Re: [ihc] RE: Gas-less Bryan

["Ryan Moore" <baradium@xxxxxxxxxxx>]

----- Original Message ----- 
From: "Jim Grammer" <jgrammer@domain.elided>
To: <ihc@domain.elided>
Sent: Tuesday, July 06, 2004 09:54
Subject: [ihc] RE: Gas-less Bryan


> >Date: Mon, 5 Jul 2004 11:23:13 -0400
> >From: <scout@domain.elided>
> >Subject: [ihc] Mechanical Fuel Pump Installation in IH 304 engine
>
> >I've replaced the mechanical fuel pump in my 1970 800A, but don't believe
> >I've done so correctly.  The engine is not getting any gas, nor is the
fuel
> >bowl filling up with any gas.  All the lines are connected and there is
gas
> >in the tank.
>
> Assuming that gas can get from the tank to the pump(i.e. gas was flowing
> fine before the previous fuel pump died).....
>
> There is little you can screw up on the install. If inserted straight and
> bolted flat to the mounting boss, the fuel pump arm doesn't really have
any
> place to go except up against the eccentric on the camshaft nose. The fuel
> pump is prolly either DOA or(as you suspected) the wrong one. Compare the
> operating arm with your old one if you kept it. You can test the pump a
> couple of ways. Disconnect the line to the carb and stick it in a
container,
> then crank the engine. You should get plenty of gas in the container
fairly
> quickly. Or, with the pump off the engine(in a vise with soft jaws is
> easiest), stroke the operating arm. The pump should make decent suction on
> the inlet and have an obvious output 'puff' of air. It's pretty easy to
spot
> a dead one this way FWIW, it's a positive displacement pump that needs to
be
> able to self-prime.


A bit late, but for the record.

I put a new pump on my scout a while ago.   Anyway, while we were working on
that, my friend Ed was talking about a few times when he's done it.  He said
that one time he somehow accidentally got the arm *above* the lobe or
whatever pushes on the pump.  Said that when he started the engine it
promptly broke the arm off and the pump never pumped fuel.  Was a very
annoying lesson apparently.   I made double sure that it was going under,
whenever I've changed a mechanical pump i've tilted the arm down as I slid
it in and every time I've felt it engage and had to push on it to compress
the arm when bolting it up.

Just FYI and something else to check... although I hope this isn't the case
for you.

-Ryan


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