05-03-2018, 11:07 PM
Join Date: Apr 2018
Originally Posted by Luckymac
There are four components that actuate the clutch.
Clutch pedal assembly
Clutch master cylinder
Slave cylinder (replaces the throwout bearing)
The symptoms you described indicate either a failing master cylinder or air in the line.
Since you replaced the master cylinder twice, we'll look elsewhere.....That leaves air in the line or a failing slave cylinder.
There's an outside chance that if you have an original fluid line from when the Jeep was new, that it might be failing. The rubber part of the fluid line might be swelling under repeated pressure. There should be a braided stainless line available from vendors on this forum.
We want to explore all options before pulling the transmission.
Manual bleeding seems to be the trick that works.
1- The underguy opens the bleeder valve.
2- The upperguy stomps on the clutch pedal and holds it to the floor.
3- The underguy closes the bleeder.
4- The upperguy releases the clutch pedal.
Repeat, making sure that the tiny master cylinder doesn't run dry. You might have to top off the master a couple or few times before all the air is out.
The reason upperguy stomps on the pedal is to forcefully push what air is caught in the loop by the bell housing past the loop and down towards and out the bleeder nipple.
Where are you buying your master cylinders? Post a pic of the old one.
Good Luck, L.M.
so I get the master cylinder from Napa auto parts. Has a threaded metal line. When we went to bleed the line i took off the cap from the master had my friend pump clutch 10 times and hold then open bleeder. It would come out in a stream and once the stream stopped and started dropping I would close it check the fluid level and repeat about 6 times. About halfway through the bleeding when I opened the bleeder once it practically exploded on me from what I think was an air bubble in the line.