What size spanner for rear brake cylinders?

[haynes]

Ive been using a 7mm, as its the nearest fit i have, but its a bit sloppy. I think i ought to invest in the correct size to avoid any roundings off. So what is the correct size for the rear wheel cylinder bleed screw?

My square brake adjuster spanner has something on the other end but its just too small.

Also, these things seem so fragile, how do you know youve nipped em up tight enough?

Edited by haynes on Saturday 13th June 20:27

Edited by haynes on Saturday 13th June 20:43

[Dino42]

Unfortunatly they vary in size, the newer ones tend to be metric. Only way to be sure is measure accuratly.
Agreed they do seem rather fragile - how tight? well until they don't leak!
Seriously though I've no idea of the torque figure but it's not that tight really.

[Rotary Madness]

I think mine was 7-8mm, but i got so pissed off with the damn things i used a pair of pliars in the end. They rust so fast you'll need to use pliars to get them off next time anyways.

[DanGT]

When doing mine I always clean the area then remove the ajuster totaly and copper greae it then put back. Dont over grease as brake shoes dont work well if greased. It a pain to do the first time but then easy from then on. I got a brack spanner that fits well but never looked at the size. I will try and look at it tonight.