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fine metal flecks found right rear (Read 1958 times)
Feb 26th, 2015 at 6:05pm

samuel   Offline
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Removing my right wheel after hearing a rubbing noise while driving I noticed fine metal flecks on top of trialing arm, inside wheel, etc. Checked 1/2 shaft and wheel hub fortightness all seemed okay with cv joint and wheel bearing play. Wondering if it could be parking brake shoe or hardware rubbing. Dont think I have heard of bad wheel bearings producing metal shavings. Need to drill out the rivets on hub to get a look at the E brake. any thoughts or suggestions on this?
 
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Reply #1 - Feb 26th, 2015 at 8:40pm

olddiver   Offline
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Having that happen in the what I call the scary area is a major concern. I would look real close at what your flecks are made of, tire rubber? brake pads? etc. find out for sure what the flecks are and go from there. I would not take it on a high speed fun run until fixed. I'm sure a more knowledgeable forum member will jump in with some help. Be safe and let us know what the problem is Cool
....Mark
 

Upon the plains of hesitation bleach the bones of countless millions who on the threshold of victory they sat down to rest, and resting they died.
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Reply #2 - Feb 27th, 2015 at 4:15am

samuel   Offline
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Cars on jacks right now, not driving until I fix it. Flecks appear metallic, shiny but dont seem to be magnetic as a magnet doesn't seem to  pick it up. Stock wheels are on so no rubbing there.
 
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Reply #3 - Feb 27th, 2015 at 5:11am

68-73   Offline
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I would look at the parking break assy. Just mark the rotor so you put it on in the same location & do a run out on the rotor after everything is back together.
Alan Smiley
 
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Reply #4 - Feb 27th, 2015 at 5:14am

Artsvettes   Offline
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I agree with the park brake hardware. Replace with stainless steel...............jack
 

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Reply #5 - Feb 27th, 2015 at 6:36pm

samuel   Offline
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pulling the rotor and putting back on in the same location will change the run out?

If it does how would I check for this and if its not correct what do i need to correct it?
 
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Reply #6 - Feb 28th, 2015 at 5:00am

68-73   Offline
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Putting it back on in the same location should not change the run out. I just like to check it while I'm in there. Here's an inexpensive one
http://www.harborfreight.com/clamping-dial-indicator-93051.html
If you do the breaks on these cars you need one of these.
Alan Smiley
 
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Reply #7 - Feb 28th, 2015 at 6:57am

samuel   Offline
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thanks for the info. Never used one. How is it used? what am I looking for and if it off does that mean I need a new rotor?
 
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Reply #8 - Feb 28th, 2015 at 7:47am

68-73   Offline
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Info all over the internet https://www.youtube.com/watch?v=H_1ySs7liS4

Some are magnetic base & some clamp on. If memory serves me right you want .005 run out or less. There rear trailing arm assy  & rotor should be balanced as an assy but in the real world it aim't gonna happen. As long as your bearings are good you should be able to get the proper run out ...if not have the rotors turned & recheck ( move the rotor one stud at a time to get the least run out). Excessive run out can cause the breaks to pulsate & pull air into the break system which causes a spongy break pedal...hope this makes sense.
Alan Smiley
 
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Reply #9 - Feb 28th, 2015 at 4:46pm

samuel   Offline
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Okay, drilled out the rivet heads and have been hammering away on the rivet studs with a 1/4" punch with no success. they are in so tight I cant imagine they would ever come loose on their own so I figure i can leave them in without worry about them coming out.

The lower PB spring appears to be the culprit as it was hanging loose on one end where it was worn thin and shiny at the hook. Sure beats pulling the whole hub to replace wheel bearings as many had suggested. Any tips on replacing the PB shoes and hardware?
 
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Reply #10 - Feb 28th, 2015 at 6:56pm

olddiver   Offline
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This might help a little.
http://www.corvettemagazine.com/tech-articles/1965-1982-corvette-brake-rotor-rep...
Was told one time that checking the run-out before you run is great insurance  Cool
....Mark
 

Upon the plains of hesitation bleach the bones of countless millions who on the threshold of victory they sat down to rest, and resting they died.
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Reply #11 - Mar 1st, 2015 at 4:08am

68-73   Offline
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Those rear parking breaks are a PIA, Just take your time...a long pair of needle nose will come in handy & a hefty spring hook
Alan Smiley
 
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