I have an 1988 Cherokee 4.0, 5 speed, 240k miles. In April changed the clutch master (it was leaking bad). A few weeks ago I had a new (not reman) clutch kit including the slave cylinder installed (at 240K it was still the original clutch). It was working great for about a week then lost hydraulic pressure. If I bleed the system it will be good for about a week or so then the same lack of pressure. Don't see any noticeable loss of fluid or any drips anywhere. If I pump the pedal a few times then look in the clutch reservoir I see some small bubbles in the fluid. Short of dropping the tranny to check the new slave is there anyway I can test to find where the air is leaking into the system. Haven't replaced the line from the master to the slave, but don't see any fluid drips. The slave is still under warranty but don't want to drop the tranny only to find the problem not there. The master isn't under warranty anymore but I had no problems until the old slave went. Any suggestions for testing the individual components will be appreciated.
Thanks Dan