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Slave cylinder snapped from clutch fork. How to fix

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Old Oct 31, 2019 | 04:11 PM
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TOB broke apart. Ideas on how to fix

Went to take my son out for Trick or treating, backing out in reverse, and suddenly I heard a snap. Opening my hood it appears the connector between the slave cylinder and the clutch fork is snapped. So right now the clutch pedal is stuck in position but I can still shift into all gears. How screwed am I? Do I just swap the slave out? Can it somehow be hammer back in?? See the pic I have attached. I’ve also included a photo from STM with the piece that snapped out circled in red.
Thanks for any help

UPDATE: See last posts for resolution





Last edited by Welcome2GoodBur; Dec 1, 2019 at 12:06 PM.
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Old Oct 31, 2019 | 04:54 PM
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All I can tell from the photograph is that the slave cylinder is overextended. My guess is that the throw out bearing has detached from the clutch cover. Is the clutch pedal on the floor?
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Old Oct 31, 2019 | 05:01 PM
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Originally Posted by barneyb
All I can tell from the photograph is that the slave cylinder is overextended. My guess is that the throw out bearing has detached from the clutch cover. Is the clutch pedal on the floor?

When it snapped, it went right to the floor. The piece that is circled is fully detached from the clutch fork. Hard to tell from the photo I posted because I tried to push it back in. Now the clutch pedal is stuck at about 80-90 % up (closer to its resting position) and far away from the floor. It won’t let me push it in at all. Gonna take another photo in a minute

Last edited by Welcome2GoodBur; Nov 3, 2019 at 12:00 PM.
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Old Oct 31, 2019 | 05:12 PM
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If it really is the slave then slap on a new one, bleed, and good to go. Can the old one be reassembled? I suppose but where do you get the part that is broken?

With a slave cylinder in hand, if you pull off the rubber boot, you see the aluminum piston, the push rod comes off with the boot, it is a separate part.
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Old Oct 31, 2019 | 05:20 PM
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Originally Posted by barneyb
If it really is the slave then slap on a new one, bleed, and good to go. Can the old one be reassembled? I suppose but where do you get the part that is broken?

With a slave cylinder in hand, if you pull off the rubber boot, you see the aluminum piston, the push rod comes off with the boot, it is a separate part.



Here’s what snapped off
if I just need to replace the slave then great that’s easy enough to do!
I actually just had to replace the hardline going from the slave to the master a few months ago since it was leaking bad. Just ordered a new stainless line from STM so I can replace both items together.
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Old Oct 31, 2019 | 05:39 PM
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Sorry, but that is not snapped off. I have a brand new slave cylinder on the bench here with me and it looks the same. That is just where the push rod presses against the throw out arm. Most likely the thow out bearing came out of the clutch cover. Its the bane of pull type clutches. Others can chime in but probably what is required here is pulling the transmission. If you have to do that, might as well figure on a new clutch (or at least a new clutch disc) and a monoloc.
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Old Oct 31, 2019 | 05:50 PM
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Originally Posted by barneyb
Sorry, but that is not snapped off. I have a brand new slave cylinder on the bench here with me and it looks the same. That is just where the push rod presses against the throw out arm. Most likely the thow out bearing came out of the clutch cover. Its the bane of pull type clutches. Others can chime in but probably what is required here is pulling the transmission. If you have to do that, might as well figure on a new clutch (or at least a new clutch disc) and a monoloc.
Yeah that was what I was thinking after looking at the photo on STM.
Sucks, I have a monoloc in there right now attached to an ACT HDSS clutch with probably 30k on it. Replaced the flywheel with an ACT lightweight at the same time. If I’m pulling the tranny I’ll def get a new clutch, might as well do it while in there. Thanks for confirming!
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Old Oct 31, 2019 | 06:02 PM
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I wouldn't say confirmed but the most likely suspect. If the throw out bearing did come out with a monloc its the first I ever heard of. Anyway, I'd suggest putting the car on stands and pulling the rubber plug located at the bottom of the bell housing for a peek. It could possibly also be a broken throw out arm (unlikely but possible). The transmission would have to come out for that too. Or maybe a trashed clutch. Still, the same story.

If the throw out bearing did come out of the clutch you may try snapping it back in. Put a large socket over the end of the throw out arm and give it a good yank towards the driver's side fender.

Last edited by barneyb; Oct 31, 2019 at 06:34 PM.
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Old Oct 31, 2019 | 07:01 PM
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Originally Posted by barneyb
I wouldn't say confirmed but the most likely suspect. If the throw out bearing did come out with a monloc its the first I ever heard of. Anyway, I'd suggest putting the car on stands and pulling the rubber plug located at the bottom of the bell housing for a peek. It could possibly also be a broken throw out arm (unlikely but possible). The transmission would have to come out for that too. Or maybe a trashed clutch. Still, the same story.

If the throw out bearing did come out of the clutch you may try snapping it back in. Put a large socket over the end of the throw out arm and give it a good yank towards the driver's side fender.
Agreed. I'd be interested in an update on this.
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Old Oct 31, 2019 | 07:10 PM
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Originally Posted by DontStopMe
Agreed. I'd be interested in an update on this.
I’ll get it up on jacks tomorrow or Saturday. I’ve got a buddy with an auto shop so If I have to take it there to pull it I will. Will definitely update as I find out more!
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Old Oct 31, 2019 | 07:16 PM
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The TOB failed, came out of the clutch cover, or the cover broke. That's the only way the clutch fork is pushed all the way over.
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Old Nov 1, 2019 | 08:57 AM
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Originally Posted by DontStopMe
Agreed. I'd be interested in an update on this.
Are you Paul from Boosted Films? I'm literally watching your Youtube video right now to prep myself for pulling that Tranny!
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Old Nov 1, 2019 | 09:54 AM
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Originally Posted by Welcome2GoodBur
Are you Paul from Boosted Films? I'm literally watching your Youtube video right now to prep myself for pulling that Tranny!
Yup, thats me.
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Old Nov 1, 2019 | 11:01 AM
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Every aftermarket TOB I've used pops out despite a Monoloc and clutch fork stop. . It's cost me many a track day LOL.
I used an OEM TOB this last time. So far, so good.

Sounds like the same that's happened to you.

You can look through the inspection cover to confirm.
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Old Nov 1, 2019 | 11:38 AM
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MAP sells the OEM TOB cheap.
https://www.maperformance.com/produc...o-8-9-mr145619

I had it happen earlier this year as the TOB came apart so likely not clutch slave related. When you get it on jack stands just pull the round rubber plug on the bottom and take a peak. It will be very easy to tell if it just popped out or the TOB failed. I contacted ACT since I used their TOB and they sent me a new disk for free since I had to pull the tranny and pay for a new OEM TOB.
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