PureFlow AirDog®
AirDog® II-5G DF-165
2011-2016 6.7L Powerstroke
Section 11
Initial Startup Procedure
22
INITIAL START PROCEDURE
11-1. The AirDog
®
II is a self-priming system, however, to prevent possible damage to the
system, it is recommended to fill the water separator with diesel fuel before initial
startup.
11-2. Rub diesel fuel or oil on the filter seals before installing to ensure a proper seal.
11-3. Turn the starter key to the on/run position.
11-4. While the AirDog
®
II is operating, bleed the fuel line to the engine of air by loosening
the fuel line connection at the engine fitting. As soon as the line is purged of air and
pure fuel is observed, properly tighten the fuel fitting.
NOTE: put a rag or shop towel
over and around fitting to prevent splatter. Catch all spilled fuel and dispose of
properly. Wear safety glasses.
11-5. Start engine.
RECHECK ALL FUEL FITTINGS FOR LEAKAGE AND PROPERLY TORQUE. BE SURE ALL FUEL
LINES ARE PROPERLY ROUTED TO PROTECT FROM EXCESSIVE HEAT AND SECURED TO
PROTECT FROM CHAFFING AND ABRASION. RECHECK ALL ELECTRICAL LINES, SECURE AS
NECESSARY.
CHECKING FOR EXCESSIVE PUMP NOISE
NOTE: Each AirDog
®
II has been manufactured in a Quality Controlled process and wet tested
for operation and performance before shipment. This is a smooth running system. With fuel
or air alone, the AirDog
®
II fuel pump will run quietly. However, if any fuel fitting on the
vacuum side, between the fuel tank and the AirDog
®
II or the pre-filter has been left loose
during the installation process, the system may be sucking air at an excessive rate and will be
very noisy. Excessive restriction in the suction line from the fuel tank can cause vapor and
noise, as well. To check for these problems, unscrew the pre-filter 3 or 4 full turns and activate
the AirDog
®
II by turning the ignition switch to on If the AirDog
®
II runs quietly, then excessive
air from a loose fitting or leaking pre-filter seal or vapor from fuel flow restriction is most
likely the reason for the excessive noise. Correct as necessary.
A.
The seal groove in the 3” filter is a snug fit and on occasion the seal has been found to
not be fully seated. Remove the pre-filter, remove the seal from the top of the nut
plate. Clean and lubricate the seal grove. Carefully replace the seal in the grove. Be
sure to fully seat the seal.
B.
Check all fittings, especially the quick connect at the tank.
