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Old 04-03-2005, 01:55 PM
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Rotor not fitting right?

In the middle of redoing the front brakes on my 89 chevrolet 1500 4wd. I get to the passenger side and it seems that the rotor doesnt fit the same as the driver side, and this causes the bolts to not mate up. The outer pad touches the rotor before the caliper will fit over the other side for the bolts to meet their threads in the spindle. Anybody got any ideas what the *&^%# is going on??

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Old 04-03-2005, 02:09 PM
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Sounds like your "sliders" on the caliper are seizing up. I am not sure how your brakes are, but they have to slide on a pin or bolt or something as they wear. That makes them wear evenly, and not all on one side.
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Old 04-03-2005, 03:45 PM
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just my 2 cents, but next time you can actually get loaded calipers ( with pads, sliders,....) for a little more than just the pads. I get mine at NAPA. Sure you have to bleed em, but you'd have to do that anyway. Back to your questio, yeah, it more than likely it is the sliders. You'll have to pull them and the bolts and clean em up. Make sure you clean out the boots too.
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Old 04-03-2005, 04:55 PM
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Just a little FYI...You don't have to bleed the caliper unless you open the bleeder or lines.
Take the sliders out,wire brush them and smear on some caliper grease, and reinstall.
Is the rotor the correct part? Did you compare the new to the old?
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Old 04-05-2005, 06:48 PM
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I am not totally clear on your question but sometimes when you replace pads and pull calipers off the pistons have tendency to creep out a bit and then when you install new pads the caliper won't fit over rotor. I always use a large C clamp and push piston back into caliper a bit to get assembly over rotor. I don't know if that helps or not ... GOOD LUCK... THERESA
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Old 04-06-2005, 11:37 AM
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Ditto on the guide pins. Chev front brakes are known for guide pin siezing, you need to take the pins out, clean or replace them. Notice that they are a two piece pin, with a bolt that goes through an outer sleeve. New sets come seperate, with the bolt and sleeve as two pieces. The originals were staked so they wouldn't come apart. Also, when you replace these pins, it is a good idea to get a caliper alignment kit. This is just the little o-rings that go into the guide pin bores. If the pins have siezed, chances are that the alignment o-rings are goofed too. If I remember right, the Wagner P/N is H5201-2.
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