Wednesday, May 21, 2014
How to Replace the Clutch Master Cylinder of a 1995 Jeep Wrangler
Jeep Wranglers are equipped with hydraulic clutches. There are two components to a hydraulic clutch system, a master cylinder and slave cylinder. When you push on the clutch with your foot the master cylinder pushes hydraulic fluid down a line to the slave cylinder. The slave cylinder then pushes the clutch lever, opening and closing the clutch. Master cylinders have a tendency to lose pressure over time and need to be changed.
Instructions
- 1
Remove the clutch master cylinder cap. It is bolted to the firewall at the highest point above the steering column. Suck out all the fluid with the syringe.
2Disconnect the hydraulic line coming into the cylinder with a 3/8-inch open end wrench.
3Remove the upper and lower master cylinder mounting nuts with the 1/2-inch wrench.
4Lean under the dashboard on the inside of the cab. Trace the clutch pedal up to the point where it meets the lever coming in from the master cylinder. The pedal is joined to the lever with a cotter pin. Pull out the cotter pin with pliers. Using your fingers, disconnect the pedal from the lever by pulling it to the side.
5Pull the cylinder free from the firewall. Insert the new cylinder. Screw both cylinder mounting bolts back into the firewall securing the cylinder to the firewall. Screw the 3/8-inch hydraulic line onto the new cylinder.
6Lean under the dashboard. Connect the clutch pedal to the master cylinder lever coming in through the firewall. Insert the cotter pin.
7Fill the master cylinder with hydraulic fluid but leave the cap off. Get into the vehicle and pump the brake several times until the brakes have sufficient resistance. You will be able to feel the brake get stiff as any air escapes when you are pumping the brakes. Put the cap back on the master cylinder.
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