[AT] Cockshutt report

[Dean VP]

Ralph:

A quick test might be to disconnect the fuel line to the carburetor and use
an air hose to blow back up the line to the fuel tank. This won't
permanently solve anything but if the tractor runs longer the next time then
you know you have something clogging the fuel lines. If no change then the
problem has to be in the carburetor or the ignition system. Is it possible
the float is adjusted too low not allowing enough reserve in the bowl? Is it
possible that the needle orifice is partially blocked with a spec of dirt?
Does the carburetor inlet have a screen filter on the inlet fitting, between
the fitting and the carburetor? Is the float or needle sticking after being
held in the closed position for a period of time? 

If the points are continuing to provide spark in a consistent manner then it
has to be the fuel system. You may have been mislead by the first fuel flow
test and only observed the bowl draining and not the actual fuel flow from
the tank. A simple test would be to just disconnect the fuel line from the
carburetor inlet and see what the flow actually is. If it isn't, work your
way back. If it is consistently good then the carb is the problem.

Dean A. Van Peursem
Snohomish, WA 98290

I'm a walking storeroom of facts..... I've just lost the key to the
storeroom door 


www.deerelegacy.com

http://members.cox.net/classicweb/email.htm



-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Ralph Goff
Sent: Sunday, January 16, 2005 3:21 PM
To: Antique tractor email discussion group
Subject: [AT] Cockshutt report

The wind finally let up on the weekend so even though it was still -20 by
day it still felt relatively comfortable working outside. I fired up the 50
yesterday to run a few bales through the hammer mill and it worked great. No
sign of any damage from its running short of oil in the valve train for who
knows how long. I'm doing a coolant flush on it now. Seems to be a lot of
sludge in the block on this tractor.
The 40 was not quite so successful. I changed the suspect coil to see if it
would cure the cutting out problem under load. I'd have to say it made no
difference at all. Tractor still started up good but would not keep running
without choke until I adjusted the load needle on the carb again. After a
long warm up I tried some snow blowing. It ran good for about 5 minutes and
then began cutting out every time I got the snow blower running full. Choke
helped but too much would cut the rpm while not enough just let the engine
die. A couple of times I was too slow on the chke button and the engine did
die. Heres where it gets interesting. After the engine re-starts it will
work good for a few minutes until it seemingly runs short of fuel again and
I have to go through the same choking procedure.
I managed to get the driveway cleared and re-parked the tractor in the shed
in hopes of trying a different carburetor. I did find the spare Zenith
carburetor but I'll have to take it apart to check it out for missing parts
or other problems.

Ralph in Sask.
http://lgoff.sasktelwebsite.net/


_______________________________________________
AT mailing list
http://www.antique-tractor.com/mailman/listinfo/at