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Basically that is what I have. The water trap/filter is the first filter, just like the military had. Then the final two (Primary & Secondary) are after the booster pump again just like the military had. Yes it is easier to push fuel (that is why the military put the pump in the tank) especially...

The problem with that is you can get "algae" build-up in your filters. Especially up here in the Northwest. Regular filter replacement will prevent that. The manufactures can build filters that would never need changing. In fact I personally knew the guy that invented the "overson screen filter"...

That is good advice for the old style rubber fuel lines. That is why I have gone to the stainless steel PTFE hose. Teflon linings will almost never breakdown in this lifetime. The other hoses I use are the DOT nylon hoses. The same durability goes for them too.

I found out the hard way that my bed flexes way more then I thought ! Since I didn't want "huge" sweeping lines coiled up for movement, I decided to mount to the truck frame instead. It still is extremely easy to change out too ! Especially setting on my NAPA mechanics stool ! :naner:

There really is no set rule to where fuel filters are mounted. Mostly it is convenience on the manufacture's part not the mechanics ! If you've seen some of the places they stick the stupid filters you would also say "who was smoking crack when they decided to mount the filter here ? " . You...

I needed to add a couple of one-way check valves to my fuel filter (for my dual fuel tank project) and since I had made a mistake in mounting it to the bed frame (can you say bed flex ! ) I made up a new mounting bracket. It mounts to the frame not the bed . I also made it with a bend to...

Lino, after thinking about it I do believe the fuel tank line is a 3/4" inverted flare to 8AN fitting. I had to buy both a 5/8" and a 3/4" inverted flare for another project.

Glad I could help Jeepsinker.

The lines from the filters to the injection pump are Nylon ( DOT rated air lines ) . The fitting I used from the fuel tank is a special fitting I ordered from "Parker" . It has a 5/8" inverted flare to a 8AN male fitting. The fitting on the injection is also a special adapter. 6AN to 8AN .

Oddshot, their is a dealer on ebay that sell's "Parker" pumps that are exact replacements for our "Olympic" brand pumps. Their only $50.00 each and almost brand new. I bought several.

I thought about mounting it low like yours, but I hate to have diesel fuel run down my arm when you go to change them out.

I looked for a long time to find a dual filter base that would still allow separate filters. The problem was as peashooter found out "the price" .

I love your set-up oddshot ! I think I'll steal your idea for the connector pipe by using the standoffs like you did ! That's the way to think out of the box ! I never did like the way I had to loop the connector hose. What is the length of the standoff bushings ? Where did you end up mounting...

I had at first installed a "Racor" water/fuel filter on my truck with the plastic bottom and drain fitting, but the filters are so expensive that I removed it and put in the "WIX" filters instead. The "WIX" also has a bottom drain, but no clear plastic to see the water. If I had an unlimited...

I think what people get confused about is that in a diesel fuel system the first filter is a water/fuel separator, the second filter is the "primary" filter and the last one is the "secondary" filter. I have to look at the filters as I don't remember off hand, but the water/fuel filter is a 45...

At this time I'm only running straight diesel. The pressures I'm getting are 10psi at the tank and 60psi at 1000RPM at the secondary filter. My pressure only drops 2psi between the secondary and primary filters.

I didn't think about that, but your right especially on a cold day you could have some nasty problems develop .

The finished product ! Now with the gauges on the inlet and outlets of the filters I can tell at a glance weather the fuel pump is working properly and if the filters need changing. According to "Cummins" the fuel difference between the secondary and primary filters should not exceed 5 psi (4.9)...

There is a NPT tap on the block that the fuel line goes into. Just remove it (1/8" NPT) and screw in the gauge. Works great. You might need to install a 45 degree fitting to clear the face of the gauge.