Bleeding Front Brakes

[grog]

Replaced whole brake system. Had all these wonderful ideas how to bleed.vac bleeder, syringe to push from bottom up.Never used them. I filled master cylinder, just watched little bubbles up thru hole. Occasional little pump of lever. I figured every bubble was getting me closer. Bled master connection. Tapped every union with spanner, bubbles kept rising. Eventually a bit of lever pressure. Bled both calipers only 3 or 4 times. Today, lots of pumps on lever, more bubbles until none. Lever feel now perfect. Patience needed but worked. 👍Now to do rear, re paint, clean out caliper, fit braided hose.

[Irish in Oz]

Just done a full rebuild on my brakes front and back, no problems at all, rear did take a few more pumps to get going.

[Hooli]

As I've got older & lazier I've started leaving the bleed nipples open, filling the reservoir and going for a brew. Once I get back the system has filled on it's own, then it's a quick bleed as normal & it all works.

[grog]

First ride with new brakes today. Well worth the effort. Not totally bedded in yet but so nice. 👍

[Eric GSX1400K3]

Well done mate, they look good.  Fully agree on the patience when bleeding, did same with mine, feel so good now, back to 2 finger braking.

[just bandits]

I know this is a relatively old post, but just for future ref. if anyone else is doing it, without teaching anyone to suck eggs, here's the drill.
I have done literally hundreds & hundreds, this works FIRST TIME, EVERYTIME.
1. Fit all the hoses & fill res. with fluid.
2. Pump the lever its full travel 5 or 6 times then hold it in.
3. Crack the banjo bolt at at the master cyl. still with the lever in. Loads of frothy fluid will come out (Obviously have a nice absorbent cloth under the banjo bolt.) Then lock off the banjo bolt.
What this does is bleed out the large blob of air that is sitting at the end of the hose & around the master cyl. The piston is so small it struggles to push all that air, what is basically about 3 feet 'downwards' when the laws of physics want it to come to the top.
4. Repeat 2 & 3 a few times.
5. Bleed as normal at the calipers, obviously making sure you keep the res. topped up.

This works with fronts, clutch & rear.
Admin feel free to put this somewhere 'sticky' if you wish
Cheers Julian

[grog]

Thanks Julian. Totally agree, banjo is first bleed. Rest just follows. Ive also found, after time, a re bleed also gets results, i mean a couple of weeks or so. Just to be perfect i mean. Your input is appreciated, Thank You. 

[grog]

After my brake rebuild, thought i had perfect solid lever. Still had slight doubt it could be better.So now, months later, Steve Porter said about tapping banjo unions with spanner etc. Ive been doing this now 2 months. Every time near bike, tap those unions. So, this morn, hopped on, brake lever now rock solid, mustve finally sent those last bubbles up top. My ride this morn, now perfect. So bloody good. Ride home this arvo, bloody good brakes, best its ever been. 

[Hooli]

Brakes only slow you down   

[grog]

Mine sure do now Hooli, not radials power but just so happy with them. No one will ever tell me 6 pots are no good, they just need a bit of patience and cleanliness. I dont know if fitting braided lines helped,no idea really, all i can comment on is my results. I still miss the Brembos on Diavel, amazing stoppers. 

[Hooli]

Having ridden 14s with & without braided lines back to back, I can say I've noticed more difference with different pads than lines.

[Speedy1959]

Totally agree Mr Hooli,
I reaslly rate SBS pads...
Otherwise we are aligned...

S