First thing we ever did in the tire shop I used to work at when something came in with a vibration problem was to check the inside of the wheels for mud buildup.
If that's ok, assuming the tires are ok and properly balanced, then your thoughts of a u-joint or as mentioned the carrier bearing are the next(and most likely) places to look. A miss in the engine that only shows up under load could possibly feel that way too. Try holding the brakes with it in gear and giving it gas(powerstalling the engine) and see if anything shows up there under load).
Turning the converter on the flywheel should not have any effect on balance, and in fact some of 'em will only go on one way.
You might also look at the pulleys on the front of the engine as it's idling to make sure none are bent or possibly the bottom pulley or fan/waterpump pulley did not get fully seated when they put it back together.
One final thought, if somebody else did the work, is that possibly they could ruined the balancer when the pulled it off and stuck one off a 400 back on there in it's place, although this would most likely be much more noticeable than what you're talking about.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
