Fuel System Cleaning
Cleaning Water From the Fuel System
3. |
Inspect the fuel tank and the
fuel sender for rust, fungi or bacteria. If there is rust, replace
the rusted components. |
4. |
Clean the inside of the fuel
tank and the fuel sender with hot water. |
5. |
Use compressed air in order to
dry the fuel tank and the fuel sender. |
6. |
Disconnect the ends of the
following lines: |
|
• |
The fuel filter inlet line
(both ends) |
|
• |
The fuel filter outlet line
(both ends) |
|
• |
The fuel return line (both
ends) |
7. |
Inspect each of the pipes and
lines. |
8. |
Clean the inside of the fuel
filter housing. |
9. |
Dry the fuel filter housing
with compressed air. |
10. |
Dry the inside of each line
with low pressure air. |
13. |
Add clean diesel fuel to the
primary tank until the tank is 1/4 full. |
14. |
Reconnect the following
lines: |
|
• |
The fuel filter inlet
line |
|
• |
The fuel filter outlet
line |
|
• |
The transfer pump pressure and
suction (both ends) lines |
|
• |
The fuel return line (tank
end) |
15. |
Connect the fuel filter drain
to a line that flows into a clean metal container. |
16. |
Connect the batteries.
|
17. |
Operate the fuel system hand
primer at the fuel filter until clean fuel flows from the fuel
filter drain into a metal container. |
18. |
Install a hose on the fuel
return line , and insert other end into a 7.6 liters (2 gallon)
metal container. |
19. |
Crank the engine for 30 second
time intervals, with 1 minute cool-down periods. Continue until 3.8
liters (1 gallon) of fuel has passed into the container.
|
20. |
Connect the fuel return
line. |
21. |
Start and run the
engine. |
23. |
Clean any fuel spillage from
the engine. |
24. |
Fill the fuel tank and add a
biocide, if needed. |
Cleaning Fuel From the Fuel System
2. |
Fill the fuel tank to 1/4
full. |
3. |
Unplug the crankshaft position
(CKP) sensor. |
4. |
Disconnect the fuel return
line near the cylinder head. |
5. |
Install a hose on the fuel
return line, and insert the other end into a 7.6 liters (2 gallon)
metal container. |
6. |
Crank the engine for 15 second
time intervals, with 1 minute cool-down periods. Continue until 3.8
liters (1 gallon) of fuel has passed into the container.
|
7. |
Reconnect the fuel return
line. |
8. |
Plug in the CKP sensor.
|
9. |
Attempt to start and run the
engine for 15 minutes. If the engine does not start, turn on/off
ignition ten times, that the fuel pump module convey fuel to the
fuel injection pump. |
11. |
Clean any fuel spillage from
the engine. |
12. |
Clear the engine of any
diagnostic trouble codes (DTCs). |
Fuel Tank Cleaning
Note:
• |
Only use oil free
compressed air to blow out the fuel pipes. |
• |
Inspect the fuel
tank internally and clean the fuel tank if you find a plugged fuel
filter. |
5. |
Inspect the fuel pump
strainer. Replace a contaminated strainer and inspect the fuel
pump. |
6. |
Inspect the fuel pump inlet
for dirt and debris. Replace the fuel pump if you find dirt or
debris in the fuel pump inlet. |
7. |
Locate a stand or fixture
suitable to support the weight of the fuel tank and water.
|
8. |
Turn the in-frame rail fuel
tank over so that the modular reservoir assembly opening is facing
down. |
9. |
Install side mounted fuel
tanks upright and horizontal on stand of fixture and remove the
drain plug and set aside for re-installation. |
|
Note:
• |
When flushing the
fuel tank, handle the fuel and water mixture as a hazardous
material. Handle the fuel and water mixture in accordance with all
applicable local, state, and federal laws and regulations.
|
• |
Do not drill any
access or drain holes in the fuel tank. |
|
10. |
Using a high pressure water
spray-wand, spray all interior surfaces with clean/non-contaminated
water. Be sure to spray all interior tank surfaces including for
and aft sections of tank behind baffles, while allowing water to
drain out the modular reservoir assembly opening or drain hole.
Perform each wash cycle for a minimum of 30 seconds using a minimum
of 4 liters (1 gallon) of clean/non-contaminated water.
|
11. |
Using a high pressure wand,
dry all interior tank surfaces. Tank should be tipped accordingly
to facilitate removal of water. Assure pressurized air does not
contain any contaminants. |
12. |
Repeat steps 10 and 11 for a
total of 3 wash/dry cycles. |
13. |
Hand dry tank surfaces with a
white towel to confirm dryness and cleanliness. |
|
Use a non-metallic extension to push the towel beyond tank
baffles. |
|