Category: SUBARU IMPREZA WRX STI Service

Replacing the clutch slave cylinder on a 2001-2002 Subaru Impreza WRX STI involves several steps and requires specific tools and components. Discover more by downloading the manual here……

Here’s a detailed guide on how to perform this task.

### Tools and Materials Needed

1. **Tools:**
– socket set (metric)
– wrench set (metric)
– Screwdrivers (flathead and Phillips)
– Pliers
– Brake line wrench (for the hydraulic line)
– Torque wrench
– Fluid catch pan
– Bungee cord or rope (to hold the clutch pedal down)
– Jack and jack stands (or a hydraulic lift)

2. **Materials:**
– New clutch slave cylinder
– Clutch fluid (typically DOT 3 or DOT 4)
– Brake cleaner
– Rags or shop towels
– Thread sealant (optional for hydraulic line)

### Safety Precautions

– Ensure the vehicle is on a flat surface and secured with wheel chocks.
– Wear safety goggles and gloves.
– Make sure to work in a well-ventilated area.

### Step-by-Step Replacement Process

#### 1. Prepare the Vehicle

1. **Lift the Vehicle:**
– Use a jack to lift the front of the vehicle and secure it with jack stands.

2. **Remove the Battery Terminal:**
– Disconnect the negative battery terminal to prevent any electrical shorts.

#### 2. Locate the Clutch Slave Cylinder

– The clutch slave cylinder is typically located on the transmission housing, near the bell housing, on the driver’s side of the Engine bay. It connects to the clutch release fork.

#### 3. Remove the Old Clutch Slave Cylinder

1. **Drain the Clutch Fluid:**
– Place a fluid catch pan under the clutch slave cylinder.
– Remove the clutch fluid reservoir cap and allow fluid to drain into the pan.

2. **Disconnect the Hydraulic Line:**
– Using a brake line wrench, carefully loosen and disconnect the hydraulic line from the slave cylinder. Be cautious of residual fluid.

3. **Remove the Slave Cylinder Bolts:**
– Locate the two bolts securing the slave cylinder to the transmission. Use the appropriate socket to remove them. Keep these bolts, as you will need them for the new cylinder.

4. **Remove the Slave Cylinder:**
– Pull the slave cylinder away from the transmission. You may need to wiggle it gently to free it from the release fork.

#### 4. Install the New Clutch Slave Cylinder

1. **Prepare the New Cylinder:**
– Ensure the new slave cylinder is clean and free from any debris. Apply a small amount of thread sealant to the threads of the hydraulic line, if desired.

2. **Install the New Slave Cylinder:**
– Position the new slave cylinder onto the transmission, aligning it with the mounting holes and the clutch release fork.
– Insert the bolts and hand-tighten them first.

3. **Torque the Bolts:**
– Using a torque wrench, torque the bolts to the manufacturer’s specifications (usually around 14-18 ft-lbs, but refer to a service manual for exact values).

4. **Reconnect the Hydraulic Line:**
– Reattach the hydraulic line to the new slave cylinder. Tighten it securely with a brake line wrench, being careful not to overtighten.

#### 5. Bleed the Clutch System

1. **Fill the Clutch Reservoir:**
– Refill the clutch fluid reservoir with fresh fluid.

2. **Bleed the System:**
– You can either use a manual method or a pressure bleeder. If you’re doing it manually:
– Have an assistant pump the clutch pedal several times download SUBARU IMPREZA WRX STI 01 02 workshop manual and hold it down.
– Open the bleeder valve on the slave cylinder (if equipped) to allow air and fluid to escape. close the valve before your assistant releases the pedal.
– Repeat this process until no air bubbles are present in the fluid.
– Ensure the reservoir doesn’t run dry during bleeding.

#### 6. Reassemble Everything

1. **Reinstall the Battery Terminal:**
– Reconnect the negative battery terminal.

2. **Test the Clutch:**
– Start the vehicle, and test the clutch operation. Ensure it engages and disengages smoothly.

3. **Check for Leaks:**
– Inspect the area around the slave cylinder and hydraulic line for any leaks.

4. **Lower the Vehicle:**
– Once everything is checked and secure, lower the vehicle from the jack stands.

### Conclusion

Congratulations! You have successfully replaced the clutch slave cylinder on your 2001-2002 Subaru Impreza WRX STI. Make sure to dispose of the old fluid and any waste properly, and take the vehicle for a test drive to ensure everything is functioning correctly. If you encounter any issues, it may be wise to consult a professional mechanic.
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Download SUBARU IMPREZA WRX STI Service Repair Manual 01-02 –

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