Installing Brake Pads - Honda TRX Forums: Honda TRX 450R Forum

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Old 05-18-2011, 08:29 PM   #1 (permalink)
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Exclamation Installing Brake Pads

I am in the process of installing new pads and I have not gotten very far...

I started on the rear, i got the caliper off and the old pads out, now i am pressing the piston back in to make room for the pads, and it wont press back in flush with the caliper. This is making it impossible to install the new pads as there isnt enough clearance between the piston and the other side of the caliper.

I have tried to remove the emergency break from the caliper, and back the adjustment all the way out. I'm starting to think that the piston isn't going to go back in all the way.

Any thoughts, tips, tricks, or pictures to help me out would be great.

Thanks!
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Old 05-18-2011, 09:14 PM   #2 (permalink)
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if your sure the parking brake is not the issue, then remove cap on fluid and check to see there is enough air space for the fluid to be pushed back in
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Old 05-18-2011, 09:17 PM   #3 (permalink)
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yep, i did that also. I did get the piston to move a little bit but not enough to clear the new pads or go back flush with the caliper.

Any other ideas?
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Old 05-18-2011, 09:25 PM   #4 (permalink)
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only other thought would be to pump the pedal lightly and work the piston out and in afew times, i always spray piston with brake cleaner then fluid film to lube the o-ring on the piston when installing new pads.

if that doesn't free it up to push in all the way, then loosen bleader screw and try to push in piston
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Old 05-18-2011, 09:28 PM   #5 (permalink)
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Thats a good idea. I will try to work the piston in and out a bit from where I have it now and see if i can get it to break free....I am trying to avoid opening the bleeder as i dont want to have to deal with bleeding the brakes if i dont have to.
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Old 05-18-2011, 09:32 PM   #6 (permalink)
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If its possible try gettin a small C clamp on the piston and trying to push it back in that way.
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Old 05-18-2011, 09:34 PM   #7 (permalink)
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I am using an actual caliper tool...kinda looks like a caulk gun but has a wide plate to press the piston back in. If i can't do it with this tool, a c clamp isn't gonna have a chance.
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Old 05-18-2011, 09:40 PM   #8 (permalink)
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i use c-clamp vise grips with the old pad on the piston
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Old 05-19-2011, 05:43 PM   #9 (permalink)
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Any other ideas? I haven't had a chance to go back out and work the piston in and out a few times to see if it will break free the rest of the way, but just thought i would try for a few more suggestions.
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Old 05-19-2011, 10:15 PM   #10 (permalink)
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Good News. I got the piston pushed all the way in..I tried the advice from Joey. I pumped the piston in and out a few times, cleaned around the pistion, and then i opened the bleeder and it finally popped and gave way.

Thanks for all the help!
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Old 03-10-2012, 07:52 PM   #11 (permalink)
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thanks for the tips guys, i'm having the same issue at the moment.. and even drove off with it tight thinking oh it'll loosen up down the road.. nope.. got home and the rotor was bright red hahaha.. so yea i'll lube it up n work it back n forth.
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Old 03-11-2012, 03:35 PM   #12 (permalink)
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Make sure your caliper bracket is free too and that it slides like it should
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