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05-22-2011, 02:41 PM
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ATV Enthusiast
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Member #14812
Join Date: May 2011
Posts: 33
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Rear caliper problems
I was thinking my rear caliper was seized on my 99' Sportsman 500. I removed the caliper from the bracket, tied it up with some wire, and moved the four wheeler a couple feet. Now I never removed any lines or anything, just removed the caliper. I went to reinstall the caliper and I had to pry open the brake some to get it to slide over the rotor. I got the caliper back over the rotor and got everything hooked back up. Now when I press the foot brake it doesn't close the caliper at all but when I squeeze the hand brake it closes just fine BUT the caliper won't open back up. Sorry if any of that is confusing. I'm thinking the caliper is seized and I've got a problem with the foot brake. There's no air in the lines. Any ideas as to what's wrong?
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1999 Sportsman 500
Stock
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05-22-2011, 02:55 PM
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Polaris ATV Legend
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Member #6579
Join Date: Aug 2010
Location: Central Connecticut
Posts: 3,114
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You likely blew the seals in the caliper... You should never depress the brake without the disc between the pads...
The piston inside the caliper is only designed to move so far. making it more farther can push it out of its bore, usually tearing the seals as it goes.
Sorry man, I am sure its not what you wanted to hear.
CW
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Mine
2007 Polaris Sportsman 700 EFI W/ 26" Maxxis Big Horns, Crusher Black alloy rims, EPI clutch kit, EPI HD springs F&R, Moose front/Ricochet rear CV guards, Kolpin Aux 4 Gal fuel can, UNI air filter, Moose camo tank bag, F&R rack extensions, Lock-N-Ride lo & hi windshields, Acerbis hand guards, CUSTOM mirrors and a 3000# Gorilla winch, W/Am-steel blue synthetic line, running thru a winch saver and an aluminum fairleed.
NEW: Thor's foot pegs and CUSTOM rear rack support frame and WES seat box. CUSTOM front and rear mud flaps.
Momma's
2000 Polaris Trail Boss 325 W/23" Wooly Bogger rear tires, Powermadd hand guards, UNI filter, Big Dawg rear and side bags, Polaris Mirrors, Kolpin grips, Quad Boss tank bag, Gas tank fuel gauge, Custom front 12v power port, Dual 1.5 Gal Kolpin fuel cans, mounted in custom rear facing mounts and a 2000# Super-Winch in a custom built mount W/winch saver.
CALL Thor @ www.TheATVSuperStore.com - 815-321-3888
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05-22-2011, 04:27 PM
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ATV Enthusiast
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Member #14812
Join Date: May 2011
Posts: 33
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So what's the fix? Rebuild the caliper? Or is it not rebuild able?
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1999 Sportsman 500
Stock
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08-12-2011, 05:31 PM
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Junior Member
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Member #17639
Join Date: Aug 2011
Location: buffalo
Posts: 1
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actually i just had a similiar problem. you need to adjust the nut on the lever on the caliper that gets pulled down when the brake pedal is applied, or if you get new pads and press the piston in with a c clamp or something and put it back together the lever on the mechanical braking of the rear works fine
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