Posted by used red MN on August 04, 2023 at 11:57:50 from (68.46.31.28):
In Reply to: ford 850 rebuild posted by dreid52 on August 04, 2023 at 09:46:43:
I have a Motors brand manual from the early 70s for heavy duty trucks in the back. In the back I t has these farm tractor spec pages as you can see in the picture it shows a varying allows clearance of 0.0004 - 0.002 in. so what you are showing us should be well within that spec. It does not show a 850 but the line above my fingers shows an 801, 901 which has the same 172 engine as is shown by the 3.90 inch bore shown in the first column. The old mechanic that showed me how to overhaul engines told me to use this little trick as a final check. When you get the rod torqued take a small hammer and tap on it on the outside of where the bolt goes through, kind of at an angle. Small taps like youre trying to smash grains of salt on a steel plate. While youre doing this, hold the rod between your thumb and forefinger and feel for movement sideways and watch as well. Tap it from both directions, should move back and forth by the amount of side clearance it has. If you get this sideways movement the rod is loose enough to run just fine.
Editing to add: If the hammer test does not show movement then there should be concern and measures taken to investigate the problem before the final assembly is complete and ready to move on with installation of the pan etc.
This post was edited by used red MN on 08/04/2023 at 10:06 pm.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 - Tractor Profile: Farmall M - by Staff. H so that mountable implements were interchaneable. The Farmall M was most popular with large-acreage row-crop farmers. It was powered by either a high-compression gas engine or a distillate version with lower compression. Options included the Lift-All hydraulic system, a belt pulley, PTO, rubber tires, starter, lights and a swinging drawbar. It could be ordered in the high-crop, wide-front or tricycle configurations. The high-crop version was called a Model MV.
... [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.