[AT] Project Updates '49 A, '51 A, and '47 B

[deanvp at att.net]

Most of the spark problems I have had with a tractor setting for awhile have
always been caused by the points. Take an ohm meter and verify you have zero
and I mean "0" ohms when the points are closed.  Points can develop a "fuzz"
on them while setting unused that is really hard to clean off.
  I would need to do some research but early B's usually had 15" fronts and
right now I don't remember when they switched to 16"   Might be when the
Roll-o-Matic came out??? I would need to do some more research on that.
Early 1947 B's could have 36" rear tires on Flat spoke centers up until Ser
# 183788. Otherwise 38" with pressed steel or cast centers or 42" with cast
centers were the available options. . 

Dean VP
Snohomish, WA 98290

-----Original Message-----
From: AT <at-bounces at lists.antique-tractor.com> On Behalf Of STEVE ALLEN
Sent: Wednesday, May 6, 2020 4:49 PM
To: at at lists.antique-tractor.com
Subject: [AT] Project Updates '49 A, '51 A, and '47 B

Just to keep things moving, I thought I'd share some updates and a question
or two.

'49 A:
After draining the condensation out of the transmission case (none in the
crank case), we tried to start the tractor.  I had it running just fine as
recently as 16 months ago.  Nadda.  No spark.  This tractor is magneto.
Polished the points, checked the wires, puttered with the cap.  Still no
spark.  Haven't had time to get back to it since Saturday.  can't understand
why a unit that had spark just fine less than 2 years ago had nothin' now.

'51 A:  
Starts and runs easy, but it starts dying of fuel starvation after just a
little while.  I know the fuel line runs closer to the exhaust manifold than
it should, but I insulated it.  Gas is till *not* coming down out of the
tank at what seems a normal rate.  I am planning to suspend a light in the
tank to see if I can spot any problem there.  I just don't get the
reluctance to flow.

'47 B:
Pulled the front wheels off to replace the tires while the carb is in the
soak and clean mode.  Got a surprise:  the front wheels are 3" x 15", not
the 4" x 16" I expected (and should be on a late styled B).  Out of
curiosity, I checked the rears:  the tires are 12.4 x 36" (not 38").
apparently, at some point in the distant past (before the mid-'70s when my
Dad bought it), someone put smaller (older??) wheels and tires on this
tractor, or else it came with an option I don't see in the parts manual for
these years.  One source I found lists 3" x 15: front wheels for the M.
VERY odd.  So we are looking for a pair of 15"s now.  Anybody have a
favorite brand?

Anyway, my son is working on cleaning up the carb, and we're waiting till
the weekend when I have some more time.

The "original" Steve Allen
_______________________________________________
AT mailing list
AT at lists.antique-tractor.com
http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com