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Subject This is something you can do yourself (inside)
     
Posted by Tom B (AZ) on December 21, 2009 at 8:46 AM
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In Reply To Z has too much freeplay in the clutch pedal and it sometimes posted by surfer31337 on December 17, 2009 at 08:18 PM
     
Message The clutch is hydraulic and self-adjusting for the most part. Unless the pushrod has moved from its original spot, if you have free play, it's usually because the hydraulics are leaking. If the pedal is floppy, and does nothing when pressed until it's travelled more than half an inch, then we have a hydraulic problem for sure

The problem may be in the clutch master cylinder or the slave. Finding out what's wrong is the first step. If you look at the master and see some dark spots on the cover or lines, then you should look at it first. If it's dry, but has a low fluid level, then look at the slave.

The slave cylinder.

Pull back on the boot on the slave. If there's wetness or fluid inside the boot, the slave needs replacing.

Now, if the slave is fine, and the level of fluid in the master cylinder is where it should be, then you may need to replace the master because its diaphagram is bad.

When you replace either, you will have to drain and flush the lines. There are two: one from the master to the slave, and one from the slave to the top of the passenger's inner fender liner. Don't ask why - even my contacts at Nissan can't give me an answer to that one. Even if you're just filling up the master, you should drain and flush the lines.

I suggest a gravity drain process. Put a dish under the slave, open the top of the master and open the valve on the second line in the engine bay. Then, open the drain valve on the slave. Pour fresh fluid into the reservoir so that the master never empties completely, and until at least a couple of ounces of new fluid comes out of the slave. Then, close the valve and start the bleeding process. Do the line into the engine compartment first.

I suggest that you use a silicone-based DOT-5 brake fluid, because this stuff won't allow water to form in the line. Water causes rust, and so on.... If you have to replace the slave, it's not expen$ive, so that's good news. The clutch master is another story....

Once you've established hydraulic pressure, you can adjust the pushrod. Send me an email and I'll send you a write-up with pictures that will coach you through that process.

Hope this helps!

TomB (AZ)
IZCC 2802

     
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