TRX250R.ORG
Workshop => Suspension and Chassis => Topic started by: broken1 on April 12, 2015, 02:49:27 AM
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I'm rebuilding a rear caliper & the front floater pin is froze up. I put the nut on & tapped on it but it was solid like it was bottomed out so I tried heating with a torch to 200 deg. & no movement. Got the seal out & let sit for 3 days with penetrating oil & tried heating to 250 & got nothing using vise grips on the pin:
(http://forums.trx250r.org/vbulletin_imports/322_5088_2017-04-18_7207.jpg) (http://forums.trx250r.org/vbulletin_imports/322_5089_2017-04-18_6882.jpg)
My next idea was to drill a hole through the back of the caliper pin bore to get penetrating oil in there & try to press it out. Than put a small stainless pipe plug in the hole:
(http://forums.trx250r.org/vbulletin_imports/322_5090_2017-04-18_3423.jpg)
I wanted to keep the original brakes on the bike & would like to repair this caliper if it's possible so if anyone has dealt with this & has advice or a better idea it would be much appreciated.
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Try a slide hammer...you'll get it!! Use some heat, I would say a touch more than you used before...cheers!!!
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I have done this many times,, I grab the pin with big vise grips sacrifice the pin . not much chance to get it out if you don't,, put the caliper in the vise and give it hell!!! I have 20 pius calipers and have saved 90%
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I would add a little heat to the aluminum while using the visegrip method as Kasey suggested. Heat the whole boss up evenly
Best regards
-Jason
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Just reemember there is a steel sleeve in there .. Heat it to much and pull the sleeve out and you just killed your caliper
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Well I clamped the vise grips on the pin as tight as I could possibly get them, heated the area arount the pin to 300 deg, tapped the vise grips with a hammer & it broke loose. After that I clamped the vise grips in the vise & kept heat on the caliper while I worked it off the pin & finally won the fight. Thanks for your help with this guys.
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a little anti seize goes a long way,, in the future