Suspension fork maintenance is crucial for maintaining the performance and longevity of your bike. The DVO Emerald Tapered [paid link] fork is a high-performance, dual-crown fork designed for aggressive riding styles like downhill and enduro. Performing an oil change on the Emerald Tapered [paid link] ensures that the fork continues to perform at its best, providing smooth travel, proper damping, and consistent performance. This guide will walk you through the process of changing the oil in your Emerald Tapered fork, including installation, adjustment, troubleshooting, and optimization tips.
Tools Required
- Suspension fork oil (DVO recommends 5WT or 10WT depending on your riding style)
- 8mm Allen wrench [paid link]
- 10mm Allen wrench [paid link]
- Torque wrench [paid link] (up to 50 Nm)
- 22mm spanner or socket
- T25 Torx driver
- Flat-head screwdriver
- Oil pan or container
- Rags or paper towels
- Suspension fork grease (optional)
- Plastic scraper (optional)
Step-by-Step Guide to Changing the Oil
1. Preparing the Fork for Oil Change
Before you begin, make sure to prepare your workspace and gather all necessary tools. It’s best to work in a clean area to avoid contaminants entering the suspension system. The bike should be securely mounted in a bike stand [paid link], with the front wheel removed for easier access to the fork.
2. Remove the Fork from the Bike
To begin the oil change, you’ll first need to remove the fork from the bike. Use an 8mm Allen wrench to loosen and remove the fork’s headset bolts. After this, carefully slide the fork out of the frame, taking care not to damage any components. Place the fork in an upright position to avoid spilling any fluid before the procedure begins.
3. Disassemble the Fork
Start by removing the front fender (if installed) and then the lower legs. Use the appropriate Allen wrench (usually 10mm) to remove the bolts holding the lower legs in place. Once the bolts are removed, carefully slide the lower legs off the stanchions, allowing any residual oil to drain into the oil pan. It’s important to catch all the fluid to avoid mess and contamination.
4. Drain the Old Oil
With the fork upside down, drain the existing oil by letting it flow into the oil pan. The Emerald Tapered fork has separate oil chambers for each leg, so you’ll need to repeat this process for both legs. After draining, you may want to use a clean rag or paper towel to wipe away any remaining oil inside the lower legs.
5. Inspect and Clean the Internal Components
Once the oil is drained, inspect the internal components of the fork, including the bushings, seals, and damping system. Use a flat-head screwdriver or plastic scraper to gently clean any debris or dirt that may have built up inside. Be sure not to damage any parts during this process.
6. Reassemble the Fork
After cleaning, begin reassembling the fork by carefully inserting the stanchions back into the lower legs. Ensure that the seals are correctly positioned and that no dirt or debris is present in the area. You may apply a small amount of suspension fork grease to the stanchions to ensure smooth travel.
7. Fill the Fork with Fresh Oil
The Emerald Tapered fork requires oil to be added to both the air chamber and the damper assembly. Check the manufacturer’s recommendations for oil weight and volume. Typically, DVO recommends 5WT for smoother performance or 10WT for a firmer feel. Fill each chamber with the recommended amount of oil, ensuring that you do not overfill. Use the 22mm spanner or socket to tighten the oil cap.
8. Install the Lower Legs
Once the oil is added, carefully reassemble the fork’s lower legs. Insert the stanchions back into place and torque the lower leg bolts according to the manufacturer’s specifications. Typically, the lower leg bolts should be torqued to around 20-25 Nm.
9. Reinstall the Fork on the Bike
With the fork reassembled, it’s time to reinstall it back into the bike frame. Carefully slide the fork back into the head tube and secure it by tightening the headset bolts with the 8mm Allen wrench. Be sure to torque the bolts to the proper specifications.
10. Check for Leaks and Test the Fork
Before heading out on your ride, perform a quick test to check for leaks. Compress the fork several times and inspect both legs for any signs of leaking oil. If you notice any leaks, stop and recheck your oil seals and components.
Troubleshooting Common Set-up Issues
Fork Not Holding Pressure
If the fork is not holding pressure after an oil change, check the air valve and make sure it is properly seated. Also, inspect the seals for any damage or wear, as this could cause the fork to lose air pressure. A minor tear or deformation of the seals may allow air to escape [paid link], requiring a seal replacement.
No Dampening or Inconsistent Travel
If the fork exhibits poor damping or inconsistent travel, it could be a result of air bubbles in the oil or incorrect oil levels. Recheck the oil levels and bleed the fork to remove any trapped air. Additionally, inspect the damper assembly for any damage or wear that may need attention.
Excessive Oil Leaks
Excessive oil leaks can occur if the lower leg bolts are not tightened properly or if the seals are damaged. Ensure that all bolts are torqued correctly and check the seals for any signs of wear. If the seals are compromised, replace them to prevent further oil leakage.
Customization and Optimization for Better Performance
Adjusting Damping Settings
The Emerald Tapered fork features external damping adjustments for compression and rebound. After changing the oil, it’s a good idea to fine-tune these settings to match your riding style. Start by setting the rebound to a neutral position, then adjust the compression to your desired firmness. DVO’s patented “D-Loc” system allows for precise adjustments, so make sure to experiment to find the optimal setting.
Fine-Tuning Air Pressure
While this guide focuses on the oil change, remember that the fork’s air pressure is another key factor in performance. The Emerald Tapered fork offers excellent adjustability, allowing you to change the air spring pressure to suit your weight and riding style. Adjust the air pressure for the desired amount of sag, and always check the pressure before each ride to ensure consistent performance.
Comparison with Similar Models
The DVO Emerald Tapered fork stands out for its plush travel, adjustability, and damping performance. Compared to other high-end suspension forks, the Emerald Tapered offers a more customizable setup, particularly for aggressive riders. While brands like Fox and RockShox provide excellent forks in the same category, the DVO Emerald’s external tuning features and durable construction make it a great choice for riders seeking performance and longevity.
Compatibility with Other Drivetrain Components
When upgrading or maintaining your Emerald Tapered fork, ensure that it is compatible with your bike’s other drivetrain components. Most modern bikes with tapered head tubes will be compatible with the fork, but it’s essential to confirm the headset size and fork diameter before purchasing or performing maintenance. Additionally, the fork’s performance can be optimized when paired with a high-quality shock absorber, chain, and drivetrain for a more responsive and controlled ride.