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Rear drum cylinder bore 1" or 15/16"?

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Old 11-14-2012, 06:52 AM
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Rear drum cylinder bore 1" or 15/16"?

I have a 2000 4R with 16" wheels. The tag on the door says 15" wheels so I'm guessing it was a dealer option. I also have the factory painted wheel arches. I replaced the rear shoes and have been having an issue with a slow release on one of the drum cylinders. I think I finally have everything back together correct but under hard braking I can tell that one of the rear wheels is not releasing quick enough. It starts to vibrate even after letting off the brake. Also when at a stand still and press hard on the brakes, it takes a half second to fully release. I had a spring on wrong which was causing dragging and the shakes, but I have since corrected that. My question is there are two models of brake cylinders, one is a 1" bore and the other is 15/16" bore which depends on size wheels. How can I know if the brake componants were made for a 15" vs 16" SR5? If the tag on the door said 16" I'd feel more comfortable. I did replace the front pads and rotors and used the 16" reference without issues so I'm leaning toward the 16" hardware. Just want more of a warm fuzzy feeling I'm getting the right hardware without pulling everything off for the 3rd time.

TIA,
Kevin
Atlanta
Old 11-14-2012, 07:10 AM
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You'll probably will not know until you tear it down as to what components were used.
Order 2 of each and return the ones you do not use, I suppose. Maybe someone knows more on this than I do.

http://www.toyotapartseast.com/Page_...3553,3554,3560
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