 replacing brake rotors, do I need to replace bearings as well? |
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| VaccaRabite |
 Feb 1 2008, 11:48 PM
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En Garde!  Group: Admin Posts: 13,446 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region  |
As the title says. I am going to replace my brake rotors, as they are worn. Do I need to replace my wheel bearings as well? Is there a simple test to see if they are good to go as they are?
Zach |
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Replies(1 - 7)
| SirAndy |
Feb 1 2008, 11:57 PM
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Resident German Group: Admin Posts: 41,651 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(Vacca Rabite @ Feb 1 2008, 09:48 PM)  As the title says. I am going to replace my brake rotors, as they are worn. Do I need to replace my wheel bearings as well? Is there a simple test to see if they are good to go as they are? front or rear or both? if the bearings are still quiet, the shakedown test works fairly well. also, do the slow turn thing and listen for noise from the bearing ... the rotors can be replaced without changing the bearing. when was the last time you got new wheel bearings? if the answer is "dunno", now is probably a good time to replace them as well ... (IMG:style_emoticons/default/biggrin.gif) Andy |
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| Dave_Darling |
Feb 2 2008, 12:49 AM
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914 Idiot Group: Members Posts: 14,990 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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If you have stock four-lug front rotors, they cannot reasonably be changed without changing the wheel bearings. The five-bolt stuff can, but on the four-bolt setup the rotor is a part of the hub.
--DD |
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| Wilhelm |
Feb 2 2008, 01:23 AM
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#4
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Member Group: Members Posts: 408 Joined: 7-September 07 From: Hooterville, OR Member No.: 8,088 Region Association: None |
Probably can get a set of bearings for $20.00 or less. You'll either have to press out or BFH out the old bearing races to reuse them. In the long run it will be cheaper to simply replace them.
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| root |
Feb 2 2008, 08:53 AM
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Two Wheeled Type4 Completed! Group: Members Posts: 849 Joined: 5-May 04 From: Sterling, VA Member No.: 2,026 Region Association: None |
Front wheel bearings are inexpensive. You've got to put on new inners in the front with new rotors! But do the front outers too! Rears used to be around $50 or so each.
Takes a press and some grease to replace and repack them. But, if you don't know the history of your current ones It's not worth fusing a rotten overheated inner race to an axle spindle! This is no fun! Been there! Done that! (IMG:style_emoticons/default/beer3.gif) Zach your welcome to use the press hear at the shop! Sorry I'm so far away (IMG:style_emoticons/default/biggrin.gif) |
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| Cap'n Krusty |
Feb 2 2008, 09:13 AM
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
QUOTE(Dave_Darling @ Feb 1 2008, 10:49 PM) If you have stock four-lug front rotors, they cannot reasonably be changed without changing the wheel bearings. The five-bolt stuff can, but on the four-bolt setup the rotor is a part of the hub. --DD What? They're easily transferred from the old rotors to the new ones. That said, you'll need new seals whichever route you choose. Frankly, I'd replace them anyway. The Cap'n |
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| ws91420 |
Feb 2 2008, 11:17 AM
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#7
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Yes I have one a Lensley 914 Group: Members Posts: 2,063 Joined: 10-September 03 From: Ruther Glen,VA (halfway between sticks and civilization) Member No.: 1,137 Region Association: MidAtlantic Region |
The new rotors typically have bearing races installed in them already. If you don't know how old the bearings are I would replace them as preventive maintance item. Make sure you pack the bearings well with proper grease and follow instructions to make sure the retaining nut is tight but not too tight.
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| SirAndy |
Feb 2 2008, 12:48 PM
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#8
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Resident German Group: Admin Posts: 41,651 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(Dave_Darling @ Feb 1 2008, 10:49 PM) If you have stock four-lug front rotors, they cannot reasonably be changed without changing the wheel bearings. The five-bolt stuff can, but on the four-bolt setup the rotor is a part of the hub. duh ... yes, i was thinking 5-lug ... i haven't touched a 4-lug in years ... another reason to convert to 5-lug ... (IMG:style_emoticons/default/smile.gif) Andy |
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