How to bleed Xt Brakes
How To Bleed Shimano Deore XT Hydraulic Disc Brakes by Performance Bicycle
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hey I'm mark from performance bicycle
today I'm going to show you how to bleed
Shimano Deore XT hydraulic disc brakes
the reason you'll most likely want to
bleed your brakes is if you shorten the
hose if you do a complete hose
replacement or if you just want to do
annual maintenance on your brakes the
tools you're going to need for this job
are the Shimano bleed kit with funnel
Shimano hydraulic mineral oil bleed
block seven millimeter box wrench
two-and-a-half three four and five
millimeter allen wrenches isopropyl
alcohol a clean rag and some sort of a
strap a velcro strap or a toe strap will
work alright the first step you want to
do is you want to adjust the lever all
the way out and you want to adjust the
free stroke all the way in to adjust the
lever use the tool free adjustment and
just turn it clockwise
counting the turns so you can reset it
to its original position until it's as
far away from the bar as it'll go then
you want to adjust the free stroke all
the way in I turn it clockwise the next
thing you're going to want to do is
remove the brake pads from the brake
caliper to do that you want to remove
the c-clip from the brake pad axle first
and then use a three millimeter allen
wrench to remove the brake pad axle
remove the brake pad axle let's grab the
pads at the top slide them out of the
caliper and set them aside okay the next
thing you're going to want to do is push
the Pistons in flush with the caliper
body to do that just take a flat spanner
slide it through the caliper and then
evenly push the piston in flush you want
to do that for both sides okay once you
push the Pistons in flush with the
caliper you want to slide the bleed
block in between the Pistons and use the
brake pad axle to hold it in place now
we're going to move up to the brake
lever you're going to want to position
the brake lever at a 45-degree angle to
the ground so loosen it slightly get it
where it needs to be and then just snug
it up then you're going to want to
remove the bleed screw from the top of
the brake lever that's a two and a half
millimeter allen wrench just unthread
that and make sure you get the o-ring
with it when you take it off
then you're going to thread the bleed
funnel into there where the bleed screw
came out of just get it finger tight and
then add a little mineral oil to the
bleed funnel okay then you're going to
want to remove the brake caliper from
the framer fork so just unthread the
mounting bolts take off the caliper set
the bolts in the adapter to the side
you're going to want the caliper to hang
straight down from the lever giving it
the most direct line for fluid and any
air bubbles to pass through the system
then you're going to take the bleed
syringe and fill it with mineral oil
just slide the tube in there about how
full is fine and you're going to want to
also remove any air so if you hold it
upright and just kind of push it slowly
you'll get all the air out of the
syringe once all the air is out you're
ready to attach the syringe to the brake
caliper once you've got the syringe
filled with oil you're going to want to
go to the caliper and remove the cap
from the bleed nipple it's a rubber cap
just pop it off and set it aside take
your seven millimeter box wrench slide
it over the bleed nipple and then you're
going to want to attach the syringe to
the end of the bleed nipple okay when
this syringe is attached to the bleed
nipple you're going to want to take the
seven millimeter box wrench and loosen
the bleed nipple and eight turn and then
start pushing fluid through slowly with
the syringe as you're pushing fluid
through the system check the funnel to
see air bubbles coming up through okay
once you no longer see bubbles coming up
through the funnel go ahead and close
the bleed nipple and remove the syringe
from it the next step is to take the
tube with the oil collecting bag and
attach it to the bleed nipple then
you're going to want to go up to the
funnel and add some fluid about a third
full should be sufficient you don't want
it to get so low that it's able to pull
air into the system once you have the
fluid in there go back to the bleed
nipple
listen it 1/8 turn again and then pump
the brake lever a couple of times to
start the oil flowing through the system
you'll see it start coming through with
small bubbles take the wrench and just
kind of tap the brake hose and tap the
caliper that will break loose any small
bubbles that are kind of sitting in
there once you're getting just
consistent fluid coming through with no
bubbles go ahead and close the bleed
nipple again check the funnel to make
sure it still has sufficient mineral in
it and add a little bit if necessary
again you don't want it to get so low
that air can get in and then you're
going to secure the brake lever with a
velcro strap or a toe clip strap just
pull the lever in and loop the strap
around and put some pressure on the
brake lever that'll hold it in place
then you're going to take your seven
millimeter box wrench again and go back
down to the bleed nipple and open and
close it several times in quick
succession and while that lever is
strapped it will force the last bit of
fluid and air bubbles if there are any
out it looks pretty clean so just go
ahead and close that bleed nipple
securely pull the tube with the oil
collecting bag off of it and then you're
going to want to replace that rubber
bleed nipple cap on the end of the bleed
nipple to keep dirt and other debris out
of there okay then you can go ahead and
remove the strap from the brake lever
okay so now you just want to squeeze the
brake lever and as the last of the air
bubbles come out you'll feel the lever
start to stiffen up and get more firm
for this step you're going to want to
take the brake lever loosen it up
slightly so you can rotate it on the
handlebar and you're going to want to
rotate it up about thirty degrees
squeeze the lever to get any remaining
air bubbles out they get they tend to
get trapped in the reservoir up here so
this kind of gets the last bit of them
out rotate the lever down thirty degrees
squeeze it while checking for air
bubbles and just repeat that back and
forth and you don't see any more air
bubbles coming out so you're going to
put place the brake lever in a
horizontal position here so that the
fluid and the funnel is level
and then take the stopper plug up that
funnel then you can unthread it from the
lever and set it aside
top off the fluid and the bleed port
probably just need a drop there and then
replace the bleed screw and o-ring with
two and a half millimeter allen wrench
you get just a little bit of fluid
overflow in here that's fine
this means it's nice and full tighten it
securely just back take your clean rag a
little bit isopropyl alcohol and clean
any fluid off the brake lever
so once you've wiped the lever off just
go ahead and return the brake lever to
its original position on the handlebar
and tighten it securely okay so now
we're going back to the caliper we're
going to remove this remove the bleed
block go ahead and get your rag and your
alcohol and clean the brake caliper off
so the pads don't get contaminated then
you're going to want to reattach the
caliper to the framer Fork
you're going to want to leave the
caliper a little loose so you can Center
it over the rotor once the wheels
installed and then just go ahead and
replace the brake pads slide the pad
axle through tighten it securely and
then reinstall the c-clip on the
backside of the pad axle okay so now you
want to reinstall your wheel
squeeze the brake lever a few times to
Center the pads and then squeeze and
hold the brake lever while tightening
the caliper mounting bolts to Center the
caliper over the rotor and you're ready
to go and that's how you bleed Shimano
Deore xt disc brakes if you follow these
steps it's a real breeze if you have any
further questions feel free to contact
our spin dot your tech line or stop by a
local performance store and see one of
the spin doctor techs there thanks and
have a great ride
