Re: [MV] Fw: [MV] HELP! Deuce Multifuel Fuel Line Fitting Size/Thread TPI?

From: MV (MV@dc9.tzo.com)
Date: Mon Aug 01 2005 - 20:41:19 PDT


Same thing happened to me also. It was 3/8" Napa fuel hose, after just
a short period it started springing leaks. It was really bad stuff.

Dave

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Bobby Joe Pendleton wrote:
> Did it come from NAPA? I bought fuel hose from NAPA a while back and it is
> crap. After 3 or 4 months it started cracking and leaking all over the
> place. This happed on 3 different vehicles.
>
> BjP
> Southern by the grace of God
> "I...Shall Remain Confederate"
>
> ----- Original Message -----
> From: "Kenny Reed" <kreed@pintoeng.com>
> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> Sent: Monday, 01 August, 2005 20:15
> Subject: [MV] Fw: [MV] HELP! Deuce Multifuel Fuel Line Fitting Size/Thread
> TPI?
>
>
>
>>When put my engine in the deuce about a year and a half ago i had no fuel
>>line problems. after about 3 months i had then popping up all over the
>>place. i think can't remember for sure but i think that i replace my
>
> lines
>
>>with air lines from a truck parts store. i know it would have to be feul
>>and oil resistant and i am pretty sure it was just air line. I will have
>
> to
>
>>check . It was a little expensive but well worth it. i have had no
>>problems since.
>>Kenny Reed
>>1968 M35A2 W/W, Whistler
>>Hopefully Ring Mount and .50 cal soon
>>
>>----- Original Message -----
>>From: "Ken Boge" <ken@clovermachine.com>
>>To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
>>Sent: Monday, August 01, 2005 8:10 PM
>>Subject: Re: [MV] HELP! Deuce Multifuel Fuel Line Fitting Size/Thread TPI?
>>
>>
>>
>>>Ike,
>>>
>>>My deuce has the original fuel lines from 1970 except for one that I
>>>replaced the other day just for the fun of it and I haven't had the type
>>>of
>>>failure you describe.
>>>The thread for a 3/8" compression fitting is 9/16-20 UN.
>>>If you use plastic tubing, don't forget the ferrule inside the end of
>
> the
>
>>>tube to prevent it from collapsing too much. One problem with
>
> compression
>
>>>fittings is over tightening. Tighten just enough to stop it from
>
> leaking.
>
>>>Your best fix might be to replace the plastic line with copper for a
>
> more
>
>>>permanent fix.
>>>I wouldn't try tapping the current fitting for NPT. You'll end up with
>
> a
>
>>>leaky mess. Orchard Supply has a good selection of fittings that you
>>>could
>>>use to change over to barb fittings if you really want to.
>>>I seem to recall that you are located in northern CA. If you need more
>>>help
>>>let me know. I'm in Santa Clara.
>>>
>>>Ken
>>>
>>>
>>>>Hi Everyone...
>>>>
>>>>I'm having repeating trouble with a fuel line on my '71 multifuel
>
> deuce.
>
>>>>I want to replace this stock line either with a commercially-made
>>>>steel-braided hydraulic line, or with simple barb fittings with some
>>>>high-quality fuel hose and double worm gear clamps so that if (when) it
>>>>does fail again in the field, I can at least replace the hose more
>>>>easily than I can with the original compression fittings and line.
>>>>
>>>>Here are my questions:
>>>>
>>>> 1.) What is the darned thread size and threads per inch on these
>>>>fittings? It looks a lot like a 1/2" 20 TPI, but I tried that and it
>
> is
>
>>>>loose in the engine's inlet and outlet connections...it won't tighten.
>>>>I need to know the thread size before I can get the proper fitting,
>>>>otherwise I will have to take off the elbows and tap them to a standard
>>>>tapered NPT thread so I can use standard NPT fittings.
>>>>
>>>> 2.) This must me a common failure on deuces...what have you others
>>>>done to permanently fix the problem?
>>>>
>>>>Thanks for any tips!
>>>>
>>>>--
>>>>Jim 'Ike' Newton
>>>>MILDOCS.COM
>>>>The World's Largest Public ETM Search Site
>>>>www.mildocs.com
>>>>1 (650) 766-6306
>>>
>>>
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>
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>
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>>
>>
>>===Mil-Veh is a member-supported mailing list===
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>
>
>
> ===Mil-Veh is a member-supported mailing list===
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>
>
>



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