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Clutch bleeding procedure
Posted: Mon Dec 31, 2012 8:34 am
by Baddog
I checked the sticky and most google searches came up with WRX's.
I am using the factory setup still as far as the master and slave go. So I was wondering the proper procedure on how to bleed it. I have tried using the bleeder screw and pushing down on the clutch after cracking the bleeder open. Then closing the bleeder and lifting up on the clutch pedal. After 2 hours there is still air in the line and the pedal is mushy.
Re: Clutch bleeding procedure
Posted: Mon Dec 31, 2012 8:50 am
by mike-tracy
I don't know the "official" way, but after I've done what you did, I push the clutch fork back against the slave cylinder. This shoots micro bubbles that were trapped in the slave cyl, back into the reservoir. Takes a couple times to get it where I like it, then of course you have to pump the pedal back up.
Re: Clutch bleeding procedure
Posted: Mon Dec 31, 2012 8:59 am
by Baddog
So hold the clutch fork towards the back of the car while doing the bleed procedure?
Or find something to jam it?
Re: Clutch bleeding procedure
Posted: Mon Dec 31, 2012 11:34 am
by mike-tracy
Nope, I push the clutch fork against the slave cyl, and let go. You'll hear fluid and perhaps air bubbles jetting towards the reservoir. Let the slave's rod extend and press the fork again. x Several times.
Another method I've used (bleeding these hydro trannys can be a real b#!$^), is unbolting the slave cyl, putting a c-clamp loosely on the slave, elevating the c-clamp + slave cyl with the bleeder facing up, and doing a normal bleed.
Re: Clutch bleeding procedure
Posted: Mon Dec 31, 2012 11:37 pm
by Baddog
So the bleeder screw must be open while pushing the fork back correct? Just wanna make aure im doing it right this time around.
Re: Clutch bleeding procedure
Posted: Mon Dec 31, 2012 11:39 pm
by mike-tracy
No, bleeder screw should be closed when pushing on the clutch fork. All air bubbles will be going back into the reservoir and dissipating there.
Re: Clutch bleeding procedure
Posted: Tue Jan 01, 2013 7:14 am
by Baddog
Got it. Clutch slave is leaking. Time to replace with wrx
Re: Clutch bleeding procedure
Posted: Wed Jan 02, 2013 7:20 pm
by Legacy777
The clutch damper is what makes bleeding these hyd clutches a pain in the butt. You can remove it and just run a custom SS braided line from the clutch MC to the SC. That's what I did, and am very happy with the clutch feel.
Re: Clutch bleeding procedure
Posted: Thu Jan 03, 2013 8:25 pm
by Baddog
Can you just run a WRX clutch line on the Legacy SS stuff?
I replaced the leaking slave today and pedal still will not return or stiffen. I used a vacuum bleeder no luck
Re: Clutch bleeding procedure
Posted: Fri Jan 04, 2013 6:41 pm
by Legacy777
If the clutch line will bolt up to the master and slave, then yes. There are some differences in how the lines are routed and what type of connections they have (flared or banjo), so you'll need to check the length and connection type.
Re: Clutch bleeding procedure
Posted: Fri Jan 04, 2013 6:58 pm
by Baddog
I will do an SS line like some of you did. Was there a Write-up somewhere? I saw a parts list.
Re: Clutch bleeding procedure
Posted: Fri Jan 04, 2013 8:00 pm
by Legacy777
Scroll to the bottom of the transmission section for my swap parts list. It'll have what I used.
http://www.surrealmirage.com/subaru/swa ... ansmission
Re: Clutch bleeding procedure
Posted: Fri Jan 04, 2013 8:46 pm
by kimokalihi
I could be wrong but I think the wrx line won't fit due to different banjo bolt sizes. You don't have to replace the line. Just bend the curvy hard line a little to get it to extend up to the master cylinder. That's what I did when I removed my clutch damper and it worked fine like that for 2 years and then I bought an ss gc clutch line. The banjo bolt that came with it was the wrong size so I had to reuse my stock bolt.
Re: Clutch bleeding procedure
Posted: Fri Aug 23, 2013 11:45 pm
by CFK
Ya, What a C(_)NT to bleed
I Bought 2 SS lines, got it all connected. Having trouble bleeding it so im gonna just remove that Damper as well
