Possible Causes of Jeep CJ5 Clutch Slave Cylinder Problems
As part of the manual transmission, the small, hydraulic Jeep CJ5 clutch slave cylinder is used to press against the clutch fork or the pressure plate. It also receives brake fluid from either the clutch master cylinder or the brake master cylinder. The clutch slave cylinder also keeps the clutch pedal stable and functional. While it is more of a supporting part of the system, without this component, your clutch won't work properly. Should you have problems with your clutch, you should give the slave cylinder a look.
Clutch pedal travels to the floor with little or no resistance
If you notice the clutch pedal getting to the floor without you having to use that much effort, then the clutch slave cylinder might be bad due to an external or internal seal leak. An external seal leakage is more common so troubleshoot that first by inspecting the component for leakage. If there is a leak, rebuild the clutch slave cylinder or replace it with a new one.
If the clutch fails to release when you have fully depressed the clutch pedal, this can prevent an operator from shifting the transmission, which could then lead to gear grinding. If this happens to your car, the clutch slave cylinder might be leaking. A defective cylinder might fail to move the throw-out bearing, which is responsible for disengaging the clutch from the flywheel. If your car's clutch slave cylinder is leaking, try bleeding it. If this does not correct the problem, you might have to replace the component.
Other troubleshooting tips
Note that a bad clutch master cylinder will show similar symptoms, so make sure that you look closely at both components in order to properly determine which one is the problem.
To bleed the clutch slave cylinder, you will need a tool called a bleeder that comes with the component. Have a friend depress the clutch pedal as you open the bleeder to let the air out of the slave cylinder. Once the pedal is pushed all the way to the floor, close the bleeder, and ask your friend to slowly let the clutch pedal up. Repeat this procedure until there is no more air in the system-your friend will know this when the clutch pedal does not feel soft and spongy anymore.