The Manitou Mara Inline [paid link] rear shock is a popular choice for cyclists who demand precision, durability, and performance. Over time, the shock’s oil can degrade due to heat, friction, and wear. Regular maintenance, particularly an oil change, is crucial to ensure that the shock performs optimally and maintains its damping characteristics. This guide provides a comprehensive, step-by-step process for performing an oil change on the Mara Inline [paid link] rear shock.

Tools Required

• 8mm and 10mm Allen wrenches [paid link]
• Torque wrench [paid link] (up to 8 Nm)
• Manitou oil (recommended for Mara Inline)
• 5mm Allen wrench [paid link]
• Shock pump
• Small container for draining old oil
• Soft cloth or rags
• Rubber gloves (optional)
• Teflon grease (for reassembly)
• Cleaning brush
• Safety goggles (optional)

Preparation and Safety Measures

Before beginning the oil change, ensure that you work in a clean environment free of dirt or debris that could potentially damage the shock components. Wear rubber gloves to protect your hands from oils and lubricants. Additionally, have a clean work surface prepared to lay out the shock and components.

Step 1: Remove the Rear Shock from the Bike

To begin the oil change process, remove the rear shock from the bike. This is done by first releasing any bolts securing the shock to the frame. Use the appropriate size Allen wrench [paid link] (usually 8mm or 10mm) to remove the bolts at both the top and bottom of the shock.

• Ensure the shock is not under any pressure or load before removing the bolts.
• Keep track of any washers or bushings that may come loose during removal.

Place the shock on a clean surface, making sure it does not get scratched or damaged during the process.

Step 2: Remove the Air Sleeve and Access the Shock Body

The Mara Inline shock has an air sleeve that houses the air spring. To access the internal components for the oil change, you need to remove this sleeve. Typically, this is done by loosening a set screw or bolt located on the shock body.

• Use a 5mm Allen wrench to remove any bolts securing the air sleeve to the shock body.
• Gently pull off the air sleeve, taking care not to damage any seals or o-rings.

Once the air sleeve is removed, you will be able to access the internal shock chamber where the oil resides.

Step 3: Drain the Old Shock Oil

Before refilling the shock with fresh oil, it is necessary to drain the old oil from the shock. Hold the shock over a container to catch the oil as it drains. You may need to move the shock around slightly to ensure all the oil is removed.

• Let the shock sit for a few minutes to ensure all of the old oil is drained completely.
• Use a soft cloth or rag to wipe away any excess oil around the shock body.

At this point, inspect the oil. If it appears discolored, gritty, or contains metal shavings, it’s a clear sign that the shock has been subjected to significant wear, and a more thorough cleaning of the shock might be required.

Step 4: Clean and Inspect the Shock Components

With the old oil drained, now is the time to clean the shock body and other components. Use a soft brush to remove dirt, grime, and old oil from all surfaces. Pay special attention to the areas around seals and threads.

• Inspect the shock’s internal components, including the piston and damper assembly, for wear or damage.
• Check the seals for any signs of cracking or deterioration. If any seals appear damaged, replace them before proceeding.

It’s essential to keep all components as clean as possible to ensure smooth performance once the shock is reassembled.

Step 5: Reassemble the Shock and Add New Oil

Once the shock body and components are clean, it is time to refill the shock with new oil. Follow the manufacturer’s specifications for oil type and quantity. Manitou recommends using their branded shock oil for optimal performance, but other compatible oils can be used based on rider preference.

• Pour the new oil into the shock body slowly, ensuring the oil level reaches the recommended amount specified in the Mara Inline’s manual.
• Replace any internal components like the piston or damper, making sure they are seated correctly and properly lubricated with fresh oil.

Make sure that the oil is spread evenly inside the shock before sealing it back up. Once the oil is added, reinstall the air sleeve, making sure to align it correctly and secure it with the original bolts.

Step 6: Set the Air Pressure and Reinstall the Shock

Before reinstalling the Mara Inline rear shock, you will need to set the correct air pressure for your riding style and weight. Use a shock pump to adjust the air pressure within the recommended range. This pressure affects the shock’s air spring and influences how the bike feels when riding.

• Refer to the manufacturer’s guidelines for the correct pressure range for your weight and riding conditions.
• After setting the air pressure, check the rebound settings to ensure they are appropriate.

Reinstall the shock onto the bike, tightening the bolts to the correct torque specifications (usually around 8 Nm). Ensure that the shock is aligned properly before tightening.

Step 7: Test the Shock Performance

Once the shock is reinstalled, perform a few basic tests to ensure everything is functioning as expected.

• Push down on the rear of the bike to check if the shock compresses and rebounds smoothly.
• Adjust the rebound and compression settings as necessary to fine-tune the performance.

Test ride the bike on a smooth, controlled surface to confirm that the shock is performing at its best. Pay attention to any unusual noises or behaviors that may suggest an issue with the oil change process or shock components.

Troubleshooting Common Issues

Even with proper maintenance, issues may occasionally arise. Here are some common troubleshooting tips:

• Air leakage: If the shock is leaking air, inspect the seals carefully. Replacing damaged seals can often solve this issue.
• Poor damping performance: If the shock feels too soft or too stiff after the oil change, verify that the oil was added to the correct level and that the shock’s internal components are reassembled properly.
• Excessive sag or bottom-out: Ensure the air pressure is set correctly for your weight and riding style. If necessary, adjust the air pressure or consider adding more oil to increase the shock’s performance.

Conclusion

Regular oil changes are a critical part of maintaining the performance and longevity of your Manitou Mara Inline rear shock. By following this step-by-step guide, you can keep your shock operating smoothly and ensure it provides the responsive, controlled ride that is essential for all your cycling adventures. Proper maintenance, including cleaning and oil replacement, will help extend the lifespan of the shock and preserve its damping characteristics, ensuring top-tier performance for many miles to come.