How to Replace a Master Clutch Cylinder
The master clutch cylinder is part of the hydraulic clutch system in your vehicle. Older clutch systems used a cable actuator to engage and disengage the clutch mechanism. Newer vehicles use a hydraulic system that replaces a fully cable-operated system with hydraulic fluid, making operation of the clutch smoother and easier on the driver. However, clutch master cylinders may fail over time, usually because a leak forms around the seals that hold the hydraulic fluid in the cylinder's reservoir. While rebuilding the master cylinder is an option, it is usually cheaper to replace the entire unit.
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Things You'll Need
- Socket wrench with socket set
- Tube nut wrench
- Catch pan for clutch fluid
Instructions
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1
Locate the master clutch cylinder on your vehicle. It is typically located on the driver's side of the engine bay, bolted to the firewall. It looks like a miniature version of the brake master cylinder. There is a small reservoir that sits on top of a cylindrical aluminum "tube." This "tube" is the master cylinder.
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2
Place a catch pan under the clutch master cylinder to catch any fluid that will leak while working on the system.
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3
Remove the tube nuts that are secured to the master cylinder by turning them counterclockwise with a tube nut wrench. Slide the end of the tube nut wrench over the hydraulic lines first, then orient the wrench so that it fits over the tube nut wrench.
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4
Remove the bolts holding the clutch master cylinder to the firewall and pull the master cylinder off the firewall.
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5
Line up the mounting holes on the new master cylinder with the mounting holes on the firewall, and bolt the master cylinder to the firewall.
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6
Re-tighten the tube nuts onto the clutch master cylinder.
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7
Fill the master cylinder reservoir with clutch fluid and have the system bled by a qualified mechanic.
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Tips & Warnings
For specific information about your vehicle's master clutch cylinder, consult the particular vehicle's manual (see Resources).
