Tuned Up - An Experimental Bleed

Calvin might be stuck at home, but he still has plenty of bikes to wrench on! So join Calvin as he goes on an exploratory mission to bleed an older-style Shimano® hydraulic disc brake using Park Tools new Hydraulic Brake Bleed Kit, the BKM-1!
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[@dmitrijvladimirov8696]

Don't actually own hydraulic brakes but watched entire video cuz my man Calvin does stuff very professional

[@Calum_S]

With Calvin using a hedge trimmer, I was worried what kind of bleed video this might be.

[@actonblue2012]

Got to Love the Calvin. Stay safe and thank you for the sage advice.

[@barkstamassi]

We love you Calvin! That was epic! More at home repairs please!

[@weeder609]

High praise for you folks!

[@pauldc779]

Great mechanics and an awesome presenter

[@ballunix]

given Calvin's standard behavior with cable cutters, truly expected the hedge-trimmer to go right through the hose 😊

[@01FozzyS]

Nice Haro,Calvin!

[@charliepi]

Thanks for making this one! I have a pedicab with a reservoir at the brake lever much like this and there aren't very good instructions for how to do a bleed on it. Although it's got a big go-kart brake in the rear, this technique should translate well.

[@thetheflyinghawaiian]

When I saw the thumbnail I was sure this was going to be a rap video.

[@ReaganPatriot]

Calvin " Eminem" Jones

[@benjybluehat]

At last, useful advice for my old Hayes. Cheers Calvin!

[@jameswitte5676]

Where’s your park tool hedge clippers?

[@nigeljohnson8022]

Cheers Calvin, "Fun with bubbles" OH YEAH !!!!!! Stay safe guys

[@frakafrocka]

Too good

[@abelbujorean3201]

Wow, exactly my type of brakes! Great job!

[@PinstripeJim]

Great video as always. Starting to build my collection or Park Tool tools due to this Stay at Home fun. Rebuilding all my bikes. About to get my first bike with hydraulic brakes and this is a perfect video.

[@brandonreimer184]

Great video! I'm sure you could add the old technique of pressuring the system strapping the lever and a quick open close on the caliper bleed port.

[@mannys9130]

That's the most commonly used method, but my favorites are first and foremost top down pressure bleeding followed by down top reverse pressure bleeding (shown here). Top down pressure bleeding is great because you start with a full master cylinder of new clean fluid and you push all the naturally accumulated trash in the caliper directly out the bottom with new clean fluid. It's so fast that all air is pushed out right away. Boom, perfect flush. When that method isn't possible (like here, not really a good way to mount a pressure adapter unless you custom make one) reverse pressure bleeding is my second best. The clutch slave cylinder on 1980s Mercedes and 1980s-1990s BMW cars are EXTREMELY hard to bleed using the pedal pump and bleed screw method. It was impossible for me to do after 2 hours of trying. It took 5 minutes to fully fill and bleed the system by reverse bottom top bleeding with a pump. For filling a new system full of air, it makes perfect sense. Air wants to naturally go up to the master, so reverse bleeding works with that natural flow.

[@simplybananas]

Lol This old house opening was epic!

[@paisfr]

Hello Bonjour , Excellente démonstration , Thank you ☑

[@MangoJim90]

Love this type of bleeding from shimano

[@robertculver3296]

Love the videos, such bike knowledge imparted with great humour.

[@xJuiCYxxJaYx]

Awesome thanks for sharing all your knowledge

[@herosstratos]

Insert brake “blocks“ or install brake disk or before activating the brake lever.

[@ramonmartinez2716]

Calvin only the best

[@bitcanics6892]

This guy Is freaking awesome

[@jefffletcher3178]

Great informative video. I found it a little strange that the rear brake is on the right bar though.

[@Thecrazyvaclav]

It's because they drive on the wrong side of the road, you can cover the rear brake while sticking your arm out doing a left turn

[@johngeddes679]

Mr Jones what is that suspension?

[@dragos2033]

Do You guys still continue the Tech Tuesday?

[@parktool]

We sure do! Every other Tuesday, so be sure to tune in next week.

[@luvjazz22]

Calvin, why don't we see the PB-1 for your nice set of tools?!

[@carolinehix6128]

"Look at that yummy bubble" xD

[@rjg3876]

To Me the big question is where did the old fluid go? Leaking from where

[@mannys9130]

Valid question for sure, although it is normal for fluid level to drop as the brake pads and the rotor wear with normal usage over time. I'm an ex-auto technician, and when a vehicle is brand new with a full reservoir, the wearing out if brake pads will often trigger a "brake" light to display on the dash due to low reservoir fluid level. When the caliper pistons or wheel cylinders are pushed back to their starting point, the reservoir returns to almost full (since the rears are usually not fully worn or fully new anymore.

[@swedishfreestyler8523]

Hi

[@jcsrst]

That was good to see! Not unlike Bleeding motorcycle brakes but those you fill at the reservoir and suck it out through the caliper.

[@brandonreimer184]

That is actually the "proper" technique for these brakes.

[@SagnikDasgupta]

0:50 That chain.... looks... a little... loose?

[@oftankoftan]

I believe it's off the chainrings. Why I have no idea. Maybe he checked the bottom bracket or the cranks.

[@SagnikDasgupta]

@@oftankoftan Has to be it.

[@Flimshots984]

Do you guys sell your products in Singapore , would love to get some if have

[@parktool]

Our products are available in Singapore through Kiat's Marketing: www.kiatsmarketing.com.sg

[@zbynekcodykolacek]

Is it not easier to do it reverse way, top to bottom? So called gravity bleed.

[@parktool]

That was the part that hit the cutting room floor, if those floors exist anymore.

[@denis_roy_7]

Roger Cook (TOH) would disapprove of Calvin’s hedge trimming technique.

[@RAHALions]

I can't believe Calvin is using that "tool" to trim hedges, of all people...

[@newttella1043]

I'm glad I skipped that phase of hydraulic brakes. I always like the secure screw on ports and double syringe of Avids.

[@sameerjain4423]

Please don't cut plants because Plants given life to us and every livingthing on this planet "Earth"

[@Manetty6]

hmm for this style of brake levers there's a designated clamp to work with: si.shimano.com/pdfs/ev/EV-TL-BT03.pdf

[@jimsec7344]

2

[@h0udinl]

Hi