(800) 853-2651
SHOP NOW

172 main bearing?

R

riveroadrat

Well-known Member
I bought these .001 main bearings marked on the box EAF 6331B .001. When I checked the bearings they are Clevite 77 with MB1501 P marked on them but no .001 marking anywhere on the backside. Does anyone know if that Clevite number is for an .001 bearing? I searched the EAF number on CNH but it only shows the new number. I googled the Clevite number but got nowhere. Someone on here posted that same bearing number and IanC posted to him but no spec on whether it was .001 or not. Any clues?
 
The ultimate test would be to check the bearing wall thickness with a "ball mic" and compare against factory specification (IF those can be found) in the service manual, or in a machine shop's "spec book". Each half would be 0.0005" thicker than standard IF .001" undersized.

Years ago, experienced machinists at shops that had been around for a long time had all sort of data books and charts available. Probably not likely any more some an engine that old.

You could also try calling Mahle/Clevite's Tech Support Line and see if they have any of that old data available to them.

1-800-248-9606
 
Could you not mic the old bearings and compare? Yes there would be wear on the old ones but should be in the ball park if they are not worn out to the copper backing.
 
I have a NAPA/Monmouth bearing book with those bearing thickness specs. The original standard main bearing thickness should measure .0963. This is by measuring with a ball mic.
Gary
 
Also forgot you need to measure the brg in the center not the end, new brgs taper slightly thinner near the ends or near what I call the parting line of the rod.
 
(quoted from post at 23:03:37 02/08/20) Also forgot you need to measure the brg in the center not the end, new brgs taper slightly thinner near the ends or near what I call the parting line of the rod.
Click to expand...

Gary, What a WONDERFUL reply, both with an exact dimension and also backing me up on the use of a "ball mic" to measure the bearing shell thickness.

I hope the O.P. replies and thanks you for that exacting info.

Sadly, it doesn't seem that happens very often here.
 
You must log in or register to reply here.

Similar threads

D
ford 850 rebuild
Replies
12
Views
342
used red MN
U
J
8N rebuild
Replies
3
Views
396
Jeff Jones Tucson
J
T
Yanmar 1500D - 2TR15 - Crankshaft Main bearing sizes
Replies
9
Views
265
bmaverick
bmaverick
R
172 main bearing?
Replies
0
Views
452
riveroadrat
R
K
Oversize Wheel Bearing
Replies
6
Views
549
wp6529
W
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.

Copyright © 1997-2024 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

Back
Top