News:

This forum is run by RPM and donations from members.

It is the donations of the members that help offset the operating cost of the forum. The secondary benefit of being a contributing member is the ability to save big during RPM Holiday sales. For more information please check out this link: Membership has its privileges 

Thank you for your support of the all mighty FJ.

Main Menu

break master cylinder

Started by loki, June 05, 2012, 03:43:10 PM

Previous topic - Next topic
Print
Go Down Pages1
User actions

loki

June 05, 2012, 03:43:10 PM
hi guys iam having a small problem with my master cylinder on my 88 3cv it seems to be leaking from somewhere but i have only had a quick look and not sure where to start with it, is it a common problem? it seems to be around the bottom of the res neat the break switch when driving it ends up all over the right side of the plastics on the inside.......... :dash1:
dream as if you'll live forever live as if you'll die today

Harvy

#1
June 05, 2012, 05:04:35 PM
Quote from: loki on June 05, 2012, 03:43:10 PM
hi guys iam having a small problem with my master cylinder on my 88 3cv it seems to be leaking from somewhere but i have only had a quick look and not sure where to start with it, is it a common problem? it seems to be around the bottom of the res neat the break switch when driving it ends up all over the right side of the plastics on the inside.......... :dash1:

Not really a common problem Loki. If overfilled, and the rubber seal on the cap is old, it could be weeping from the top, or it may be the copper washers on either side of the banjo where the line is attached to the body of the master.
Only other places it can leak is if the sight glass is not sealed, or leaking past the piston seal.
Clean it really well with some soapy water and a soft brush (like a brush and dustpan brush). Then dry it with your wifes/girlfriends hair drier. now apply the brakes a few dozen times and spot where the leak is from.

Harvy
FJZ1 1200 - It'll do me just fine.
Timing has much to do with the success of a rain dance.

loki

#2
June 06, 2012, 12:00:26 PM
Quote from: Harvy on June 05, 2012, 05:04:35 PM
Quote from: loki on June 05, 2012, 03:43:10 PM
hi guys iam having a small problem with my master cylinder on my 88 3cv it seems to be leaking from somewhere but i have only had a quick look and not sure where to start with it, is it a common problem? it seems to be around the bottom of the res neat the break switch when driving it ends up all over the right side of the plastics on the inside.......... :dash1:

Not really a common problem Loki. If overfilled, and the rubber seal on the cap is old, it could be weeping from the top, or it may be the copper washers on either side of the banjo where the line is attached to the body of the master.
Only other places it can leak is if the sight glass is not sealed, or leaking past the piston seal.
Clean it really well with some soapy water and a soft brush (like a brush and dustpan brush). Then dry it with your wifes/girlfriends hair drier. now apply the brakes a few dozen times and spot where the leak is from.

Harvy

thanks mate, the top and the banjo was the first thing i checked, i had a good look today i think its the piston seal its seeping out from, got hold of an r6 front break master cylinder and res today from a mate so it will be getting put on at the weekend with the hard luggage  :good2:
dream as if you'll live forever live as if you'll die today
Print
Go Up Pages1
User actions