PureFlow AirDog Dodge In-Tank Modification Kit - Manual (Page 9)

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Step 6. Install the washer on the bulkhead fitting first then tighten the Nyloc nut.
Figure 7 Figure 8
Step 7. When tightening the lock nut on the bulkhead
fitting be careful not to damage or break the fuel
module.
Figure 9
NOTE: When modifying the fuel module, be sure to make a ¼” opening in the
original suction line for the return fuel to escape into the basket. The original
suction tube usually has a check valve to prevent loss of prime.
DO NOT sever the line completely. It also supports the top portion of the fuel
module.