[AT] Case VAH won't run; carb issues /followup post

[charliehill]

I agree with Cecil on this but with one word of caution.
If you use an inline filter make sure it is one designed for a gravity flow 
fuel system or is sized large enough to let a sufficient flow through it. 
Some inline filters are designed to be used with a fuel pump and won't flow 
well enough in a gravity flow system.

To follow up on the trash issue.  Years ago I carefully and dissassembled 
and cleaned the carb on one of my Allis tractors.  I was sure it was 
spotless inside.  I put it back together and it would spit and sputter 
unless the choke was pulled.  My neighbor at the time is an ace mechanic. 
He heard it run and told me it had trash in the carb.  I told him what I'd 
done to it.  He shook his head and said, there's still some trash or water 
in there somewhere.  I took it back apart, flushed it again with carb 
cleaner, blew it out with air and never found a thing in it.  I put it back 
together and it ran like a top.  It doesn't take much of anything down in 
that jet to cause problems.

Charlie


----- Original Message ----- 
From: "Cecil Bearden" <crbearden at copper.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Monday, August 31, 2009 6:48 AM
Subject: Re: [AT] Case VAH won't run; carb issues /followup post


I have removed the main jet screw and let the fuel run out to check the
amount that runs.  If it seems small, then you may have a bit of trash
under the needle seat,  or some "lacquer" in the fuel line, and those
screens above the sediment bowl are notorious for rusting and plugging
up.  I remove them and install an inline filter.  On one that has been
setting for a long long time, an inline filter, and a supply at hand,
then use some premium unleaded gas, it will remove all the gunk from the
tank.  It will deposit in the filters, the need or the supply of them.

Cecil in OKla

CEE VILL wrote:
> I, for one, am proud of you. Dean.  I never did understand the folks who 
> think an outside rebuild, or an inferior after market kit is necessary for 
> the carb at the first sign of a misfire.
>
> Charlie V.
>
>> From: dean at vinsonfarm.net
>> To: at at lists.antique-tractor.com
>> Date: Sun, 30 Aug 2009 23:20:55 -0400
>> Subject: Re: [AT] Case VAH won't run; carb issues /followup post
>>
>>> From: dean at vinsonfarm.net
>>> To: at at lists.antique-tractor.com
>>> Date: Tue, 23 Jun 2009 23:24:58 -0400
>>> Subject: [AT] Case VAH won't run; carb issues
>>>
>>> I was up at my dad's farm last weekend and continued tinkering with the
>>> old VAH.
>> Okay, it's been two months since I was last up at the farm, but this past
>> weekend I finally got the old Case running again.  As some of you had
>> suggested it would be, working on the carburetor was pretty 
>> straightforward.
>> I took it off, carefully took it apart to the extent that I could with
>> simple tools, wire-brushed some greenish scaly gunk out of the fuel bowl,
>> and gave everything a general cleaning and inspection.  Blew compressed 
>> air
>> through all the open passages, put all the original parts back together, 
>> put
>> it back on the tractor, and it fired up at the first touch of the starter
>> button.  Still needs some tinkering to get the adjustment right since it
>> needs full choke to run smoothly, more than seems right, but I didn't 
>> have
>> more time to work on it.  Dad is happy to be able to move the tractor 
>> around
>> now, and I'm happy it's not so much an obstacle for him anymore.
>>
>> Next trip I'll need to bring up a new sediment bowl... the one that's on
>> there is fine but the valve leaks when closed.  And I should change the 
>> oil.
>> And work on that broken stop on the left front end that lets the wheel 
>> turn
>> too much perpendicular to the direction of travel.  And find a parts 
>> tractor
>> with a good PTO shaft.  And put in a new clutch...
>>
>> Dean Vinson
>> Dayton, Ohio
>> www.vinsonfarm.net
>>
>>
>>
>>
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