Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Attention Forum Users: On the 28th of December 2023 at 9:00am Central Time, we will be taking the forums down for maintenance while we prepare the new forums for your use. Please click here for more information.

Allis Chalmers Discussion Forum
:

C engine knock

Welcome Guest, Log in or Register
Author 
catfish-65

06-11-2007 15:44:57




Report to Moderator

I have a c that has been taken out of mothballs and I am going to mow with. It ran fine for an hour and then it developed a knock in the motor. I dropped the oil pan and looked for something obvious. There was no chunks of anything in the pan, the only thing strange to me was, I could move the crankshaft forward and back about 1/8" is there a thrust bearing out, or an adjustment. Could this be my noise or is there something they are famous for? Please let me know, Thanks!

[Log in to Reply]   [No Email]
Dick L

06-11-2007 19:15:22




Report to Moderator
 Re: C engine knock in reply to catfish-65, 06-11-2007 15:44:57  
Specs on your crankshafts end play would be .001 to .005. Pretty good bet the thrust bearing part of the main bearing is chewed up. Probly the crankshaft is wore to where new bearings will not take it up. The thrust bearing on that engine is one half of the front main bearing. A main bearing set gives you five inserts and the thrust bearing half that fits over the front main bearing cap.



[Log in to Reply]  [No Email]
catfish-65

06-12-2007 05:59:22




Report to Moderator
 Re: C engine knock in reply to Dick L , 06-11-2007 19:15:22  
That is exactly the info I needed Dick, do you think I could get by with just installing the bearings without getting the crank polished or would that be stupid. Do you have a good source for bearings? Thank You for your help!



[Log in to Reply]  [No Email]
Dick L

06-12-2007 08:33:59




Report to Moderator
 Re: C engine knock in reply to catfish-65, 06-12-2007 05:59:22  
There is no way any one could think what could be or should be done. The only way is with a mic. The crankshaft will need to be measured. Guessing that kind of stuff costs time and money. With that kind of end play in most cases the crankshaft would need to be ground and bearings matched to the grind. It is a good deal to have the shop that grinds the crankshaft to match the bearings. Using the word polish in crankshaft sets up the thought that it might be able to be done on a work bench. Not so. It needs to be done completely on a machine.

[Log in to Reply]  [No Email]
El Toro

06-11-2007 16:44:03




Report to Moderator
 Re: C engine knock in reply to catfish-65, 06-11-2007 15:44:57  
You may want to take a look at the bearings while the pan is off. Hal



[Log in to Reply]  [No Email]
TxAllisMan

06-13-2007 14:03:05




Report to Moderator
 Re: C engine knock in reply to El Toro, 06-11-2007 16:44:03  
Endplay is determined by the thrust bearing and thrust contact on the crankshaft.

If your crank has excess thrust wear it can be fixed but it may be cheaper to find a good crank ready to install.

When you do put it back togther make sure to check the block for wear in the crank journal area wher the thrust bearing sets and make sure that the crank journals are shimmed correctly.



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
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 ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

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.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy