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Replacing Tranny "quick Connects" With Barb Fittings?


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Any one here replaced their trannys quick connects with regular barb fittings? I had to do some service on my manche recently and broke one of the  connectors going into the transmission, I had to get her running in a pinch so I grabbed some regular 1/4 NPT to 3/8 barb fittings to get er going, no leaks and everything works great so far, but I read somewhere the actual thread in the AW4's is actually 14x1.5  :dunno: , I'm not too familiar with fittings can any of you guys give some advice on this? the fittings went on by hand without a problem.

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The AW4 quick connector thread is metric, (14mmx1.5) and you screwed 1/4" NPT into it? I guess the threads are close, but it ain't right. Here's a site that shows how to get rid of the quick connectors and adapt them to a -6 AN fitting. When my quick connectors give out I'm going to convert to AN fittings and hose as in this link:

 

http://www.stu-offroad.com/engine/aw-4/aw-4-2.htm

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#$%@# I hope I can still save the threads, I've gotten lucky so far but don't want to risk it  I read in some other forums during my search that other people took the same route that I did and actually used air hose fittings.

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I'm planning on ditching the hardline quick connectors too. I was looking into it after dropping my tranny a few months ago when I broke the stock connectors, and I found out the hard way this week that the new ones I got to replace them started leaking. This is the collection of ebay items I was hoping to use to replace them with -6 braided steel fuel line. This is intended as a "jumping off point", as I haven't made sure all this will work out yet. 

For the connections at the tranny: http://www.ebay.ca/itm/141225855907 A -6AN to 14x1.5 adapter. This will work, the package for the new quick connectors I got had 14x1.5 on them, and that's what every single source I've found has said they are.

For the ends of the steel lines at the tranny: http://www.ebay.ca/itm/121224605911?var=420204814979 90° swivel fitting

The braided steel line itself: http://www.ebay.ca/itm/290957005090 Just some bulk -6AN fuel line. I'm thinking in the neighbourhood of 3 feet for each line, but I haven't gone out and measured yet.

For the line ends at the radiator (still using the "stock" cooler): http://www.ebay.ca/itm/121224605911?var=420204814979 45° swivel fitting. I don't actually know if I need a 45 or what. That's based on what I've read on a few other forums. It might be fine to do with 90° swivels. I haven't looked at it yet.

For the connections at the radiator: http://www.ebay.ca/itm/121153028039 No guarantees this will actually work. I'm running the Spectra Premium rad (CU1193 I think, got it from Rock Auto) and I understand that they used 3/8"NPT for both the connections at the rad, but again, I haven't actually checked.

If you're getting bulk steel braided line, make sure you use the proper tube cutters to get a nice clean cut, or else you risk having the ends leak. Also, if you're using some other kind of cooling solution (i.e. aftermarket standalone tranny cooler) you may have other options for connections at the cooler end of things.

From what I've read, the tranny cooler lines aren't under any particularly huge pressure, so the 1500psi fuel line is grossly overkill, but I couldn't think of any other braided line that would have enough flow. I want the braided steel to prevent tears and punctures when I'm driving somewhere I really should be.

Also, I haven't actually gone to check what exactly I've got for tranny fluid inlet and outlet at the rad, so I could be way off base on the 3/8"NPT. And also I haven't measure what length of line I'd need either, or figured out where I'd route it.

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  • 2 weeks later...

UPDATE

 

I replaced my barb connectors with the appropriate adapters and the transmission threads where perfectly fine, if any one finds themselves in a pinch you can buy 1/4" mnpt fittings at the hardware store with a little teflon tape ( I would suggest using a 1/2" I.D  washer to keep the hex on the fitting from gouging the tranny case) and run some power steering/ tranny fluid hose up to the cooler, hope this can help someone out of a mess.

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