sediment - Drain

Illustration 71
Typical example
2. Loosen the drain plug (1). Allow the fluid to drain
into the container until clean fuel can be seen.
3. Tighten the drain plug (1) to a torque of
1.5 to 2 N·m (13.3 to 17.7 lb in).
Fuel Tank Water and Sediment
- Drain
NOTICE
Care must be taken to ensure that fluids are con-
tained during performance of inspection, mainte-
nance, testing, adjusting and repair of the product.
Be prepared to collect the fluid with suitable contain-
ers before opening any compartment or disassem-
bling any component 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 introduced 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. This causes water to accumulate in fuel
tanks. Draining the fuel tank regularly and obtaining
fuel from reliable sources can help to eliminate water
in the fuel.
Drain the Water and the Sediment
Fuel tanks should contain some provision for draining
water and draining sediment from the bottom of the
fuel tanks.
Open the drain valve on the bottom of the fuel tank in
order to drain the water and the sediment. Close the
drain valve.
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Check the fuel daily. Allow five minutes after the fuel
tank has been filled before draining water and
sediment from the fuel tank.
Fill the fuel tank after operating the engine in order to
drive 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.
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Some fuel tanks use supply pipes that allow water
and sediment 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
engine 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 will help prevent water or sediment from being
pumped from the storage tank into the engine fuel
tank.
SEBU9077-02