Inner wheel bearing - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Murfdawg · 07-06-2016, 09:36 PM

I am replacing the front wheel bearings on my 64 c10 with standard drums. I got the
Timken bearings from Rockauto. The spindle is 1.375 and the inner bearing id is 1.372. It won't slide on the spindle. Is this normal? Is the bearing supposed to be a tight fit? My shop manuals don't indicate anything about this.
Help Please? Thanks!
P.S. I did search for this issue but found nothing.

**aerotruk63** · 07-06-2016, 09:46 PM

I can't help you much on the subject accept that the bearing should be a sliding fit.
You impressed the hell out of me when you said you have a shop manual.

Murfdawg · 07-07-2016, 07:33 AM

You confirmed what I thought. A sliding fit. I guess I will try another set of bearings. Thanks!

cg285 · 07-07-2016, 07:46 AM

how did you get your measurements?

**aerotruk63** · 07-07-2016, 08:21 AM

From the GM parts book:
62-66 GM Bearing inner part# 457052 TIMKEN LM48548 - LM 48510
62-66 Bearing Outer part# 457478 TIMKEN LM 11949 - LM11910

cg285 · 07-07-2016, 08:40 AM

if you look at the specs for lm48548 the id is 1.375 which would be correct for a zero fit. i would question how you got the 1.372

jtrichard · 07-07-2016, 11:56 AM

What is the bearing number you have from R.A.?

Murfdawg · 07-07-2016, 01:05 PM

I measured the spindle and the bearing after I tried to mount the fully assembled hub. I removed the seal and measured the bearing and the spindle with a micrometer. The package the bearing came in was labeled Set 5, which is the correct bearing.
I also tried to slide just the bearing onto the spndel. No go.

61K10 · 07-07-2016, 01:10 PM

I take it the old bearing came off easily? ck for any burs or nicks on the spindle. Maybe just a bad new bearing?

cg285 · 07-07-2016, 01:48 PM

Quote:

Originally Posted by Murfdawg

I removed the seal and measured the bearing and the spindle with a micrometer.
I also tried to slide just the bearing onto the spndel. No go.

i rebuild steering knuckles that take a zero fit for the bearing race. almost always the race has to be tapped in. after it is seating then usually it can be turned by hand.
what was your procedure for measuring the id? id's can be tricky

Murfdawg · 07-07-2016, 04:25 PM

Well, this is a little embarrassing. After cleaning my glasses and using a magnifying glass and being very careful, I got 1.375 for the id. The bearing number is LM 48548. So the correct bearing.
I still could not get it on, until I polished the spindle extensively with emery cloth. Now I can get the bearing on sometimes. Sometimes it gets stuck. If I can get it past the taper on the spindle, it has plenty of clearance. I will have to be lucky to get the whole hub assembly on. I will try tomorrow.
Thanks everyone for your help.

07-06-2016, 09:36 PM	#1
Murfdawg Registered User Join Date: Feb 2014 Location: Cranfills Gap Texas Posts: 33	Inner wheel bearing I am replacing the front wheel bearings on my 64 c10 with standard drums. I got the Timken bearings from Rockauto. The spindle is 1.375 and the inner bearing id is 1.372. It won't slide on the spindle. Is this normal? Is the bearing supposed to be a tight fit? My shop manuals don't indicate anything about this. Help Please? Thanks! P.S. I did search for this issue but found nothing.

07-06-2016, 09:46 PM	#2
aerotruk63 Check The Champ, Demonstrator Join Date: Jun 2009 Location: Montreal,Quebec Posts: 6,627	Re: Inner wheel bearing I can't help you much on the subject accept that the bearing should be a sliding fit. You impressed the hell out of me when you said you have a shop manual. __________________ 1963 *Chevrolet Truck* Literature LINK: https://picasaweb.google.com/113840717762774560215 YouTube Channel with 20+ Original *Chevrolet Truck* Salesmen, Mechanics & Service Department Training Slideshows. https://www.youtube.com/results?sear...otruk63&page=1

07-07-2016, 07:33 AM	#3
Murfdawg Registered User Join Date: Feb 2014 Location: Cranfills Gap Texas Posts: 33	Re: Inner wheel bearing You confirmed what I thought. A sliding fit. I guess I will try another set of bearings. Thanks!

07-07-2016, 07:46 AM	#4
cg285 Registered User Join Date: Aug 2013 Location: sumterville, florida Posts: 914	Re: Inner wheel bearing how did you get your measurements?

07-07-2016, 08:21 AM	#5
aerotruk63 Check The Champ, Demonstrator Join Date: Jun 2009 Location: Montreal,Quebec Posts: 6,627	Re: Inner wheel bearing From the GM parts book: 62-66 GM Bearing inner part# 457052 TIMKEN LM48548 - LM 48510 62-66 Bearing Outer part# 457478 TIMKEN LM 11949 - LM11910 __________________ 1963 *Chevrolet Truck* Literature LINK: https://picasaweb.google.com/113840717762774560215 YouTube Channel with 20+ Original *Chevrolet Truck* Salesmen, Mechanics & Service Department Training Slideshows. https://www.youtube.com/results?sear...otruk63&page=1

07-07-2016, 08:40 AM	#6
cg285 Registered User Join Date: Aug 2013 Location: sumterville, florida Posts: 914	Re: Inner wheel bearing if you look at the specs for lm48548 the id is 1.375 which would be correct for a zero fit. i would question how you got the 1.372

07-07-2016, 11:56 AM	#7
jtrichard Registered User Join Date: Jun 2013 Location: joshua tree ca. Posts: 1,484	Re: Inner wheel bearing What is the bearing number you have from R.A.?

07-07-2016, 01:05 PM	#8
Murfdawg Registered User Join Date: Feb 2014 Location: Cranfills Gap Texas Posts: 33	Re: Inner wheel bearing I measured the spindle and the bearing after I tried to mount the fully assembled hub. I removed the seal and measured the bearing and the spindle with a micrometer. The package the bearing came in was labeled Set 5, which is the correct bearing. I also tried to slide just the bearing onto the spndel. No go.

07-07-2016, 01:10 PM	#9
61K10 Registered User Join Date: Feb 2012 Location: pleasant valley--placerville ca Posts: 3,039	Re: Inner wheel bearing I take it the old bearing came off easily? ck for any burs or nicks on the spindle. Maybe just a bad new bearing? __________________ 1961 chevy K10 my build is------------61K10 build

07-07-2016, 04:25 PM	#11
Murfdawg Registered User Join Date: Feb 2014 Location: Cranfills Gap Texas Posts: 33	Re: Inner wheel bearing Well, this is a little embarrassing. After cleaning my glasses and using a magnifying glass and being very careful, I got 1.375 for the id. The bearing number is LM 48548. So the correct bearing. I still could not get it on, until I polished the spindle extensively with emery cloth. Now I can get the bearing on sometimes. Sometimes it gets stuck. If I can get it past the taper on the spindle, it has plenty of clearance. I will have to be lucky to get the whole hub assembly on. I will try tomorrow. Thanks everyone for your help.



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