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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Jan 2021 Posts: 33 'Bolter | | 'Bolter Joined: Jan 2021 Posts: 33 | Got a BCA bearing from Rock auto. Box and bearing say it is NB614037 and 614037. The one pictured on the right has a lobe in the outer groove, which says NB1697C on the top of the picture. This is what I got and just like the picture the edge of the bearing says 614037. The other two, along with the old one that came out of the truck, do not have a lobe. Also the groove on the inside is not nearly as deep on the new bearing as the old one and seemingly on the other two pictured. Anyone have some info on this? [img] https://www.stovebolt.com/ubbthread...oad/Number/40090/filename/2022-02-28.png[/img] Thanks | | | | | Joined: Feb 2004 Posts: 29,791 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,791 | That "lobe" is to keep the bearing mount from spinning in the throwout fork. It has probably been eliminated as a cost cutting measure. Unless the bearing gets rough, there won't be much movement with or without the anti-rotation feature. Put a little high temperature wheel bearing grease in the groove to make the carrier slide freely on the bearing retainer, but don't overdo it.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Jan 2021 Posts: 33 'Bolter | | 'Bolter Joined: Jan 2021 Posts: 33 | Thanks for that Jerry. Do you have any insight on the inner groove? The old bearing, CT22, has a deeper groove. The one with the lobe has a slight groove. I saw in the book to grease the inner groove. I know I'm not building a space ship, but my curiosity has me peaked.
Thanks, | | | | | Joined: Feb 2004 Posts: 29,791 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,791 | You'll probably find that the bearing carrier isn't as thick on the new one, necessitating a shallower groove to keep from cutting it in half. Today's parts are like a bunch of baby chickens- - - -"CHEEP- - - -CHEEP- - - -CHEEP!"
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Jan 2021 Posts: 33 'Bolter | | 'Bolter Joined: Jan 2021 Posts: 33 | Thanks! LOL The barnyard reference hits the nail.... | | |
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