Help Please Brake Bleeding Issues.

[xbally]

Not one of my thumpers but on my 750 Monster double thumper. It's a single piston Brembo underslung type of caliper on the rear. It's always been "notchy" so I've tried to bleed it today and can't now get any pressure in the system. I've tried removing the caliper from its mount and raising it up ,bleeding from the master banjo all to no avail. Piston seems to be pushed back in its bore and no sticking / disc overheating problems. Any ideas or tips please?

[themoudie]

Aye xbally,

I would suggest leaving the caliper low down and raising the master cylinder, with the rod compressed, overnight and see what happens!

Hopefully, this will dislodge the air bubbles in the system. But the fact that your mention the action being "notchy" would make me suspicious that the old brake fluid needs draining and master cylinder cleaning of any gritty bits and a new set of seals, before re-assembly and filling with new fluid.

Having never tampered with Ducati V twins and only singles drum brakes makes me very unqualified on this subject!

Good health, Bill

[xbally]

Thanks Bill.

I'll give that a go.

Just want to get the rear brake working for the moment and afterwards I can get the whole system overhauled -as you say it seems to need it.

[CrazyFrog]

I have a cheap vacuum pump brake bleeding kit from eBay which has transformed the whole bleeding experience for me...

[SteveC#222]

Have you tried reverse bleeding the brakes? It's the way I do it.

https://www.youtube.com/watch?v=6UCNWfA7dVs

[johnr]

ive got and frequently used a vacuum bleed kit to some good effect.

[Ian]

I use a cheap plastic syringe connected to the bleed nip ple via a piece of rubber tubing. This works for me.

[mthee]

I have a cheap vacuum pump brake bleeding kit from eBay which has transformed the whole bleeding experience for me...

Cheap? You have my full attention! Any chance of a link?😃

[Ian]

Is this the one?

https://www.ebay.co.uk/itm/HAND-VACUUM-PUMP-HELD-BRAKE-BLEEDER-TESTER-SET-BLEED-CAR-MOTORBIKE-BLEEDING-KIT-/391718817400?_trksid=p2349624.m46890.l49292

[Moto63]

I have a  bleeding kit from eBay which has transformed the whole bleeding experience for me...

Now , now Pete. No need to get so agro. Martin was only asking a question 🤣🤣🤣🤣

[johnr]

Is this the one?

https://www.ebay.co.uk/itm/HAND-VACUUM-PUMP-HELD-BRAKE-BLEEDER-TESTER-SET-BLEED-CAR-MOTORBIKE-BLEEDING-KIT-/391718817400?_trksid=p2349624.m46890.l49292

thats the one, ive used it a lot more than i thought it would. also used it on my van!.

[iansoady]

I have one as well and it was the only effective way of bleeding the linked brakes on my Guzzi V50. The ebay ones aren't particularly well made (at least mine wasn't) but fine for occasional or even one-off use.

[CrazyFrog]

Is this the one?

https://www.ebay.co.uk/itm/HAND-VACUUM-PUMP-HELD-BRAKE-BLEEDER-TESTER-SET-BLEED-CAR-MOTORBIKE-BLEEDING-KIT-/391718817400?_trksid=p2349624.m46890.l49292

Yep, that's it!

[xbally]

Thanks to all....Update: By crimping the hose close to the master and bleeding from the banjo at the master and then from the caliper I was eventually able to get pressure at the lever. However the
 caliper pistons are definitely sticking as I've just been for a quick run-and even without using the rear brake the disc is much hotter than the front. I struggled to get the caliper back on the disc -pistons didn't want to move back. Martin

[xbally]

Well now I've got a puncture as well-happy days. Think I'll get a syringe kit which should make life easier in the future. These bikes also have a hydraulic clutch.