2001 Toyota Corolla Rear Drum Brake Knocking Noise

2001 TOYOTA COROLLA
105,000 MILES • 4 CYL • FWD • AUTOMATIC
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SUMAC0401
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I recently did my own rear brake job. I own a 2001 Toyota Corolla LE. the rear had drum/brake shoe combo. I replaced both the drum (Brembo brand) and brake shoe (OEM Toyota). I had bought these parts about 2 years ago and left them in the shed. When i opened the drums, there was surface rust on it. After replacing the rear brakes, I notice on the driver rear side when I step on the brake (from around 25-30 MPH), there is a knocking noise. It does not happen all the time, just sometimes. I've recheck both rear side side and made adjustments. The hand parking brake lever pulls up about 5 clicks to prevent the rear wheels from spinning. Now if I let go of the lever, the rear right wheel will spin freely. The left rear wheel will spin freely, but have some rough patches. I know I adjusted both sides brake shoes, pretty evenly. Can my "New" 2 year old drums be warped? Or is something else not done correctly on my part? I've done rear drum repairs on my own a few times in the past without any problems.
Apr 11, 2010 at 10:21 PM
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MMPRINCE4000
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Drums could be warped, have them checked at autoparts stores that turn drums.
Mar 29, 2021 at 11:09 AM
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SUMAC0401
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Thanks mmprince4000. When I have some free time, I'm going to try and put back the old OEM Drums to see if that knocking noise is still there when I brake. If its gone, then the new Brembo drums are warped. If not, then not sure what i should do next. More adjusting?
Mar 29, 2021 at 11:09 AM
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MMPRINCE4000
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I purchased NEW drums for a 91 Corolla and they were BOTH warped and had to be turned.

If not warped re-adjust shoes.
Mar 29, 2021 at 11:09 AM
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SUMAC0401
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It turns out the left rear drum was indeed warped. Had Sears auto center re-surface it and the banging noise and brake pulse was gone.
Mar 29, 2021 at 11:09 AM
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MMPRINCE4000
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Too bad you can't buy NEW parts and have them work?
Mar 29, 2021 at 11:09 AM
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SUMAC0401
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Makes you wonder sometime how Brembo gets its stellar reputation... Thank you for all your help mmprince4000.
Mar 29, 2021 at 11:09 AM
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MMPRINCE4000
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Your welcome.
Mar 29, 2021 at 11:09 AM