Initial start procedure, Checking pump noise, Pureflow airdog airdog – PureFlow AirDog DF-165 - Dodge Cummins 1998.5-2004 User Manual

Page 17

PureFlow AirDog

AirDog

II Dodge 1998 ½ - 2004

Section 7 Initial Startup Procedures

INITIAL START PROCEDURE

The AirDog

II is a self priming system, however, to prevent potential damage to the system, it is

recommended to fill the pre-filter with diesel fuel before initial startup.

7-1.

Fill the water separator with diesel fuel.

7-2.

Turn the starter key to the on/run position.

NOTE: It may be necessary to momentarily engage the starter in order for the ECM to
energize the AirDog

II.

7-3.

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.

7-4.

Start engine!

RECHECK ALL FUEL FITTINGS FOR LEAKAGE AND PROPER 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 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 very quiet and smooth running system.
However, if any fuel fitting on the vacuum side, between the fuel tank and the AirDog

II or the

water separator, has been left loose during the installation process, the system may suck air at an
excessive rate and will be very noisy. Additionally, should the suction line be pinched or
restricted, cavitation can cause vapor to form. Vapor passing through the gerotor will also cause
loud noise.

To check for this problem, unscrew the water separator 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, leaking pre-filter seal or vapor caused by restriction and a high vacuum is
most likely the reason for the excessive noise. Correct as necessary.

Check all fittings, especially the quick connect at the tank.

For the AirDog®II gerotor pump to operate quietly, the maximum vacuum level

allowable at the fuel inlet port should be no greater than 12” hg.

This manual is related to the following products:

DF-100 DF-100 W/ In-Tank Pump - Dodge Cummins 1998.5-2004