[AT] Allis Chalmers B Question next step:

[Will Powell]

As far as the brass shims... Gets some plastiguage and put the shims in until you get the proper clearance. Also make sure your bearings don't come past the cap or rod surfaces... On my first C I could not get the clearance right. Previous owner had put in new bearings but it was frozen when I got it. Kept trying to get the clearance right. Plastiguage showed as correct, then the rods would knock... Finaly found that the bearings were going past the rod and cap surfaces and pinching... Filed ends of bearings down, figured out the right amount of shims, and everything has been fine since. 

regards, 

Will 
----- Original Message ----- 
From: Recentjester at aol.com 
To: at at lists.antique-tractor.com 
Sent: Monday, April 4, 2011 10:07:28 PM 
Subject: [AT] Allis Chalmers B Question next step: 

Wellllllll that spark was on. Appreciate all your replies. The fuel was 
their too. But it had no compression on three cylinders. The lifters are 
toast, The cam is tired too. I have a better looking one from a 48 C model Are 
they interchangeible? I took the block in to have it boiled out. When I 
drove out the liners I noticed one had a chunk out of it. There also was a 
corresponding brazed rip on the oil pan. The block looks good,(no cracks) it 
does not have any holes for a generator bracket on it at all. I have 
another B rearend and center piece with a hole in it for a starter. I am half 
tempted to put a ring on the flywheel an install the motor on the other half 
a tractor. But I don't like mixin things all up (other than cams) Is the 
magneto start system reliable I kind of see it like putting electric start on 
a early Harley it just don't seem right. An all the rods an mains had the 
little brass shims. The machine shop had never seen that, he not that old. 
The crank looks rough on journal surface. It will have to be turned down. 
Say it is turned down 0.30 now when I order 30 under bearings why or how do 
I even use those brass shims? I have plenty of parts to clean up an some 
time to listen to any an all suggestions. 
_______________________________________________ 
AT mailing list 
http://www.antique-tractor.com/mailman/listinfo/at