No Clutch Repair Part 1: 1987 Honda Super Magna 700 VF700C Clutch Master Cylinder and Slave

Introduction

This tutorial provides a step-by-step guide for repairing the clutch master cylinder and slave cylinder on a 1987 Honda Super Magna 700 (VF700C). Understanding how to service these components is crucial for maintaining optimal clutch performance and overall bike functionality.

Step 1: Gather Necessary Tools and Materials

Before starting the repair, ensure you have the following tools and materials ready:

• Socket set and wrenches (metric)
• Screwdrivers (flathead and Phillips)
• Pliers
• Brake cleaner
• New brake fluid (DOT 4 recommended)
• Clutch master and slave cylinder rebuild kits (if needed)
• Clean rags or paper towels

Tips

• Always wear protective gloves and eyewear.
• Make sure the motorcycle is on a stable surface.

Step 2: Remove the Clutch Master Cylinder

Follow these steps to safely remove the clutch master cylinder:

1. Locate the Clutch Master Cylinder: It is typically found near the handlebar.
2. Remove the Brake Fluid Reservoir Cap: Carefully unscrew the cap and set it aside.
3. Disconnect the Brake Line:
   • Use a wrench to loosen the banjo bolt connecting the line to the master cylinder.
   • Allow any fluid to drain into a rag.
4. Unbolt the Master Cylinder:
   • Locate the mounting bolts and remove them using the socket wrench.
   • Gently pull the master cylinder away from the handlebar.

Step 3: Inspect the Master Cylinder

Once removed, inspect the master cylinder for damage or wear:

• Check for any cracks or leaks in the cylinder body.
• Examine the piston and seals for wear or deterioration.
• Clean any debris or old fluid using brake cleaner and a rag.

Common Pitfalls

• Ensure you do not damage the piston or seals during inspection.
• Dispose of old brake fluid properly, as it is toxic.

Step 4: Rebuild or Replace Components

Decide whether to rebuild the master cylinder or replace it:

1. Rebuilding:
   • If the seals are worn, use a rebuild kit to replace them.
   • Follow the kit instructions carefully for reassembly.
2. Replacing:
   • If the master cylinder is damaged beyond repair, replace it with a new or refurbished one.
   • Ensure compatibility with your bike model.

Step 5: Reinstall the Clutch Master Cylinder

Once the master cylinder is either rebuilt or replaced, reinstall it:

1. Position the Master Cylinder: Align it with the handlebar and secure it with the mounting bolts.
2. Reconnect the Brake Line:
   • Use the wrench to tighten the banjo bolt securely.
   • Ensure there are no leaks.
3. Refill Brake Fluid: Pour the recommended DOT 4 brake fluid into the reservoir.
4. Replace the Cap: Securely screw the reservoir cap back on.

Step 6: Bleed the Clutch System

To remove any air from the hydraulic system, you need to bleed the clutch:

1. Locate the Slave Cylinder: This is typically found near the engine.
2. Open the Bleed Screw: Use a wrench to loosen the bleed screw.
3. Pump the Clutch Lever: Have a helper pump the clutch lever several times.
4. Tighten the Bleed Screw: After a few pumps, tighten the screw while the lever is held in.
5. Repeat: Continue this process until no air bubbles appear in the fluid.

Practical Tip

Keep an eye on the fluid level in the reservoir while bleeding, and add more fluid as needed to prevent introducing air back into the system.

Conclusion

In this tutorial, you learned how to remove, inspect, and either rebuild or replace the clutch master cylinder on a 1987 Honda Super Magna 700. Proper maintenance of the clutch system is vital for safe and smooth motorcycle operation. As a next step, consider checking the slave cylinder or other hydraulic components to ensure they are functioning correctly. Regular inspections can help prevent future issues and prolong the life of your motorcycle.