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

From: Bobby Joe Pendleton (bjpendleton@charter.net)
Date: Mon Aug 01 2005 - 18:10:30 PDT


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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