Engine Maintenance
105
Draining Water from Fuel Tank
Water run through the system may damage the
fuel injection system components. Damage to the
fuel injection system will subsequently cause
more expensive damage to the engine. A large
accumulation of water in the bottom of the fuel
tank will stop a diesel engine. Water should be
drained off during scheduled maintenance
inspections to prevent breakdowns. Drain the
water off after the fuel tank and unit have
remained idle for an hour.
1. Place a container under the fuel tank to catch
the draining water and fuel.
2. Remove the drain plug from the bottom of the
fuel tank.
NOTE: Some fuel tanks have a check valve in
the drain plug fitting. Push the check valve open
with a small screw driver to drain the tank.
3. Let the water and fuel drain into the container
until no water is visible in the fuel draining
from the tank. If the water and fuel do not
drain freely, the vent may be plugged. If so,
clean or replace the vent.
4. Install the drain plug.
Fuel Filter/Water Separator
The fuel filter/water separator filters the fuel, and
removes water from the fuel and returns it to the
fuel tank.
Fuel Filter/Water Separator
Replacement
Replace the fuel filter/water separator at intervals
according to the Maintenance Inspection
Schedule.
1. Unscrew the filter bowl 1/4 turn and remove it
and the filter element. Drain the fuel from the
filter bowl and dispose of the filter element
properly.
2. Clean the filter bowl and the filter head.
1.
Vent
2.
Fuel Gauge
3.
Drain Plug
Figure 167: Fuel Tank
3
1
2
1.
Filter Head
4.
Filter Element
2.
Bleed Screw
5.
Filter Bowl
3.
Filter Element Tab
Figure 168: Fuel Filter/Water Separator Assembly
ARA1912
4
1
3
5
2
