Doosan D20S-5 Operation & Maintenance Manual page 155

4TNE98 Diesel Engine Only 4TNE98 Diesel Engine Only
NEVER NEVER wait wait
maintenance if the fuel filter indicator comes on. maintenance if the fuel filter indicator comes on.
The fuel filter / water separator contains a sensor to The fuel filter / water
detect the amount of water and contaminants. This detect the amount of water and contaminants. This
sensor sends a signal to an indicator to alert the sensor sends a signal to an indicator to alert the
operator. operator.
Drain the fuel filter / water separator as follows: Drain the fuel filter / water separa
1. 1. Position an approved container under the fuel Position an approved container under the fuel
filter / water separator (Figure 5-1, (1)) filter / water separator
collect the contaminants. collect the c
2. 2. Loosen the drain cock Loosen the drain cock (Figure 5-1, (2))
bottom of the fuel filter / water separator. Drain bottom of the fuel filter / water separator. Drain
any water collect any water
3. 3. Hand tighten the drain cock. Hand tighten the drain cock.
4. 4. Be sure to prime the diesel fuel system when Be sure to prime the diesel fuel system when
you are done. See Priming the Fuel System. you are done. See Priming the Fuel System.
until until the the scheduled scheduled
separator contains a sensor to
tor as follows:
(Figure 5-1, (1)) to to
ontaminants.
(Figure 5-1, (2)) at the
collected inside. ed inside.
Fig ure 5- Fig ure 5-1 1
-152- -152-
Test Fuel System for Leaks(LP and Dual Fuel Test Fuel System for Leaks(LP and Dual Fuel
Engines Only) Engines Only)
periodic periodic
1. 1. Obtain a leak check squirt bottle or pump spray Obtain a leak check squirt bottle or pump spray
bottle. bottle.
2. 2. Fill the bottle with an approved leak check Fill the bottle with an approved leak check
at the
solution. solution.
3. 3. Spray a generous amount of the solution on the Spray a generous amount of the solution on the
fuel system fuel lines and connections, starting fuel system fuel lines and connections, starting
at the storage container. at the storage container.
4. 4. Wait Wait approximately approximately
perform a visual inspection of the fuel system. perform a visual inspection of the fuel system.
Leaks will cause the solution to bubble. Leaks will cause the solution to bubble.
5. 5. Repair any leaks before Repair any leaks before continuing.
6. 6. Crank the engine through several revolutions. Crank the engine through several revolutions.
This will energize the fuel lock-off and This will energize the fuel lock-off and allow fuel
to flow to the pressure regulator/converter. to flow to the pressure regulator/converter.
Apply additional leak check solution to the Apply additional leak check solution to the
regulator/converter regulator/converter
housing. Repeat leak inspection as listed housing. Repeat leak inspection as listed
above. above.
7. 7. Repair any fuel Repair any fuel leaks before continuing.
Prior to any service or maintenance activity, Prior to any service or maintenance activity,
Test Fuel System for Leaks. Test Fuel System for Leaks.
Maintenance Section Maintenance Section
Check Check
Points Points
15-60 15-60 seconds seconds
continuing.
allow fuel
fuel fuel connections connections
leaks before continuing.
WARNING WARNING
then then
and and