Doosan DX60R Shop Manual page 254

Drain the fuel filter / water separator whenever there are
contaminants, such as water, collected in the bottom of the cup.
Never wait until the scheduled periodic maintenance if
contaminants are discovered.
The cup of the separator is made from semi°žtransparent
material. In the cup is a red colored float ring. The float ring will
rise to the surface of the water to show how much needs to be
drained. Also, some optional fuel filter / water separators are
equipped with a sensor to detect the amount of contaminants.
This sensor sends a signal to an indicator to alert the operator.
Drain the fuel filter / water separator as follows:
1. Position an approved container under the fuel filter / water
separator (1, Figure 86) to collect the contaminants.
2. Close (2, Figure 86) the fuel cock (3, Figure 86).
3. Loosen the drain cock (4, Figure 86) at the bottom of the
fuel filter / water separator. Drain any water collected
inside.
4. Hand-tighten the drain cock.
If the fuel filter / water separator is positioned higher
than the fuel level in the fuel tank, water may not drip
out when the fuel filter / water separator drain cock is
opened. If this happens, turn the air vent screw on the
top of the fuel filter / water separator 2-3 turns
counterclockwise.
Be sure to tighten the air vent screw after the water
has drained out.
5. Open the fuel cock (3, Figure 86).
6. Be sure to prime the diesel fuel system when you are
finished. Priming the Fuel System on page 4-12.
7. Check for leaks.
Engine
Page 74
CAUTION
Figure 86
SP001693