1990 Chevy Pu Hydraulic Clutch Problem

wsmm

Member
I just had the clutch on my 1990 Chevy replaced a couple of weeks ago. When I first went to pick it up there was no clutch pedal, it went right to the floor. They re-bled it and it worked fine. Plowed snow with it for about 3 hour worked fine. A few days later moved it back and forth to put on tire chains. Went out yesterday to use it to plow snow, no clutch again, pedal went right to the floor. Called repair shop they said try pumping the heck out of the clutch. No luck with that idea. Tried vacuum bleeding the unit no luck. Then let it gravity bleed for about an hour or more. Lot of black brake fluid came out. Pumped the clutch for about 5 or 10 minutes after closing the bleeder and got great pedal feel. I'm at a loss as what is causing this, I know it's air in the line but why? The only reason the clutch was replaced is that a mouse got into the bell housing and filled the clutch with nesting material and corn. Anything I can do within reason to eliminate this problem.
Thanks,
Bill
 

Did they replace any hydraulic parts or only the clutch itself? I am sure you know that the problem is that air is getting into the system. It usually enters around the piston seals at the master cyl. or the slave cyl. I would replace both cylinders AND any flexible lines....
 
(quoted from post at 09:56:00 01/09/16)
DO YOUR SELF A FAVOR AND REPLACE BOTH CYLINDERS AND ALL HYDRAULIC LINES////THEY ARE 26 YRS OLD!!!!!!!!!!!!!!

Entire system was rplaced 8 years ago. Both cylinders, the hydraulic line and the clutch.
 
Used the truck yesteerday to plow snow. So far the clutch has worked perfectly after gravity bleeing it and the pumping it to refill the kine and slave with fluid. Going to keep an eye on it and try to wait until it warms up to possibly replace the slave and master cylinder.
 
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