Installation manual

PureFlow AirDog

AirDog® 100 & 150 Dodge Cummins 1994 - 1998

Section 5-A Fuel to Engine

NOTE: It is not necessary or recommended to keep the factory filter canister in the system, the

additional flow restriction of the factory filter could cause excessive pressure drops.

Section 5-B: P-7100 Injector Pump and Injector Bleed Line Return

NOTE: Fuel is returned from the P-7100 fuel pump and also from the injector bleed line(s).

The original 12 Valve Cummins configuration returns the fuel from the P-7100 injector pump

(Ref. Fig 18) directly to the fuel tank (Ref. Fig. 29) while the injector bleed line is routed to the

inlet port of the fuel filter head (Ref. Fig. 20) 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 19 Figure 20 Figure 21

Return line from the End of steel line from P-7100 Injector Bleed Line

‘P’ Pump. that connects to the tank return line.

5B-1. Disconnect the injector bleed line (Ref. Fig. 21) by removing the 8 mm banjo bolt. Be

careful to not misplace the O’ring washer that seals the banjo fitting.

5B-2. Disconnect and remove the banjo fitting

and metal fuel line connecting the fuel pump to

filter head the.

5B-3. Remove the fuel filter head.

Figure 22

5B-4. Connect the injector bleed line banjo fitting (Ref. Fig. 22) with 8mm banjo bolt to

the Return “T” Push Lock Coupler.

Figure 23 Figure 25

Figure 24