Clutch slave cylinder failure
#1
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Clutch slave cylinder failure
So my clutch slave just failed yesterday. It was a rebuilt unit that has been on there for about 15K miles. I was driving home and the clutch stopped working. The master cylinder is out of fluid, no leaks anywhere down to the slave cylinder, fluid leakage evidence on the boot.
So I am probably going to get a kit and rebuild it. It is $8 at the local Auto Zone (in stock). Before I do, does anyone have any ideas on a mode durable solution? I have read up on it here and at m.net but all I see are rebuild versus replace arguments, no other alternatives. A failure at 15K is lame, especially when it is on the cold side of the engine and I replaced the master cylinder, the flex line (braided stainless from FM) and flushed it all thoroughly with new fluid when I replaced the slave.
So I am probably going to get a kit and rebuild it. It is $8 at the local Auto Zone (in stock). Before I do, does anyone have any ideas on a mode durable solution? I have read up on it here and at m.net but all I see are rebuild versus replace arguments, no other alternatives. A failure at 15K is lame, especially when it is on the cold side of the engine and I replaced the master cylinder, the flex line (braided stainless from FM) and flushed it all thoroughly with new fluid when I replaced the slave.
#2
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The slave is cast, and the surface is rather porus. I suppose you could sleeve it, but that's a lot of work. From my investigations, the new ones are no better.
I bought a used one and two rebuild kits. I rebuilt both, and keep the second as a quick-change spare. Honing lightly seems to help, but I have no long term data to back it up.
I bought a used one and two rebuild kits. I rebuilt both, and keep the second as a quick-change spare. Honing lightly seems to help, but I have no long term data to back it up.
#4
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The slave is cast, and the surface is rather porus. I suppose you could sleeve it, but that's a lot of work. From my investigations, the new ones are no better.
I bought a used one and two rebuild kits. I rebuilt both, and keep the second as a quick-change spare. Honing lightly seems to help, but I have no long term data to back it up.
I bought a used one and two rebuild kits. I rebuilt both, and keep the second as a quick-change spare. Honing lightly seems to help, but I have no long term data to back it up.
#7
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Well this evening I installed the rebuild kit and bled the system. It is working well, better than it has been working recently even before the failure. We'll see if it holds up.
I did notice that the inside of the cylinder felt a little rough though it was clean and had no rust spots. I was planning on honing it, that is until I realized the hone I bought at Autostoned was too large, damn it
Good question about the RX7 unit. It would be important for the slave bores to be about the same size so that the clutch action would be similar.
I did notice that the inside of the cylinder felt a little rough though it was clean and had no rust spots. I was planning on honing it, that is until I realized the hone I bought at Autostoned was too large, damn it
Good question about the RX7 unit. It would be important for the slave bores to be about the same size so that the clutch action would be similar.
#11
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Anyone know what the bore size is? I think maybe a reamer, say .001 oversize to true up the bore might lead to longer life. It would not only make it round, but should improve the surface enough for a better seal.
They aren't that expensive. Sombody measure a slave, and let me know the size.
They aren't that expensive. Sombody measure a slave, and let me know the size.
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