CAV Filters

Roachie,
Whitworth's have CAV filters on special for $58 for a complete unit, did you replace yours with a complete unit or does it mix/match??
Wondering whether it would be worth to save the cost of filters for the current set-up, what do you do with the hand pump on top of the genuine unit, the catalogue one doesn't have a hand pump fitted?
Rolande

Roachie,yeah I didnt reacon I'd need two filters but the unit is one assemblie and I dont want to cut it in half.I could always machine up a sleeve on the lathe to act as a dummy filter if it came down to it.
And rolande,the hand pump hasnt worked on our 4 Runner for a couple of years,all I do is fill the new filter up with diesel and spin it on ,No Worries.

Rolande,
I got one of those machined conversion adaptors from that well known mob in the southern highlands south of Sydney that we're not allowed to mention on this forum. It simply spins onto the bottom of the standard hand-pump fitting (I think they used lock-tite cos I couldn't get it off when I tried). The CAV fits onto the bottom of that. There is no electrical connection on the bottom (as there is on the original Nissan filter) to warn by idiot light of the presence of water. The only
"problem" (& it's no big deal, really) is that it's difficult to get the old CAV filter off with the pump head in place. So, what I do is remove the 2 hoses and the 2 bolts that hold the assembly on to the bracket and take the whole bloody lot to my work bench where I change the filter in a ice-cream container to minimise the loss of diesel into my engine bay etc.

Nick, I'd give it a go first with the 2 filters both in place and see if there is any obvious drop off in power which might be a sign the pump is having trouble getting the fuel through. If you do have trouble, maybe you could get around it by simply pulling the guts out of a filter to let fuel flow through freely, rather than go to the effort of machining up a blank.

Good luck with it; you'll be pleased with the saving on filters. I usually buy 10 at a time for about $60- all up.

Cheers,

Roachie

Thanks for info guys, will be able to look at seriously now
Rolande

That sounds like a good idea,bowl on one and filter on the other.Anyway now got a couple of options to try,thanks guys.

Peter,
That's a great idea about putting a second filter on if the glass bowl breaks. I'll have to check it out next time I do a filter change......although I'm thinking the filter is about 60mm high whereas the bowl is only around 25mm, so my stem probably isn't going to be long enough.
Cheers,
Roachie

Ah forgot about the fact that there are two sized glass bowls, there is the small one like you have and one that is the same height as a filter element. Which of course means there are three different stem lengths as well, filter only, filter plus small bowl, filter plus large bowl or 2nd filter element.
As a matter of interest there are two filter filter elements for a CAV, the normal blue one which is 5 micron and a finer one which is green.
If your vehicle has a mechanical lift pump you can loosen the plastic drain plug while the engine is running and drain any crap out of the bottom of the bowl. Note though that the crap will only be in the bowl if you reverse the hose connections as per my earlier post. If the CAV is plumbed as per the arrows on the top the crap ends up in the filter.