PureFlow AirDog FP-150 - Dodge Cummins 1998.5-2004 - Manual (Page 23)

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PureFlow AirDog
AirDog® 100 & 150 Dodge Cummins 1998.5 - 2004
Section 8 Fuel Filter & Pre-filter Cont’d
The Water Separator
Replace the water separator every other time you change the Fuel Filter or if it becomes
damaged or plugged. It is suggested to check/drain the water separator every three months or
as needed should you experience excessive ‘water in fuel’ conditions. When installing the
water separator, be sure to clean the underside of the AirDog® base. Follow the instructions
printed on the water separator for proper tightening procedures.
CAUTION: Be extremely careful to prevent any contaminates or debris from entering the
pre-filter when removing it for cleaning! Large debris will jam the Gerotor and cause the fuse
to blow. This is not a warranty item. Should this happen, you can easily put the system back
into working order. See the instructions on “How to clean the Gerotor” for proper
procedures
.
The Fuel Filter
Remove the fuel filter by turning it counter clockwise. Do Not pre-fill the fuel filter with
fuel. The AirDog® will fill the filter and prime the system automatically. Follow the
instructions on the filter for proper tightening procedures.
CAUTION: Dispose of waste fuel and used filters properly to protect OUR environment!
Section 9 Pressure Regulator Upgrade
Changing the Regulator Spring
The AirDog® is shipped from the factory with the fuel pressure preset.
For the1998.5-2004 Dodge Cummins the AirDog® fuel outlet pressure is preset at 15 PSI
(±2). However, for some applications, you may desire to increase the pressure output from
your AirDog®. To do this, you will need to install a higher tension spring.
Regulator Spring Replacement Procedure
The regulator spring and ball assembly is located inside the Return to
Tank fuel port.
Step-1. Disconnect the ‘Return to Tank’ fuel line.
Figure 55