How to Change the Gas Lift on a Herman Miller Aeron Chair

Introduction to Gas Lifts and Herman Miller Aeron Chairs

Gas lifts are a critical component in office chairs, enabling height adjustment and ensuring ergonomic comfort for users. They function through a compressed gas cylinder that allows the chair to raise or lower smoothly based on the user's preference. Designed to withstand frequent use, gas lifts enhance workspace adaptability and user productivity.

The Herman Miller Aeron chairs boast excellent, innovative ergonomic design; for that matter, high-quality gas lifts are used in the chair design. Designed to be functional and long-lasting, the chairs have been superior in comfort and support. Their adjustable features in height, posture, and tilt mechanisms are suited for diverse needs. Understanding how the gas lift works is important for any maintenance or replacement tasks.

Why You Might Need to Replace the Gas Lift on Your Aeron Chair

Over time, an Aeron chair's gas lift mechanism degrades and begins to affect the sitting experience. The common signs of mechanisms that need replacement include inability to hold the desired height or sudden sinking when seated. Using a broken gas lift will lead to poor posture and discomfort with long sitting.

These could be due to wear and tear, overloading, or simply the natural degradation of the parts. Other than the above, bad adjustment habits may result in quicker degradation of the gas spring mechanism. Replacement of the gas lift will keep the chair ergonomic, hence prolonging the service life and usability period.

Tools and Materials Required for the Job

Preparing the right tools and materials will go a long way in making the process of replacing the gas lift for a Herman Miller Aeron chair smooth and efficient. Here is a list of items needed for the procedure:

Tools:

Materials:

• Replacement gas lift cylinder: It should be compatible with the Herman Miller Aeron model.

• Lubricant: This will help the new cylinder go on smoothly without sticking.

• Cleaning cloth: For wiping down components and cleaning them of dirt or any other material.

Testing of the chair after installation ensures that replacement has been successful.

Safety Precautions Before Replacement

The first thing to consider while replacing the gas lift on the Herman Miller Aeron chair is safety. So, firstly, place the chair on some non-slippery floor that will not move somehow during manipulations. Then, put on protective gloves and eyeglasses in case working with parts under pressure may mean some particular risks. Prepare all necessary tools in good working condition: a rubber mallet, screwdrivers, and a pipe wrench.

Loosen any adjustable parts such as armrests or back support to minimize interference. Ensure the chair is not still attached to a pneumatic lift system.

Removing the Old Gas Lift from the Aeron Chair

To remove the old gas lift from the Herman Miller Aeron chair, start by flipping the chair over to access the base. Flip the chair over onto a flat surface where it can remain stable, without moving, during the process. Take a rubber mallet and begin tapping around the bottom of the base where the gas lift is seated.

If the gas lift doesn't come loose easily, the penetrating oil should be squirted onto the joint where the cylinder joins the base and let to sit for several minutes. Reach in, grabbing the gas lift using either a pipe wrench or locking pliers. There may need to be twisting, plus pulling, to let it free from the mechanism of the cylinder. Tugging should be done rather gingerly to avoid snapping the surrounding parts.

Preparation of the Chair before Installation of the New Gas Lift

Begin by having the Herman Miller Aeron chair on a firm and even surface as one gets ready to install the new gas lift. Begin by carefully removing the base of the chair from the chair. Firmly hold the seat mechanism of the chair while pulling the base away from the central gas lift cylinder. If it happens to be stuck, tap the bottom of the base with a rubber mallet.

Clean the cylinder socket of any residue of the old gas lift, as well as any accumulated debris. Take a clean, dry cloth and clean up the socket area by dusting and cleaning grease from it. Ensure the new replacement gas lift is appropriate for the Aeron chair.

Installing the New Gas Lift on the Aeron Chair

To install the new gas lift, take the new cylinder and align its base with the base of the chair. Insert the narrower end of the gas lift into the central socket of the chair base—ensure it sits properly.

Put the seat assembly back on top, ensuring the upper socket goes over the cylinder. Push firmly in a downward direction to ensure the components held firm in place.

Carefully lower the chair to the floor and have a seat on it to further stabilize the gas lift. Check the height adjustment lever for smooth operation, making multiple adjustments as necessary.

Common Issues That May Arise During Replacement

There are several issues that one may experience while replacing the gas lift in a Herman Miller Aeron chair. Early identification ensures smoother repairs.

• Stubborn or Jammed Gas Lift: Apply lubricant to help loosen the sticking of the old gas lift. Work with a rubber mallet carefully, using controlled force to avoid heavy impacts that might damage the mechanism of the chair.

• Misaligned Base: The problem in re-attaching the base of the chair may be due to misalignment. Correctly center the gas lift within the base socket before pressing down.

• Chair Wobbling After Replacement: If wobbling occurs, make sure the new gas lift is fully seated into the mechanism and base. Any loose screws should be tightened.

Patience and precision are key to resolving these issues effectively.

How to Test and Adjust the Chair after Gas Lift Replacement

Now the Herman Miller Aeron gas lift has been replaced; the next step is the checking and adjustment of functionality. Carefully place the chair on a firm and level surface. Sit back in it and slowly actuate the height lever up, ensuring the seat rises smoothly and lowers down without malfunctioning.

Let the new gas lift operate without resistance or stiffness. Test the tilt mechanism by slowly reclining in the chair to ensure it provides proper support and fluid movement. If the recline tension requires adjustment, use the tilt tension knob located underneath the seat to set the desired firmness.

Caring for Your Aeron Chair to Ensure Long Life

Proper maintenance is key to keeping your Herman Miller Aeron chair in good working condition and comfort for years to come. The general care it requires is cleaning, component inspection, and prompt addressing of small issues.

• Clean surfaces regularly: Regularly dust the mesh and frame with a soft cloth; vacuum the chair to avoid accumulation of debris. In case of stains, use a mild soap solution; harsh chemicals will damage the material.

• Inspect moving parts: Take the gas lift, the tilt mechanism, and wheels every now and then and get them serviced. Fix those loose bolts and oil the mechanical parts.

• Care for the chair: Place a floor mat under the wheels for both hardwood and carpet floors to protect the wheels and floor. Avoid exposing the chair to extreme temperatures for prolonged periods or direct sunlight for long periods.

Regular maintenance increases the chair's life and comfort.

Frequently Asked Questions About Gas Lift Replacement

• How long does it usually take to change out the gas lift? Generally, it takes about 15-30 minutes to replace a gas lift in a Herman Miller Aeron chair. However, the time may vary depending on one's experience and availability of tools.

• What tools are required for gas lift replacement? Major tools include a rubber mallet, a pipe wrench, or locking pliers, possibly a flathead screwdriver for removing stubborn components.

• Can the old gas lift be reused? Typically, the old gas lift cannot be reused, as it loses its lifting capability over time and cannot provide reliable service.

• Does replacing the gas lift void the warranty? Replacing the gas lift may void your warranty. Refer to Herman Miller’s warranty terms and conditions for further clarification by contacting customer service.

• Are third-party gas lifts compatible? While third-party gas lifts may fit, the use of original parts from Herman Miller is highly recommended for full functionality and compatibility.

Conclusion and Final Tips for a Successful Repair

Precise detailing at every step is crucial for an incident-free replacement of a gas lift in your Herman Miller Aeron chair. Have all tools prepared, be accurate with the installments, and do not use excessive force while fitting the parts.

Test all the functions of the chair before using it regularly. In case complications arise, always refer to the repair manual or get professional assistance to preserve the structural integrity of your chair.