Servicing Your Bomber CR Coil Rear Shock: Tools and Tips

Posted on
in Uncategorized

Maintaining your Marzocchi Bomber CR Coil [paid link] Rear Shock is essential for keeping your bike’s suspension working smoothly and ensuring a comfortable ride. Whether you’re looking to perform routine maintenance or troubleshoot common issues, this guide will walk you through the necessary steps to get the job done right. We’ll cover the tools required, key servicing procedures, troubleshooting, and customization options for optimizing performance.

Tools Required

Before diving into the servicing process, gather the following tools:

  • 8mm Allen wrench [paid link]
  • 10mm socket wrench
  • Torque wrench [paid link] (for precise tightening)
  • Small flathead screwdriver
  • Shock pump
  • Suspension oil (specific to Marzocchi models)
  • Cleaning rags
  • Latex gloves (optional for cleanliness)
  • Marzocchi-specific service kit (available from authorized dealers)
  • Needle-nose pliers

Having the correct tools on hand ensures a smooth servicing experience and prevents damage to your rear shock.

Disassembling the Bomber CR Coil Rear Shock

To properly service your Bomber CR Coil [paid link] Rear Shock, start with disassembling the shock carefully.

Step 1: Remove the Rear Shock from the Bike

  • Use an 8mm Allen wrench [paid link] to loosen and remove the mounting bolts that attach the shock to the frame.
  • Take care not to damage any frame parts while removing the shock.

Step 2: Remove the Coil Spring

  • Compress the coil spring slightly using a spring compressor tool.
  • Loosen the coil preload adjuster nut with a 10mm socket wrench.
  • Slide the coil off the shock body, ensuring the shock shaft is free of any tension from the spring.

Step 3: Remove the Shock Eyelet and Linkage

  • Use a 10mm socket wrench to carefully remove the shock eyelet.
  • Disconnect the linkage from the shock using your Allen wrench or socket wrench, depending on the shock’s configuration.

Servicing the Shock

Once disassembled, you can begin the essential servicing steps to ensure your shock is running optimally.

Step 4: Clean the Shock Components

  • Use a clean rag to wipe down the shock’s components and remove any dirt or debris.
  • Pay special attention to the shock shaft and piston for any signs of wear or damage.
  • Avoid using harsh solvents that could damage the shock’s seals.

Step 5: Inspect the Shock for Wear

  • Check the shock shaft and seal areas for signs of damage or excessive wear.
  • Inspect the coil for any cracks, especially around the ends where it attaches to the shock body.
  • Examine the eyelets for any elongation of the mounting holes that could cause excessive play during operation.

Step 6: Replace the Suspension Oil

  • Using a flathead screwdriver, carefully pry open the oil fill cap on the shock.
  • Drain the existing suspension oil from the shock reservoir.
  • Fill with fresh Marzocchi-approved suspension oil. Be sure to use the recommended volume to maintain proper shock performance.

Step 7: Reassemble the Shock

  • Reinstall the coil spring by sliding it back onto the shock body.
  • Tighten the coil preload adjuster to the desired setting using your 10mm socket wrench.
  • Attach the shock eyelet and linkage, ensuring that all bolts are properly torqued.

Step 8: Adjust the Spring Preload

  • Adjust the preload of the coil spring according to your riding preferences.
  • Use a shock pump to fine-tune the air pressure (if applicable) to achieve the ideal suspension feel for your weight and riding style.

Troubleshooting Common Issues

Occasionally, issues may arise during or after servicing your Bomber CR Coil Rear Shock. Below are some common problems and how to address them.

Problem 1: Shock Not Rebounding Properly

  • If the shock feels slow to rebound or is unresponsive, it may indicate low oil levels or dirty internals.
  • Recheck the oil level and ensure it’s filled to the recommended volume. Clean and inspect the rebound valve for any blockages.

Problem 2: Coil Spring is Too Soft or Too Stiff

  • If you find that the suspension is bottoming out or feeling too stiff, adjusting the preload on the coil spring should help.
  • If the problem persists, consider swapping to a different spring with a different spring rate, tailored to your body weight and riding conditions.

Problem 3: Noisy Shock

  • Noises can often result from a lack of lubrication or worn-out seals.
  • Inspect all moving parts and apply a thin layer of suspension grease to the shock eyelets and other pivot points to reduce friction.

Customization and Optimization

Once your Bomber CR Coil Rear Shock is in proper working order, there are several customization options to fine-tune the suspension and enhance your ride.

Adjusting the Compression and Rebound Damping

  • The Bomber CR Coil features adjustable compression and rebound damping settings. Experiment with these settings based on your trail conditions and riding style.
  • For faster, technical descents, increase compression damping to prevent the shock from compressing too much. For smoother rides, dial back the compression for a softer feel.
  • Adjust the rebound damping to control how quickly the shock returns after compression. Faster rebound is useful for smooth trails, while slower rebound helps on rougher terrains.

Choosing the Right Coil Spring

  • Coil springs come in different rates, typically denoted by their spring rate in pounds per inch (lbs/in).
  • Choose a spring that suits your riding style and body weight. Heavier riders will need a stiffer spring, while lighter riders will benefit from a softer spring.
  • Consult the manufacturer’s guidelines or a professional bike shop to help you choose the right spring for your setup.

Compatibility with Other Drivetrain Components

The Bomber CR Coil Rear Shock is compatible with most modern mountain bike frames that support coil-sprung rear shocks. However, it’s important to verify compatibility with your specific bike frame. Pay attention to the following:

  • Ensure your frame has the correct shock mount and eyelet dimensions.
  • Some bikes may require specific shock mounting hardware to ensure a secure fit.
  • Always consult your bike frame’s specifications or speak to a professional mechanic to confirm that your Bomber CR Coil Rear Shock will work seamlessly with your bike’s drivetrain.

Conclusion

Servicing and maintaining your Marzocchi Bomber CR Coil Rear Shock will keep your bike performing at its best and extend the lifespan of the shock. By following the steps outlined in this guide, you can ensure your shock operates smoothly, remains properly tuned, and delivers optimal performance in any riding conditions. Whether you’re performing routine maintenance, troubleshooting issues, or customizing for better performance, these tips will help you get the most out of your suspension setup.