PureFlow AirDog FP-150 - Dodge Cummins 1989-1993 - Manual (Page 10)

10
AirDog® 100 & 150 Dodge Cummins 1989 - 1993
Section 5-B Engine Fuel Return to Tank
VE Injector Pump and Injector Bleed Line Return to Tank!
NOTE: Fuel is returned from the VE fuel pump and also from the injector bleed line(s).
The original 12 Valve Cummins fuel system returns the fuel from the VE injector pump
directly to the fuel tank while the injector bleed line is routed to the inlet port of the filter head
to be recycled back to the engine. When installing the AirDog®, it is best to route the fuel
from the injector bleed line back to the fuel tank as well.
Figure 15 Figure 16
Return line from the Injector Bleed Line
‘VE’ Pump. that connects to the tank return line.
5B-1. Disconnect the VE pump return line (Ref. Fig. 15) to the filter head .
5B-2. Disconnect and remove the 8 mm banjo fitting
and metal fuel line connecting the fuel
pump to the filter head.
Figure 17
5B-3. Remove the fuel filter head.
5B-4. Connect the injector bleed line banjo fitting with 8mm banjo bolt to the Return “T”
Push Lock Coupler.
Figure 18 Figure 20
Figure 19
5B-5. Connect the ‘VE’ pump metal return line to the return “T” push lock coupler fitting
with the flex fuel line.
Figure 21 Figure 22