Shimano XTR Manual de instrucciones - Página 2
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SI-0113A-001-00
Technical Service Instructions
SI-0113A-001
Adding mineral oil and
bleeding air
When carrying out the air bleeding operation for the
BR-M985, you will need the SM-DISC (oil funnel and oil
stopper).
With the spacer for bleeding
Note:
(yellow) still attached to the
Carry out the steps within the
calipers, place the bicycle into a
following range so that the end with
bicycle stand or similar as shown
the bleed nipple is facing downward
in the illustration.
as shown in the illustration. If the
steps are outside this range,
complete air bleeding may not be
possible.
Hose
Calipers
Bleed nipple
I When using the bleed nipple
1.
Set the brake lever so that it is in the riding position at a 45 degree angle to
the ground, and then remove the upper bleed screw and the O-ring and insert
the oil funnel. Do not insert the oil stopper at this time.
Bleed screw
Oil funnel
O-ring
2.
Set a 7 mm socket wrench in place,
fill the syringe with oil, connect a
tube to the bleed nipple, and then
loosen the bleed nipple by 1/8 of a
turn to open it. Push the plunger of
the syringe to add oil. The oil will
start coming out from the oil funnel.
Continue adding oil until there are
no more air bubbles mixed in with
the oil that is coming out.
Bleed nipple
3.
Once there are no more air bubbles mixed in with the oil, temporarily close
the bleed nipple.
Do not continually squeeze and release the
lever at this point.
If this is not observed, air bubbles may remain mixed
in with the oil inside the caliper, and it will take longer
to bleed the air. (If the lever is continually squeezed
and released, drain out all of the oil and then add oil
again.)
4.
Set a 7 mm socket wrench in place as shown in the
illustration, and then attach the bag to the tube.
Connect the tube to the bleed nipple and then
loosen the bleed nipple. After a little while, the oil
and air will flow naturally from the bleed nipple into
the tube. In this way it will be possible to easily
extract the greater part of the air remaining inside
the brake system. It may help to shake the hose
gently or to tap the reservoir tank or caliper gently
with a screwdriver or move the position of the
caliper at this time.
Air
5.
The level of liquid inside the funnel will drop at this time, so keep filling the funnel with oil to
maintain the level of liquid so that air is not drawn in (air does not get inside).
6.
Once air bubbles stop coming out from the bleed nipple, temporarily
tighten the bleed nipple.
Bleed nipple
7.
With the brake lever depressed, open and close the bleed nipple in
rapid succession (for approximately 0.5 seconds each time) to
release any air bubbles which may be in the calipers. Repeat this
procedure about 2 to 3 times. Then tighten
the bleed nipple again.
Tightening torque:
4 - 6 N·m {35 - 53 in. lbs.}
8.
If the brake lever is then operated, air bubbles in the system will rise up through the port into
the oil funnel. Once the bubbles stop appearing, depress the brake lever as far as it will go.
The normal condition is for the lever to be stiff at this point.
Lever operation
Loose
Slightly stiff
Stiff
9.
Set the lever unit to the horizontal position as shown in the
illustration and tilt it in the direction of 1 by 30 degrees, and
then carry out step 8 to check that there is no air remaining.
Next, tilt the lever unit 30 degrees in the direction of 2, and
carry out step 8 again to check that there is no air remaining.
If any air bubbles appear, repeat the above procedure until
they stop appearing.
10.
Plug the oil funnel with the oil stopper so that the side
with the O-ring attached is facing downward.
11.
Remove the oil funnel while it is still being plugged with
the oil stopper, and then attach the O-ring to the bleed
screw and tighten it until oil flows out to make sure that
there are no air bubbles remaining inside the reservoir
tank.
* Do not operate the brake lever at this time, otherwise
air may get inside the cylinder.
Tightening torque:
0.3 - 0.5 N·m {2.7 - 4.4 in. lbs.}
12.
Wipe away any oil which has flowed out.
<Replace the bleed nipple with the bleed screw>
Bag
Remove the brake calipers from the frame.
Hold the calipers so that the bleed nipple is facing upward and
then remove the bleed nipple and install the bleed screw. At this
time, tighten the bleed screw until oil flows out to make sure that
there are no air bubbles remaining inside the calipers. After this,
wipe away any oil which has flowed out.
Tightening torque:
4 - 6 N·m {35 - 53 in. lbs.}
I When using the bleed screw
1.
Set the brake lever so that it is in the riding position at a 45 degree angle to
the ground, and then remove the upper bleed screw and the O-ring and insert
the oil funnel. Do not insert the oil stopper at this time.
2.
Remove the bleed screw of the bleed unit from the calipers, and install the
bleeding adapter. Fill the syringe with oil and connect a tube to the bleeding
adapter, and then loosen the bleeding adapter by 1/8 of a turn to open it.
Push the plunger of the syringe to add oil. The oil will start coming out from
the oil funnel. Continue adding oil until there are no more air bubbles mixed in
with the oil that is coming out.
Bleeding adapter
Bleed screw
3.
Once there are no more air bubbles mixed in with the oil, temporarily close
the bleeding adapter.
Do not continually squeeze and release the
lever at this point.
If this is not observed, air bubbles may remain mixed
in with the oil inside the caliper, and it will take longer
to bleed the air. (If the lever is continually squeezed
and released, drain out all of the oil and then add oil
again.)
4.
Attach a bag to the tube. Connect the tube to the
bleeding adapter, and then loosen the bleeding
adapter. After a little while, the oil and air bubbles
will flow naturally from the bleeding adapter into the
Oil stopper
tube. In this way it will be possible to easily extract
the greater part of the air bubbles remaining inside
the brake system. It may help to shake the hose
gently or to tap the reservoir tank or calipers gently
with a screwdriver or move the position of the
calipers at this time.
O-ring
5.
The level of liquid inside the funnel will drop at this time, so keep filling the
O-ring
funnel with oil to maintain the level of liquid so that air is not drawn in (air
does not get inside).
Bleed screw
6.
Once air bubbles stop coming out from the
Bleed nipple
bleeding adapter, temporarily tighten the bleeding
adapter.
7.
With the brake lever depressed, open and close the bleeding
adapter in rapid succession (for approximately 0.5 seconds each
time) to release any air bubbles which may be in the calipers.
Repeat this procedure about 2 to 3 times.
Then tighten the bleeding adapter again.
Bleed screw
Oil funnel
O-ring
8.
If the brake lever is then operated, air bubbles in the system will rise up through the port into
the oil funnel. Once the bubbles stop appearing, depress the brake lever as far as it will go.
The normal condition is for the lever to be stiff at this point.
Lever operation
Loose
9.
Set the lever unit to the horizontal position as shown in the
illustration and tilt it in the direction of 1 by 30 degrees, and
then carry out step 8 to check that there is no air remaining.
Next, tilt the lever unit 30 degrees in the direction of 2, and
carry out step 8 again to check that there is no air remaining.
If any air bubbles appear, repeat the above procedure until
they stop appearing.
10.
Plug the oil funnel with the oil stopper so that the side
with the O-ring attached is facing downward.
11.
Set the bleeding adapter so that it is facing upward and
then remove it, and then insert and tighten the bleed
screw. At this time, tighten the bleed screw until oil flows
out to make sure that there are no air bubbles remaining
inside the calipers.
Tightening torque:
4 - 6 N·m {35 - 53 in. lbs.}
Bag
12.
Remove the oil funnel while it is still being plugged with
the oil stopper, and then attach the O-ring to the bleed
screw and tighten it until oil flows out to make sure that
there are no air bubbles remaining inside the reservoir
tank.
Air
* Do not operate the brake lever at this time, otherwise
air may get inside the cylinder.
Tightening torque:
0.3 - 0.5 N·m {2.7 - 4.4 in. lbs.}
13.
Wipe away any oil which has flowed out.
One Holland, Irvine, California 92618, U.S.A. Phone: +1-949-951-5003
Industrieweg 24, 8071 CT Nunspeet, The Netherlands Phone: +31-341-272222
* Service Instructions in further languages are available at : http://techdocs.shimano.com
Please note: specifications are subject to change for improvement without notice. (English)
© May 2010 by Shimano Inc. XBC SZK Printed in Japan.
Slightly stiff
Stiff
Oil stopper
O-ring
Bleeding adapter
Bleed screw
O-ring
3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan