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Old 12-30-2011, 12:47 PM
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Hydralic clutch troubles

Hi people, been a while! My problem is that I had an automotive school teacher replace the clutch on a 99 Chevy Extreme truck that I had bought.Afterward when shifting normally the gears would crunch. Power shifting there was no problem. Returning from its maiden voyage the clutch pedal went hard, no shifting, with some luck I managed to get it home. Since I can't push the pedal in I can't start it. Would the hydraulic clutch cylinder seize up suddenly just like that or do you think that there is another problem? Where should I start Chevy Mikee

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Old 12-30-2011, 01:13 PM
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hyd clutch

Take off the maste cyl n line going from it to the slave cyl
make sure the pedal is free n goes all the way to the floor,it probably will
Clamp the master cyl in a vise fill with fluid
Take a screwdriver or similar tool and push the master cyl piston inwards
2 things may happen
1 fluid comes out n piston has full travel(master cyl ok)
2 piston gets stuck (master cyl bad)
If piston goes the full travel as in #1 pump cyl with screwdriver while using finger as check valve on outlet end if you cen pump fluid out this is ok n last test for master cyl
To test slave cyl remove slave cyl n clamp in vise build a stop so that it cant travel more than an inch or so out of the bore, take a rubber tip blow gun and blow air into the inlet if it moves out slave cyl is ok.
I am assuming the slave is mounted outside the bell housing and not inside
To test clutch the only thing you can do here is with the car not running of course, take a 2 foot crecsent wrench put it on the clutch fork and push forward (towards fron of engine) if it moves clutch is probably ok
I hope this help
If you have any problems bleeding post back n I will guide u through that
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