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Replace, re-pack, or leave Ďem alone? Your thoughts?

Old 08-11-2018, 05:30 PM
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Matth624
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Default Replace, re-pack, or leave Ďem alone? Your thoughts?

Hey guys, Iím planning a major front brake job in the coming weeks. (Calipers, rotors, pads, rubber lines...etc) The car stops ok but Iíve noticed itís pulling hard left when the brakes are firmly applied and the rotors are showing signs of excessive wear. I believe these are original calipers and rotors are still rivited to the hubs.
My question is: should I go ahead and replace inner and outer wheel bearings? Clean, inspect and re-pack existing bearings, or leave them alone?
I have no reason to believe the bearings are bad. I donít really want to open up a can of worms and Iíve got a bad habit of ďwell while Iíve got it apart...Ē
Whats your thoughts?
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Old 08-11-2018, 07:07 PM
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Originally Posted by Matth624 View Post
Hey guys, Iím planning a major front brake job in the coming weeks. (Calipers, rotors, pads, rubber lines...etc) The car stops ok but Iíve noticed itís pulling hard left when the brakes are firmly applied and the rotors are showing signs of excessive wear. I believe these are original calipers and rotors are still rivited to the hubs.
My question is: should I go ahead and replace inner and outer wheel bearings? Clean, inspect and re-pack existing bearings, or leave them alone?
I have no reason to believe the bearings are bad. I donít really want to open up a can of worms and Iíve got a bad habit of ďwell while Iíve got it apart...Ē
Whats your thoughts?
Are you sure you are replacing the rotors? Others (DUB, GTR1999, for example) can weigh in on the correct way to do that part of the job.

As for the wheel bearings, this is one of the easiest things to do on a C3. 90 percent of the job is taking the calipers off and hanging them out of the way, so don't be afraid of "while I'm in there - itis" on this particular job. I used a Lisle 34550 Bearing Packer to do the messy part, but you still need to get grease on your (gloved) hands. Make sure you follow the shop manual instructions to get the correct pre-load, and have a good torque wrench.

You'll need a new bearing seal either way, but if you replace them, be sure to get genuine Timken bearings.
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Old 08-11-2018, 07:22 PM
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sstocker31
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Clean up the bearings as if you are going to reuse them, and then inspect them using the attached link as a reference guide. You'll soon know if they're good to reuse.

https://www.timken.com/pdf/5892_Bear...20Brochure.pdf
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Old 08-11-2018, 07:34 PM
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Replacing bearings just because you want to....well...you can do that. OR....you can clean and inspect BOTH the bearing adn races and see if they actually need to be replaced. They only may need to be repacked.

IF you are going to mess around with your rotors...this area DOES take some effort from you to make sure that.... A.) IF oyu install NEW ROTORS...You get them installed and indexed correctly for proper run-out. B.) If you keep the originals and have them turned down they a re NOT being turned BELOW 1.230" .

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Old 08-11-2018, 09:49 PM
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Fredtoo
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Originally Posted by Matth624 View Post
Hey guys, Iím planning a major front brake job in the coming weeks. (Calipers, rotors, pads, rubber lines...etc) The car stops ok but Iíve noticed itís pulling hard left when the brakes are firmly applied and the rotors are showing signs of excessive wear. I believe these are original calipers and rotors are still rivited to the hubs.
My question is: should I go ahead and replace inner and outer wheel bearings? Clean, inspect and re-pack existing bearings, or leave them alone?
I have no reason to believe the bearings are bad. I donít really want to open up a can of worms and Iíve got a bad habit of ďwell while Iíve got it apart...Ē
Whats your thoughts?
There is probably 40 year old grease in there.

Pull and clean the bearings, if they are good, grease them.
If they are bad, put new ones in.

Either way, put a new seal in there.
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Old 08-11-2018, 10:17 PM
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Matth624
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Great information from all of you folks as always! This will definitely help me to put together a plan of attack. Thanks to all of you!
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Old 08-12-2018, 12:33 AM
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Originally Posted by Matth624 View Post
Great information from all of you folks as always! This will definitely help me to put together a plan of attack. Thanks to all of you!
Just an example for bearings. http://www.cssbinc.com/1963-82timken...ngkit-1-2.aspx

Good Luck

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Old 08-12-2018, 09:50 AM
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pigfarmer
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Originally Posted by Matth624 View Post
Hey guys, Iím planning a major front brake job in the coming weeks. (Calipers, rotors, pads, rubber lines...etc) The car stops ok but Iíve noticed itís pulling hard left when the brakes are firmly applied and the rotors are showing signs of excessive wear. I believe these are original calipers and rotors are still rivited to the hubs.
My question is: should I go ahead and replace inner and outer wheel bearings? Clean, inspect and re-pack existing bearings, or leave them alone?
I have no reason to believe the bearings are bad. I donít really want to open up a can of worms and Iíve got a bad habit of ďwell while Iíve got it apart...Ē
Whats your thoughts?
I just cleaned & repacked mine. The bearings and races were absolutely fine - and probably original - everything said 'made in the USA' on it. The new grease seal didn't, but as long as it does it's job I don't care. I wouldn't replace anything that didn't need it unless it was in some really inaccessible spot.

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Old 08-12-2018, 01:04 PM
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You can index the rotors to the best position you can find and then bolt them to the hubs with 3 wheel nuts or get fancy and re-use the rivet holes to bolt the rotors to the hub. Then when you've pulled the bearings apart, you can get a shop to put the rotor and hub on the resurfacing machine indexed by the bearing races and give the rotors a cut to take away any remaining runout.
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