rustystud
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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 don't want to have to much distance from the fuel tank to the injection pump though unless you have really big lines. It's like electricity. You get voltage drop in long distances. In the fuel system you loose pressure and volume. Now all you engineer types don't start getting on my analogy since that isn't "exactly" correct. Really some of you guys would strain out a "Nat" in a 50 gallon barrel of grain. It's close enough. Just like in horse-shoes and hand grenades !Just a quick question.. Great thread, by the way. Is there any reason, regarding the physical location of the filters, that they are where they are? Except for wanting to keep the overall distance to a minimum, could all three be located next to the tank, for example? I have some plans for my Deuce that might dictate another location for them.
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 !Mine is mounted to the bed over the tank (how yours was), I might need to extend the feed line a little bit. My bed flexes away from the frame less than others, has 6 solid mounts and the 2 front springs mounts. I've seen some trucks with as few as 2 solid mounts.
Love how much easier it is to change the first filter in that location.
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.The only filter I would be concerned about moving from its stock location is the final filter. No concerns moving the first or second filter to a easier to access location. If your fuel lines start to deteriorate, you want the final filter as close to the injection pump as possible to provide that last line of protection.
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" system back in the 1970's. It was a reusable stainless steel filter that never needed replacing. So people kept them in and never checked them. The problem was algae blooms would build up and then would destroy the rest of the fuel system.Old thread
I resolved the problems
Have the entire 3 micron easy change filter setup for sale in SS
Never change those three filters again.
see
https://www.steelsoldiers.com/showthread.php?181420-Deuce-M35A2-fuel-filter-system-200
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 through a fine filter like the secondary which is a 5 micron filter. I couldn't find a 2 micron filter for a decent price or I would have used it instead.I wonder if the reason the secondary and final are after the booster pump would be it is easer to push than to pull through the last two.
Myself I would do spin on in the same place as the secondary and final then a water trap / 10 micron filter before the booster in place of the primary. Also seems like going from a 10 micron primary to a 6 micron secondary then a 2 micron final would be a slick trick. Then one filter does not take all the load of dirty fuel / tank crud.
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