Bike Maintenance Rear Derailleur

Remove the rear wheel and check that the derailleur hanger is straight.

One day, a woman was out riding her bike when she heard a noise coming from the rear derailleur. She stopped to investigate and found that the chain had come off and was caught in the gears. She tried to fix it herself, but she couldn’t get the chain back on. She didn’t have a cell phone, so she started walking her bike home. After a few minutes, she saw a man walking towards her. He asked if she needed help and she said yes. He was able to fix her bike quickly and sent her on her way.

 
 

How Do You Fix A Rear Derailleur?

To fix a rear derailleur, first check that the derailleur hanger is not bent, then check for damaged or bent cogs, and finally make sure that the chain is properly tensioned.

How Do You Fix A Rear Derailleur?
If your bike’s rear derailleur isn’t working properly, don’t despair. In most cases, you can fix it yourself with just a few simple tools. Here’s a step-by-step guide to help you get your derailleur back in working order.

1. First, check to see if the derailleur is properly aligned. If it’s not, gently bend it back into place.

2. Next, check the derailleur’s limit screws. These screws control how far the derailleur can move in each direction. If they’re not set properly, the chain won’t be able to move all the way to the large or small cog.

3. If the limit screws seem to be in the right place, then the problem may be with the derailleur’s tension spring. This spring keeps the derailleur from moving too far in either direction. If it’s broken or not working properly, the chain will fall off.

4. Finally, check the derailleur’s pulleys. These pulleys help guide the chain and keep it running smoothly. If they’re damaged or not working properly, the chain will skip or jump.

If you’ve followed these steps and your rear derailleur is still not working properly, then it’s time to take it to a bike shop.

 

How Do You Adjust A Rear Derailleur?

With the bike in a repair stand, shift into the highest gear, and then loosen the screw that holds the derailleur cage in place.

One of the most important adjustments on a bicycle is the rear derailleur. The derailleur is responsible for moving the chain from one cog to another on the cassette (rear gears). If the derailleur is not properly adjusted, the chain can fall off, the gears will not shift properly, or the chain may rub on the frame.

There are two main adjustment screws on the rear derailleur: the limit screws and the barrel adjuster. The limit screws are used to adjust the furthest the derailleur can move the chain in each direction. The barrel adjuster is used to fine-tune the derailleur’s position.

1. Park your bike on a level surface and shift into the smallest cog on the cassette.

2. Locate the limit screws on the derailleur. These screws are usually labeled H(high) and L(low).

3. Use a Screwdriver to turn the Hscrew clockwise until the chain is aligned with the smallest cog.

4. Turn the Lscrew counterclockwise until the chain is aligned with the largest cog.

5. If the chain falls off when you shift into the smallest cog, turn the Hscrew clockwise until the chain stays on.

6. If the chain rubs on the frame when you shift into the largest cog, turn the Lscrew counterclockwise until the chain stops rubbing.

7. Locate the barrel adjuster on the derailleur. This is a small knob that is usually located near the Hand Lscrews.

8. Turn the barrel adjuster clockwise or counterclockwise to fine-tune the derailleur’s position.

9. Test the derailleur by shifting through all the gears. The chain should shift smoothly and should not fall off or rub on the frame.

10. If the chain falls off or rubs on the frame, readjust the limit screws and/or barrel adjuster until the problem is corrected.

 

How Do You Clean A Rear Derailleur?

Wipe it down with a damp cloth.
Dirty drivetrains are one of the most common problems bike mechanics see. A clean drivetrain can improve your shifting performance and prolong the life of your components, so it’s definitely worth the effort to keep things clean. In this article, we’ll show you how to clean a rear derailleur.

Tools and Materials Needed:

-Bucket
-Warm water
-Degreaser
-Soft brush (toothbrush, paintbrush, etc.)
-Rag

Instructions:

1. Fill a bucket with warm water and a generous amount of degreaser.

2. Remove the rear wheel and place the bike in the stand.

3. Shift the chain into the smallest cog.

4. Use a soft brush to clean the derailleur pulleys.

5. Dip a rag into the degreaser solution and wipe down the derailleur body.

6. Use the brush to scrub the chain, then dip it into the degreaser solution and spin the cranks to work the degreaser through the chain.

7. Rinse the drivetrain with clean water and dry it with a rag.

8. Lubricate the chain and re-install the rear wheel.

And that’s it! Cleaning your rear derailleur is a simple process that only takes a few minutes. By doing this regularly, you’ll keep your drivetrain in top condition and improve your shifting performance.

How Do You Lube A Rear Derailleur?

It is important to lube a rear derailleur to keep it functioning properly.
If you ride your bike frequently, it’s important to keep all of the parts clean and well-lubricated – this includes the rear derailleur. The rear derailleur is responsible for moving the chain from one cog to another on the cassette, and if it isn’t properly lubricated, it can cause some serious problems.

Here’s a step-by-step guide to lubricating your rear derailleur:

1. First, you’ll need to remove the rear wheel from your bike. This is usually pretty easy to do – just loosen the quick release lever and pull the wheel out.

2. Once the wheel is out, you’ll be able to see the rear derailleur. It’s the part of the bike that the chain runs through and it’s usually located just below the cassette.

3. Before you start lubricating the derailleur, it’s a good idea to clean it with a degreaser. This will help remove any old grease or dirt that could be clogging it up.

4. Once the derailleur is clean, you can start lubricating it. You’ll want to use a light lubricant – something like WD-40 or chain lube.

5. Apply the lubricant to the moving parts of the derailleur, and then use a rag to wipe away any excess.

6. Finally, put the rear wheel back on your bike and you’re good to go!

Lubing your rear derailleur is a pretty simple process, but it’s important to do it on a regular basis. If you ride your bike a lot, you should probably do it every few weeks. But if you only ride occasionally, once a month should be sufficient.

 

FAQ

How Often Should You Lube A Rear Derailleur?

The recommended interval for lubing a rear derailleur is every 50 miles or once per month, whichever comes first.
 

How Often Should You Clean A Rear Derailleur?

A rear derailleur should be cleaned every few months, or whenever it starts to feel sluggish. To clean it, remove the chain and use a soft brush to remove any dirt or debris from the derailleur’s pulleys and cage.
 

What Are The Symptoms Of A Dirty Rear Derailleur?

There are a few symptoms that may indicate a dirty rear derailleur:

 

1. The chain may skip or jump when shifting gears, especially if shifting to a larger cog or chainring.
2. The derailleur may make a grinding or screeching noise.
3. Shifting may feel sluggish or sticky.
4. The derailleur may not return to the correct position after shifting.

If you notice any of these symptoms, it’s a good idea to clean your derailleur.

 

What Are The Symptoms Of A Dry Rear Derailleur?

There are a few symptoms that may indicate that a rear derailleur is dry and in need of lubrication. These can include: shifting that feels less smooth than usual, gears that feel like they are slipping or catching, and increased noise from the drivetrain. If any of these symptoms are noticed, it is best to clean and lubricate the rear derailleur as soon as possible to maintain optimal performance and extend the life of the component.

Conclusion

Bike maintenance is important to keep your bike running smoothly. The rear derailleur is one part that needs to be regularly maintained. By keeping it clean and lubricated, you can help prevent major problems.

Hopefully, you are clear on how to maintain your bike’s rear derailleur. If you still have any questions, feel free to comment below.