How to Inspect and Tune Advent RD-M6195M Rear Derailleurs

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The Advent RD-M6195M [paid link] rear derailleur by microSHIFT is a high-performance component designed for smooth shifting and reliability. Proper maintenance, inspection, and tuning are essential for ensuring optimal performance and prolonging the lifespan of the derailleur. In this guide, we will walk you through step-by-step instructions on how to inspect, adjust, and troubleshoot your Advent RD-M6195M rear derailleur.

Tools Required

  • 5mm Allen wrench
  • Phillips screwdriver
  • Chain checker tool
  • Torque wrench
  • Cable cutters
  • Lubricant (for derailleur pivots and chain)
  • 3mm Allen wrench (for adjusting limit screws)
  • Ruler or tape measure (for B-screw adjustment)
  • Lubricating oil for cables
  • Chain cleaning tools

Inspection and Cleaning

Before starting any maintenance, it is important to thoroughly inspect and clean your Advent RD-M6195M rear derailleur. Regular inspections can help you identify any issues before they become more serious.

1. Check for Wear and Damage

Inspect the derailleur for any visible signs of damage such as cracks, bends, or broken parts. Pay close attention to the jockey wheels, derailleur hanger, and the derailleur cage. Ensure the cage moves smoothly and the jockey wheels spin without resistance. If you notice excessive play or a bent cage, it may be time for a replacement.

2. Clean the Derailleur

Dirt and grime can cause the derailleur to perform poorly and lead to accelerated wear. Use a degreaser to clean the derailleur, ensuring you remove all dirt and grease. You can use a brush to clean hard-to-reach areas, like the jockey wheels. After cleaning, lubricate the derailleur pivots and jockey wheels lightly with a dry lubricant or silicone-based spray to ensure smooth operation.

3. Check for Chain Compatibility

Inspect the chain for wear using a chain checker tool. A worn chain can affect the shifting performance and cause premature wear on the derailleur. Replace the chain if it exceeds the recommended wear limit. Additionally, make sure the chain is properly routed through the derailleur and is not excessively slack or tight.

Adjusting the Advent RD-M6195M Rear Derailleur

The proper adjustment of the Advent RD-M6195M is crucial for smooth shifting performance. Incorrectly adjusted derailleurs can lead to skipping gears, poor chain retention, and inefficient power transfer. Follow these steps to ensure precise adjustments.

1. Set the Derailleur Hanger

The derailleur hanger must be aligned correctly to ensure the derailleur shifts properly. Use a derailleur hanger alignment tool to verify that the hanger is straight. If it is bent, carefully straighten it, or replace it if necessary. A misaligned derailleur hanger will lead to poor shifting and could damage the derailleur.

2. Adjust the Limit Screws

Limit screws are crucial for controlling how far the derailleur can travel. These screws prevent the derailleur from shifting the chain off the cassette or into the wheel.

  • Low limit screw (L): This screw controls the position of the derailleur on the smallest cog. Turn the screw clockwise to decrease the distance, or counterclockwise to increase it.
  • High limit screw (H): This screw controls the position of the derailleur on the largest cog. Adjust it in the same manner to ensure the derailleur does not overshoot or miss the largest cog.

To adjust the limit screws:

  1. Shift the bike into the smallest cog.
  2. Use a 3mm Allen wrench to adjust the low limit screw (L), ensuring the derailleur sits just outside the smallest cog, without rubbing the wheel.
  3. Shift to the largest cog and adjust the high limit screw (H) to ensure the derailleur stops just outside the cog without overshooting or rubbing.

3. Set the B-Screw

The B-screw controls the distance between the derailleur and the cassette. Proper B-screw adjustment ensures smooth shifting and prevents chain rub on the cogs.

To adjust the B-screw:

  1. Shift the bike to the largest cog.
  2. Using a 5mm Allen wrench, adjust the B-screw so that there is a small gap (about 5-7mm) between the top jockey wheel and the largest cog.

Fine-Tuning the Shifting Performance

After adjusting the limit screws and B-screw, it is time to fine-tune the shifting for optimal performance.

1. Adjust the Barrel Adjuster

The barrel adjuster on the derailleur or shifter allows for fine-tuning the cable tension. Adjusting the cable tension ensures smooth, accurate shifting across all gears.

  • To increase cable tension, turn the barrel adjuster counterclockwise.
  • To decrease cable tension, turn the barrel adjuster clockwise.

Shifting should be smooth, with no hesitation or skipping. If the bike skips gears or hesitates during shifts, adjust the barrel to increase or decrease tension as needed.

2. Test the Shifting Across All Gears

Shift through all gears while turning the pedals to ensure smooth transitions between each cog. Pay attention to any signs of skipping, hesitation, or chain rub. Make further adjustments to the barrel adjuster and limit screws if necessary.

Troubleshooting Common Set-Up Issues

Even with proper setup, you may encounter some common issues that can affect shifting performance. Here are solutions to help you troubleshoot these problems.

1. Chain Slipping or Skipping Gears

If the chain is slipping or skipping, it may indicate insufficient cable tension or a worn-out chain. Check the cable tension using the barrel adjuster and increase it if necessary. If the problem persists, inspect the chain for wear and replace it if it has exceeded its wear limit.

2. Derailleur Not Moving Smoothly

If the derailleur isn’t moving smoothly, it may be due to dirt buildup or lack of lubrication. Clean the derailleur thoroughly and apply lubricant to the pivots and jockey wheels. Also, ensure the derailleur hanger is properly aligned.

3. Poor Shifting Performance

Poor shifting performance can often be traced back to incorrect cable tension or misadjusted limit screws. Ensure the limit screws are correctly set, and the cable tension is properly adjusted. Additionally, check for any cable fraying or damage that may be affecting shifting.

Customization and Optimization for Better Performance

To get the best performance out of your Advent RD-M6195M, consider these optimization tips:

  • Upgrade the Chain: Opt for a high-performance chain that is compatible with the Advent RD-M6195M for smoother shifting and better durability.
  • Regular Lubrication: Regularly lubricate the derailleur pivots, jockey wheels, and cables to ensure smooth operation and prevent wear.
  • Use a Stiffer Cage for Better Shifting: A stiffer cage improves shifting accuracy, especially under load. If you ride aggressively, consider upgrading the derailleur cage for better performance.

Compatibility with Other Drivetrain Components

The Advent RD-M6195M is designed to work with microSHIFT’s 9-speed systems and is compatible with a wide range of cassettes and chains. However, to ensure optimal performance, it is essential to match the derailleur with compatible shifters, cassettes, and chains.

  • Shifters: The Advent RD-M6195M is best paired with microSHIFT 9-speed shifters, as it is tuned for precise indexing with this system.
  • Cassettes and Chains: The derailleur is designed to work with 9-speed cassettes. Ensure the cassette is within the recommended range for the derailleur to achieve optimal shifting performance.

By ensuring compatibility between the components, you’ll maximize the performance and longevity of your Advent RD-M6195M rear derailleur.