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-   -   Clutch master cylinder leaking (https://www.rx8club.com/series-i-trouble-shooting-95/clutch-master-cylinder-leaking-166228/)

cjkim 02-06-2009 06:02 PM

Clutch master cylinder leaking
 
So while installing my clutch bracket yesterday, I must have damaged the clutch master somehow... sad :banghead:

So now, brake fluid is slowwwly leaking from the master (where the push rod goes through)...

Any suggestions on what to do? Would I have to replace the master or is there a way to fix this without replacing?

Also, if I end up needing to replace, any estimates on the cost + labor?
Thanks... Sad :squint:

Razz1 02-06-2009 06:06 PM

Its the same fluid as your brakes.

Hurry get it repaired.

cjkim 02-06-2009 06:08 PM


Originally Posted by Razz1 (Post 2855649)
Its the same fluid as your brakes.

Hurry get it repaired.

Yeah, I know it's the same fluid, and I won't be driving it till I get this fixed.. just wondering how I should go about this

Razz1 02-06-2009 06:13 PM

PM Charles R Hill

mazdaverx7 02-07-2009 05:50 PM

i would order an oem slave cylinder rebuild kit and replace the piston. most likely all you damaged was the seal on the piston and since the seal is integrated into the piston, you must replace the piston. for best results, you should hone the slave cylinder when replacing the piston.

cjkim 02-07-2009 06:00 PM


Originally Posted by mazdaverx7 (Post 2856637)
i would order an oem slave cylinder rebuild kit and replace the piston. most likely all you damaged was the seal on the piston and since the seal is integrated into the piston, you must replace the piston. for best results, you should hone the slave cylinder when replacing the piston.

thanks for the advice, but i already bought a replacement for pretty cheap from a member.
but is there a reason you mention the slave cylinder when i'm just replacing the master? or was that a typo?.. or am i just confused

mazdaverx7 02-08-2009 05:29 AM

no, it was my typo. i meant master cylinder, not slave cylinder. my fault. i mentioned the rebuild kit because its usually a lot cheaper. at any rate, buying a new master cylinder was a good choice. it'll save time and in the long run, the peace of mind knowing the part is new is a comforting feeling.

cjkim 02-08-2009 08:05 PM

ok guys... i'd appreciate a little input as I've never done this before.
it looks pretty straightforward, but just incase I miss a step...

1. open reservoir, seal with latex glove, close reservoir
2. replace old bleeder screw with speedbleeder (thought I might as well replace it now) located behind oil filter
3. open reservoir, drain remaining fluid (shouldn't be much)
4. unscrew the three bolts holding the clutch bracket from under dash, undo the two lines from old master, remove old master
6. insert new master and reattach lines, bolt up onto clutch bracket
7. flush fluid through until no air pockets are found
8. close speedbleeder and reservoir, fill reservoir to max
9. have a beer

am i missing anything or anything to add?

laythor 02-08-2009 08:29 PM

you forgot step .5

start with a beer

cjkim 02-08-2009 08:44 PM


Originally Posted by laythor (Post 2857881)
you forgot step .5

start with a beer

noted :)
anyone else?

cjkim 02-09-2009 02:29 PM

bump bump
any inputs?

mazdaverx7 02-10-2009 08:58 AM

sounds like you got the procedeure down to replace it. though i dont fully understand this step: 1. open reservoir, seal with latex glove, close reservoir

maskedferret 01-13-2011 03:23 PM

1 Attachment(s)
cjkim, how did the fix install on this go? No more leak?

I heard some strange popping noises on my way to work today and checked it out to see the leak below (at least the bracket seems solid still). I have no idea how long it's been like this let alone how severe. I haven't noticed an obvious drop in fluid level, so I'm hoping it won't continue after I wipe it clean before going home tonight.


SuperBlue fluid - easy to spot:
Attachment 249491

DocBeech 01-13-2011 09:44 PM

sealing the brake cylinder reservoir with a glove prevents the brake fluid from flowing while he does the work.

Also you can bleed to the hydrolic clutch cable. This will keep you from having to bleed the entire system.

Qonjin 12-01-2022 10:42 PM

Is there an thread on Power Brake Boosters? Mine is leaking and I think I need to replace mine. Thanks



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