Hey everyone!
In this short video I'm gonna show you how to replace a Shimano brake caliper.
You would do this when you have a bad one, or a leaky caliper,
when the ceramic pistons are cracked
or when you want to replace the two piston caliper like the ones you see over here
with the four piston version that Shimano produces.
You would get about 20% more braking power
just by replacing the caliper with the four pot one.
You can do that because for the last three generations of brakes
Shimano's been using thisSH-BH90 brake hose.
Also, the brake hose fittings like tis banjo connector over here
have been identical for all the brakes.
Shimano Deore and the new XTR M9100 are different.
They use a connecting bolt to connect the hose to the caliper
very similar to connecting the hose to the brake lever as you see it over here.
In that case, I covered the procedure in a video
on how to cut brake hoses or reconnect brake hoses
and you can easily find it on my YouTube channel.
Step one is to remove your brake pads
as they will get contaminated by the brake fluid.
Line up the bike so your caliper will be at the higher point compared to the brake lever.
Also, you might want to remove the rear wheel.
Using a 4 mm Allen key, just loosen up that banjo connector bolt all the way.
And before you take that bolt out,
just get ready to remove the caliper completely.
Remove the bolt and tilt over the caliper to prevent oil spills
and you will see the tiny o-rings that provide the seal
between the banjo connector and the caliper body.
The banjo bolt is specific to the type of caliper in use.
You can see an M7000 SLX here, and also you saw the M8000 XT
same banjo bolt was used by the previous generation XT M795 and SLX M675.
The newest XT introduced with the 12 speed, M8100,
these are the race calipers, two piston calipers,
SLX M 7100 is identical.
They've been redesigned and now the banjo attaches here to the inside of the caliper.
The banjo is painted black but other than that is identical with the old one.
And to go along with it, what we're gonna have is this stubby banjo bolt.
Aside from the banjo color, the hose is the same, the SM-BH90.
Also when you buy brake hoses, they will come in different hose length,
and you can see they include at least a banjo bolt,
then you have the o-rings and everything you need
to connect this to the caliper.
Caliper that is usually specified here.
However, as you know from this video, you can buy whichever brake hose is cheaper,
and just make sure that you have the proper banjo bolt for your type of caliper.
With an o-ring on each side of the banjo connector, you are ready to install your new caliper.
Just start it by hand,
and then continue on with a 4mm Allen key.
Just tighten it snug for now
then replace your caliper bolts.
And now you're ready to adjust the angle of your banjo connector again
and tighten this bolt to 8-10 Nm if it's a 4 mm hex key,
or 5-7 Nm if this was a 3 mm hex key.
If you don't have a torque wrench just tighten this snug,
there's no need to over tighten this bolt.
Clean up the spilled oil with a bit of alcohol
and you're pretty much ready to bleed the brakes.
You have to do that because you've introduced
quite a bit of air right here on the caliper,
but I'm gonna leave that for another video.
And that is pretty much it for today folks!
If you have any questions let me know below.
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don't forget to Like and subscribe
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in the description of the video
and until next time, I will see you folks on the trails.
Cheers guys, cheers!