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Car Forum / Honda Cars / September 2007clutch pressure cylinder of a manual tranny 2000 Civic
Hello, While doing a minor service, my mechanic found that the master clutch cylinder (is that the right terminology?) is leaking and needs to be replaced. How common is this failure? The car has only 86k miles on it. Also, what would cause the leak to occur, simple wear & tear or driver's action? Thank you. > Hello, > [quoted text clipped - 7 lines] > > Thank you. --------------------------------- It _can_ be caused by somebody doing a careless job of bleeding the brakes. Some will tell you it can't happen. They sometimes fail for no reason, but yours is LOW mileage. 'Curly' >> Hello, >> [quoted text clipped - 15 lines] > > 'Curly' what does brake bleeding have to do with a CLUTCH master cylinder? hydraulic fluid can absorb moisture and that can cause corrosion in the aluminum bore of the master cylinder,which wears out the piston seal. (neoprene plastic?) I suspect changing the fluid every 5 years might make a difference. I suppose that the number of times the clutch pedal is operated matters for seal wear,too. stop n go driving makes you use the clutch a lot more than cruising mode. My 94 Integra GS-R needed a clutch master cylinder fairly early in mileage,but only after ~8 of years of driving.It also needed a brake master cylinder a couple of years later.(my car only had 59K miles when it was stolen,stripped and torched in Jun29-07)  SignatureJim Yanik jyanik at kua.net >>> Hello, >>> [quoted text clipped - 16 lines] > > what does brake bleeding have to do with a CLUTCH master cylinder? ------------------------------- Good point. I was picturing the master BRAKE cylinder. 'Curly' > Hello, > > While doing a minor service, my mechanic found that the master clutch > cylinder (is that the right terminology?) Yes, but I would rearrange that to say that the "clutch master cylinder" is leaking. Grammatically, the subject is the "clutch", while the object is the "master cylinder". > is leaking and needs to be > replaced. > > How common is this failure? The car has only 86k miles on it. Also, > what would cause the leak to occur, simple wear & tear or driver's > action? Both, actually. If you've never changed the fluid, the seals will wear out in jig time. If you spend lots of time in city traffic, the pedal gets a lot of pumps, and each pump is one more scrape of seals against cylinder wall, and thus that much more wear. SignatureTegger The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ >> Hello, >> [quoted text clipped - 22 lines] > pumps, and each pump is one more scrape of seals against cylinder > wall, and thus that much more wear. is there a recommended mileage or # of months for clutch fluid replacement? I suspect there is for the brakes.(don't have a owner's manual anymore to refer to) SignatureJim Yanik jyanik at kua.net > >> Hello, > [quoted text clipped - 33 lines] > at > kua.net I'll check later, but don't remember seeing it in the maintenance list. >> is there a recommended mileage or # of months for clutch fluid >> replacement? [quoted text clipped - 4 lines] > I'll check later, but don't remember seeing it in the maintenance > list. It's /not/ in there, for some odd reason. But the brake and clutch mechanisms are the same basic construction and use the same fluid. The fluids need to be changed at the same time. SignatureTegger The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ I'll probably get flamed but I have never changed any of the following in my car: Brake fluid Clutch fluid (dealer didn't even flush this when they did the clutch on warranty at 170000kms) P/S fluid Coolant (I did change 1/2 of it when I did my water pump) I have also been told by more than one Honda dealer that the above are considered "Lifetime" fluids. I suppose that means that there is no listing on the maintenance schedule, so do it as needed. I have changed: Engine Oil (every 5000-10000kms) - Mobil 1 synthetic since about 80000kms Tranny Fluid (Manual trannie, every 50000-75000km) - Honda fluid only I have a 98 Civic LX Sedan 5spd manual with 283000kms on it. t >> >> Hello, >> [quoted text clipped - 3 lines] > >I'll check later, but don't remember seeing it in the maintenance list. > I'll probably get flamed but I have never changed any of the following > in my car: [quoted text clipped - 8 lines] > considered "Lifetime" fluids. I suppose that means that there is no > listing on the maintenance schedule, so do it as needed. The brake fluid is listed as every 3 years in my Si Manual... SignatureJoe - Registered Linux User #449481 "Hate is baggage, life is too short to go around pissed off all the time..." - Danny, American History X > is there a recommended mileage or # of months for clutch fluid > replacement? > > I suspect there is for the brakes.(don't have a owner's manual anymore > to refer to) Every three years regardless of mileage for both brake and clutch. They are constructed the same way and use the same fluid. This interval assumes the use of genuine Honda brake fluid. If you're using aftermarket fluid (like I do), you need to change it very year. SignatureTegger The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ |
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