Honda-SOHC

SOHC.co.uk Forums => CB500/550 => Topic started by: MIKE550/4 on July 25, 2013, 09:28:27 PM

Title: getting brake and master cylinder back to original
Post by: MIKE550/4 on July 25, 2013, 09:28:27 PM

hi all

when I got this bike it had a non original master cylinder on it, I now have the parts to change it back.

bit stuck on the switch , how does it go on the original lever... anyone supply a pic or diagram

this is what I have

(http://i156.photobucket.com/albums/t6/mike070868/PICT0067_zps40dbf33f.jpg) (http://s156.photobucket.com/user/mike070868/media/PICT0067_zps40dbf33f.jpg.html)
(http://i156.photobucket.com/albums/t6/mike070868/PICT0066_zps69cbbb58.jpg) (http://s156.photobucket.com/user/mike070868/media/PICT0066_zps69cbbb58.jpg.html)
(http://i156.photobucket.com/albums/t6/mike070868/PICT0065_zps901cd94e.jpg) (http://s156.photobucket.com/user/mike070868/media/PICT0065_zps901cd94e.jpg.html)

Title: Re: getting brake and master cylinder back to original
Post by: tom400f on July 25, 2013, 09:35:56 PM

I assume it doesn't. If its like the 400F then the switch is in the union between the upper and lower hoses, underneath the headlight... ?

Title: Re: getting brake and master cylinder back to original
Post by: mickwinf on July 25, 2013, 09:39:51 PM

+1 with Tom it is a different arrangement on the original and screws into the joiner on the bottom yoke. I might have one if you need it.

Title: Re: getting brake and master cylinder back to original
Post by: LesterPiglet on July 25, 2013, 09:41:04 PM

Buy a nice new repro from Silvers for 29 quid.

Title: Re: getting brake and master cylinder back to original
Post by: MIKE550/4 on July 25, 2013, 09:53:09 PM

Quote from: LesterPiglet on July 25, 2013, 09:41:04 PM

Buy a nice new repro from Silvers for 29 quid.

but I already have one ?

Title: Re: getting brake and master cylinder back to original
Post by: mickwinf on July 25, 2013, 10:10:52 PM

A rebuild kit is about the same price and not always successful, depends on how original you want it to be. I have the repro on my 500 and it works fine. will still need separate brake switch though.

Title: Re: getting brake and master cylinder back to original
Post by: MIKE550/4 on July 25, 2013, 10:22:24 PM

I have the m/c rebuild kit not a problem

I have the switch , what I cant decipher is how they join, hence after a diagramn :)

Title: Re: getting brake and master cylinder back to original
Post by: LesterPiglet on July 25, 2013, 11:04:38 PM

The original switch is not part of the master cylinder assembly. It is a standalone switch that attaches to the lower yolk.

http://www.cmsnl.com/honda-cb550f2-super-sport-550-four-1977-england_model17121/partslist/F05.html#results

Title: Re: getting brake and master cylinder back to original
Post by: matthewmosse on July 25, 2013, 11:11:17 PM

flexi pipe master cylinder to bottom yoke then a junction with the switch which I think is a hydraulic pressure swich and connect to the wiring. The junction block then goes flexi line then steel for the last bit I belive originally. My bikes have genrally had all that removed in place of a single braided hose and the pressure swich to activate the brake light is a special kind of banjo bolt that adds the switch to the banjos functions. My sidecar has the junction with switch still fitted on bottom yoke with braided hose above and below.

Title: Re: getting brake and master cylinder back to original
Post by: mickwinf on July 26, 2013, 04:29:42 PM

here is a couple of pics, first one from front my finger pointing to switch, second pic from behind, wiring goes into harness in headlamp shell ( I think)

Title: Re: getting brake and master cylinder back to original
Post by: mickwinf on July 26, 2013, 04:31:28 PM

oh and pic of David Silvers master cylinder