73 Honda CB750 Custom Build Part 38 - Brake Master Cylinder

Rebuilding the master cylinder and bleeding the front brakes.

[GaRbAllZ]

Great job Dino, You make it look so much easier than it really is and without cussing!

[rayworx]

When bleeding the brakes (an old tip from American Honda... yes I was a tech back then) Do NOT pull the brake lever all the way to the handlebar when bleeding the brake. I tie a shop rag onto the grip and place the knot between the grip and the lever. Pull the lever til it touches the knot but no farther. Keeps the seal from going farther than needed.

[scoop-no]

Thank you Dino. Your CB750 videos have been extremely helpful. You are a legend.

[pawetokarski]

Nice to watch Your movies. I hope some day I will buy CB750 and rebould it. Best regards from Poland!

[keepitrunning]

I tend to use a syringe to do my brakes, saves a lot of pumping. Either pump fluid up into the line like the man with the turkey baster, or draw fluid down from the master cylinder, saves a lot of work.

[faizmurtaza]

Thanks man
After few hour struggling bleed my brake..but when saw ur video especially the bubble in master pump tips make my bleed work less then 5 min...

[bobbyc.]

Here's a hack a mechanic taught me years ago. He took a large turkey baster and attached a clear tube to it just like the one you used here, sealing the connection with alternating layers of silicone and electrical tape. You use it by sucking up some fluid, then push the tube onto the bleeder and sqeeze the bulb. It forces the fluid up the line and fills the master cylinder. I've used this method on many bikes. It works well.

[ronicard]

Nice job with the video, Dean! Getting close to being a rider (a legal one!)

[fdavid]

Thanks for posting the video. Now I have my front brakes working again.

[wswan]

Another trick is once bled..cable tie lever overnight, any remaining air can slowly work uts way back to the mc overnight

[napolianwas]

you can seat the first seal onto the spring and then install.

[Stressboy]

Dino looking forward to seeing you put on the hand grips I want to replace mine but just not sure how to do it

[MrFreakwent]

Have you ever tried pushing the caliper piston back while opening the bleeder before emptying the lines to get all the gunk out of the caliper ? ?

[daveco]

I'm still new to this stuff. Does the hole in the banjo bolt have to line up perfectly with the opening in that metal piece that attaches to the hydraulic line? Is there any trick to that? And what size tube should I buy to bleed the brakes?

[spaceoner]

Short strokes will get the job done quick!

[delmascriss]

way good info. tell me more about jis.. screwdriver. ., .?...

[roymcmasters]

Did not see the part where you took it apart

[davidgyawn]

great video. Here is a question I've often thought of... Why are brake reservoirs of different sizes? I have a Yamaha fz1 and it has the smaller rectangle one. But is see other bikes with big round ones. Ane they are downright ugly. why the difference?

[apx]

nice job. how do you get the feel to tighten things without using a torque wrench? I never feel confident in doing it in case I strip the threads, or don't do it right enough. especially the banjo bolt.

[jaflolara]

Looking shiny that CB!
Dino, what are the plans for the gas tank? that patina looks good