Is there a trick to replacing rear brake pads? - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #1 of 21 (permalink) Old 08-27-2020, 10:11 PM Thread Starter
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Is there a trick to replacing rear brake pads?

Wow, another problem I have never dealt with!! Got replacement pads for front and rear brakes, Niche brand~semi-metallic. For the life of me I cannot get the rear pads to clear the disc. Piston is flush to caliper. I've tried inserting outside pad first then the rear...opposite of that.. everything. I feel like the pads are about 1/32mm to thick. Is that possible or am I missing something simple? I am about 2 put these pads on a belt sander and reduce the thickness that way.

In a perfect world I would seat the pads and then pull caliper over, tighten bolts with the rubber boots and call it a day. NOT WORKING

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post #2 of 21 (permalink) Old 08-27-2020, 11:38 PM
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well I havent put my rears on yet .. but the easiest way I found to put the fronts on was to put the caliper on and THEN insert the pads .. I wiil try tomorrow ..I have the same pads sitting next to my computer
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post #3 of 21 (permalink) Old 08-28-2020, 12:39 AM
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Had that happen to me about 30 years ago on a Yamaha XS1100. It is only one of the reasons why I now never buy after market pads, only OEM for me.
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post #4 of 21 (permalink) Old 08-28-2020, 12:41 AM
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Have you looked at your rear brake fluid level? Sometimes you have to remove some fluid to allow the pistons to retract fully.

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post #5 of 21 (permalink) Old 08-28-2020, 12:20 PM
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I would check the pad thickness vs OEM spec. They may simply bee too thick. If so, I would return and get OEM
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post #6 of 21 (permalink) Old 08-28-2020, 12:52 PM
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Buy oem pads or get a decent mask for using the belt sander. Have seen it a few times with after market pads being too thick.
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post #7 of 21 (permalink) Old 08-28-2020, 01:07 PM
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Never had this problem with OEM or EBC HH.

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post #8 of 21 (permalink) Old 08-28-2020, 01:56 PM
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Not sure about Niche, I've only used OEM and EBC without issues. Might be a brand issue, I only see Niche being sold through Ebay and discount retailers.

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post #9 of 21 (permalink) Old 08-29-2020, 10:55 AM
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Quote:
Originally Posted by rbentnail View Post
Have you looked at your rear brake fluid level? Sometimes you have to remove some fluid to allow the pistons to retract fully.
Thats my first thought, you're probably fighting against the master cylinder that is full, not allowing caliper pistons to retract all the way. Sanding the pads is not the way to go.
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post #10 of 21 (permalink) Old 08-29-2020, 05:53 PM
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Quote:
Originally Posted by Cagefree View Post
Thats my first thought, you're probably fighting against the master cylinder that is full, not allowing caliper pistons to retract all the way. Sanding the pads is not the way to go.
I've used 4 or 5 different mfr's pads, all without sanding. They all fit fine once I removed enough fluid for the pistons to retract.

Other suggestions:

- have you loosened the stabilizer arm mount screws on both ends? Sometimes I had to do that to be able to wiggle the caliper a bit.

- I use a door wedge to push pistons apart. Available at hardware stores, used for plumbing/squaring door frames. Wood wedges, wider than the brake rotor. Works great to push all pistons at the same time, mostly b/c it's a wedge . Start small end between new pads and push until the wide end is completely through.

Russ
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