Spurgo freni MTB idraulici Tutorial 11 ERRORI | Shimano Deore SLX XT XTR | MTBT

Spurgo freni MTB idraulici Tutorial 11 ERRORI | Shimano Deore SLX XT XTR | MTBT


hello everyone and welcome back to a new video
tutorial today we will talk about the bleeding of hydraulic brakes Shimano. If you use
the bike a lot, the bleeding should be done every 12 months, otherwise every 18 months.Shimano uses a mineral oil that has the advantage of being hydrophobic. The difference from the hydro scopic like those used by sram, is that it does not absorb humidity and is more stable over time You will find the details about the bleeding kit of shimano in the description of the video before starting, I would like to remind you that mtbtshop.com is a free portal of
buying and selling bycicle and accessories. You can publish all the items you want about the world of cycling
or search for articles and accessories you are looking for.
The bottle of shimano mineral oil is 100 milliliters and costs around 8 euros
while the bleeding kit for shimano brakes contains a syringe and a straw
and a funnel, the cost is around 16 euros as said in the description you will find i
links. In this video I will also try to highlight the 11 most common mistakes
that take place when practice this type of operation
the first for example is that of not have your bicycle air-conditioned what it is
you mean you have the bicycle in the garage a minus 3 degrees
take it home and start right away the operation is not really good because
cold oil viscosity is different from that of hot oil, therefore
it is better to acclimatize the bicycle, only after you should start
the operation make sure you have a bleeding block
which has the thickness to put inside the calipers this will avoid
that the brake caliper is sunk during the purge operation. The
transport lock that it this tool it is used for the transport of
bicycles and that is inserted in the pads when the wheel is out, is not good, and this is the second mistake because it has the wrong size. You see
the difference? Third mistake, the pliers are not centered and the pistons are not
properly working, because they are blocked by the dirty I made a video about it, if
you are interested click on the link above fourth error don’t use old and very used pads, otherwise after the beeding, the brake lever could sink too much. Having the new pads instead the sinking
of the brake lever will be optimal. The fifth mistake is to have a wrong
bicycle position The positioning is depending on whether you are bleeding the front brake and the rear one
this is the correct position for the front brake. For the rear brake bleeding instead the position will be this. The position of the bike is
extremely important to facilitate the rising of the air bubbles
from the braking system plus the bike it is vertical and better the bubbles will rise. The bike must be clean, especially the areas around the pistons and brake levers. Bleeding accessories therefore they must be cleaned. Every time that you use them, be sure to clean them up before putting them away.
So let’s start with purging the front brake. I removed the pads, pushed the pistons inside, and I have inserted the bleeding block. Then you must remove the clamp and then bring it externally so that the wire turns out
as vertical as possible we bring the brake lever in the horizontal position now we open the cap which is called
EBT, it is a small plastic cap and it is very delicate so do
be careful not to force too much now using the glass we go to
plug the hole. Make sure it is well capped and insert the
glass turning it there is a thread you insert it
slowly gently without forcing And now pour a little bit of
oil in not too much remove the plastic plug completely dip the straw into the bottle and vacuum
about 30 ml of oil Now, put the syringe upright and
push the plunger to pick up all air bubbles as much as possible you see slowly the oil rises. The air should be gone. Ok the air has run out and now I’m going to
insert the tube in here I block it with this. This is completely down. I blocked it. And now with a key of 7 I’m going to open the valve but not
too much. At this point I read the carpet here it is, not too much at this point I remove the plug the reason why we put
the oil is because now I will suck it up slowly so that he bubble comes out, and I will also suck the oil that is above. You see the bubbles slowly arrive? At this moment there seem to be no more bubbles in circle. Well, now the bubbles are finished. There is only oil and I start pushing. Another mistake is
to push the oil while holding the syringe downwards it must be always high so that the bubbles stay above near the plunger.
So I push, clearly the valve is tight and the harder it will be to push
the oil inside slowly the glass fills up and here we go. Another common mistake is to push all the oil into it. In this way we risk inserting air, so don’t push till the end now close the valve and remove the tube the little oil left inside the syringe and in the tube is clean it is not contaminated, so I’ll ut it back in
bottle look how the oil is dirty and how much
is contaminated, incredible now, to avoid disasters, I get this oil
with the syringe most of this oil I don’t remove it completely and I don’t close it again, but I leave a bit in. This contaminated oil does not have to be reused do not disperse it in the environment but bring it to the nearest ecological island if you don’t know where it is, ask in your municipality at this point most of the
people stop and remove the shot glass and instead this is an error. Open completely the brake lever thus increasing the
volume. This operation is for completely free the system from
air bubbles then tap to the implant to the tube, to the pliers
try to recall all the bubbles air outside the system patter
a bit Now I close and start to staple a little bit and keep tapping make ste blessed bubbles rise and
stapled. now it’s time to close the shot glass with the cap and unscrew it make sure the cap is closed
unscrew and that’s it I put it in the cup holder Now it’s time to put the EBT cap back on last error eleventh error the cap
does not stand upright because you would still create air bubbles
but it goes obliquely into this way, cut, and then go put it
vertically in this way the bubbles will not enter
in the brake system reapply the gripper mat use a degreaser to clean the
parts that you have contaminated with oil and and reposition the brake lever as
it was before all the assembly operations of the
brake caliper and all the rest I avoid them for a matter of time
on my website www.mountainbikingtube.com in the pdf section you will find
the free downloadable checklist which explains step by step the operations from
make and mistakes to avoid I hope you understand the principles of
base and the 11 mistakes to avoid with this I greet you and see you at
hello next