So I ordered a few of these filter units to have on hand for projects like this since they were stupid-cheap (calling in it was $30 each with filters). The flip side now is there's no documentation anywhere to be found on them, including the USA distributor, who says the identical item was once sold as an OEM CAV filter unit...but CAV has long since given it up, and there's no trace of tech docs. They shrug their shoulders and say that the tractor guys must just drop them in place and make the same connections as they had before, and go on their way. In my case, I'm custom-installing, so I wanted info to verify the flow paths within.
In a nutshell: were these designed for some reason to filter in parallel, not series?
I'd assumed they were engineered to run as two filters in series when I saw the online front view, but on close examination once I had them in hand, it's clear they are NOT - the passages and the arrows on the four ports show that
1) the filters are plumbed in parallel, and
2) the ports are labeled as if intended for TWO inlets and TWO outlets (ports numbered 1-4, two in-arrows, two out-arrows.)
Photos illustrate:
Even with the addition of an external crossover hose to join one outlet with the opposite side's inlet, the outlet/clean fuel would still be /shared/ (it flows through one long passage that joins both filters) so it still wouldn't operate as a "series" setup.
Any Ford tractor owners out there recognize these? Some reason they'd drop in to a Ford tractor and all of this would make sense? Wouldn't it be best to have the two filters work in series instead?
Notice there's only one glass bowl, and that's the only drainable fitting, too. I'm thinking I want to be able to drain both sides, whether parallel or series, so I will probably add a drain to the aluminum-bowl side, too. Especially if they were left as is (run in parallel) there seems to be no reason the aluminum-bowl side wouldn't pick up as much coalesced water as the glass side would.
Anyone got more insight into the design intent of this configuration?
Thanks - Dave
In a nutshell: were these designed for some reason to filter in parallel, not series?
I'd assumed they were engineered to run as two filters in series when I saw the online front view, but on close examination once I had them in hand, it's clear they are NOT - the passages and the arrows on the four ports show that
1) the filters are plumbed in parallel, and
2) the ports are labeled as if intended for TWO inlets and TWO outlets (ports numbered 1-4, two in-arrows, two out-arrows.)
Photos illustrate:
Even with the addition of an external crossover hose to join one outlet with the opposite side's inlet, the outlet/clean fuel would still be /shared/ (it flows through one long passage that joins both filters) so it still wouldn't operate as a "series" setup.
Any Ford tractor owners out there recognize these? Some reason they'd drop in to a Ford tractor and all of this would make sense? Wouldn't it be best to have the two filters work in series instead?
Notice there's only one glass bowl, and that's the only drainable fitting, too. I'm thinking I want to be able to drain both sides, whether parallel or series, so I will probably add a drain to the aluminum-bowl side, too. Especially if they were left as is (run in parallel) there seems to be no reason the aluminum-bowl side wouldn't pick up as much coalesced water as the glass side would.
Anyone got more insight into the design intent of this configuration?
Thanks - Dave
"CAV style" Ford tractor double-wide filter units...what?
0 commentaires:
Enregistrer un commentaire