clutch master & slave cylinder replacement notes (94 Civic EX)

Discussion in 'Civic' started by Abeness, Jul 8, 2005.

  1. Abeness

    Abeness Guest

    Today I replaced the clutch master and slave cylinders on my 94 Civic
    EX. Master cylinder was leaking and starting to feel funny, and the
    dealer on pre-purchase inspection had said that the slave was leaking
    too. Turns out it didn't appear to be, but the boot was pretty rotten,
    the piston didn't look exactly perfect, and I had already bought the
    part, so I stuck it in. Piece of cake, mostly. Couple of tips for anyone
    doing it:

    1) It's pretty much impossible to use even a 12-pt combo wrench on the
    left master cylinder nut. Because the bolt extends way beyond the nut
    and because the fit is really tight, I used a deep socket on a 3-inch
    extension. Once they're loosened slightly they come off real smooth with
    a finger.

    2) While one *might* be able to get the new master cylinder in without
    removing the clutch fluid reservoir, it is *much* easier both out and in
    if you remove it. I sucked the fluid out with one of those MityVac
    vacuum pumps, then placed paper towel underneath before removing the
    reservoir hose. Wow, was that fluid dirty--black with crud, I assume
    from the degradation of the rubber in the master cylinder.

    Incidentally, the ~$35 MityVac job (if I remember how much I paid for
    it) has a plastic pressure gauge cover that cracked and came off at the
    first little scrape in the trunk. Shoddy design, I'd say. They do sell a
    metal one, but if I recall it's about double the price.

    3) I recommend completely removing the short length of pipe that's
    connected to the slave cylinder to prevent damaging the pipe in trying
    to get it out of the cylinder after unscrewing the fitting. It's jammed
    in there pretty well, and the shape did not lend itself to coming out
    easily till I disconnected the other end as well. I suppose you could
    just unbolt the slave at that point and it might not be a problem.

    4) I put anti-seize on the slave cylinder bolts before reassembly, but
    this really didn't seem all that necessary, as they came right out.
    Foolish me, though, had my hand in a stupid place as I was applying
    leverage, and I took off a good amount of skin. Ow. Good reminder to
    wear latex gloves, and be careful of where body parts are when applying
    force.

    5) Between both sucking the fluid out of the reservoir and completely
    changing the fluid during bleeding, I caught just 80 ml of fluid. System
    holds a lot less fluid than the brake circuits, for sure.

    6) The last guy/gal to touch the release fork boot just shoved it in
    improperly. It was permanently deformed in such a way that crud could
    enter the clutch housing, and the rubber was pretty rotten. I replaced
    the boot. Hoping there isn't too much crap in the housing...

    Done in around 2 hours, including clutch pedal readjustment; that long
    mainly due to maneuvering tight spaces and schmoozing (did it on the
    street). ;-)

    Abe
     
    Abeness, Jul 8, 2005
    #1
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.