The Herman Miller brand is renowned for its ergonomic and durable office chairs, designed to provide comfort and support for extended periods of use. While these chairs are built for longevity, there may come a time when users need to disassemble or reassemble them—whether for maintenance, relocation, or repair. Understanding the correct procedures for disassembly and reassembly is essential to avoid damaging components and voiding warranties. This guide is based on information from official Herman Miller support materials and technical manuals, offering a structured approach to managing these processes effectively.
Tools and Preparation for Disassembly and Reassembly
Herman Miller chairs are constructed with a variety of components, including gas cylinders, casters, armrests, and tilt mechanisms. Disassembling and reassembling these parts requires the appropriate tools and a methodical approach. Users should ensure they have the following tools at hand:
- Hex Key (Allen Wrench): This is essential for loosening and tightening the bolts that secure the chair’s frame and mechanisms. Different models may require varying sizes, so a set with multiple sizes is recommended.
- Screwdrivers: A flathead screwdriver can be used for prying out stuck casters or gently removing covers. A Phillips screwdriver is necessary for screws found on some components like armrests or tilt mechanisms. A magnetic screwdriver can help prevent small screws from being lost.
- Pliers: These are useful for gripping, twisting, and removing stubborn parts like casters or clips. Needle-nose pliers are particularly helpful for accessing tight spaces.
- Rubber Mallet: This tool is essential for safely tapping out stuck components like the base or gas cylinder. It prevents damage to metal or plastic parts compared to a standard hammer.
- Lubricant (Optional): WD-40 or a similar lubricant can be used to loosen stuck parts, especially the gas cylinder or casters. If a component is difficult to remove, applying a small amount of lubricant and allowing it to sit for a few minutes can help loosen it.
Before beginning the disassembly or reassembly process, it is important to organize the workspace. A clean, well-lit area with ample space to lay out parts and tools can help prevent confusion and reduce the risk of losing small components. Additionally, users should take photographs or notes during disassembly to serve as a reference during reassembly.
Step-by-Step Disassembly Instructions
Disassembling a Herman Miller chair involves removing various components in a specific order to avoid unnecessary strain on the chair or its parts. The following steps are based on general procedures that apply to multiple models, though users should always consult the model-specific manual for detailed instructions.
Remove the Armrests: Depending on the model, armrests may be secured with bolts or clips. Using an Allen wrench, remove the bolts or unclip the armrests from their mounting points. Care should be taken to avoid applying excessive force, as this can damage the plastic or metal components.
Remove the Base and Casters: The casters can be pried out using a flathead screwdriver. If they are stuck, a gentle tap with a rubber mallet can help loosen them. The base is typically attached to the gas cylinder, which can be removed by twisting it counterclockwise. If the gas cylinder is difficult to remove, applying a small amount of lubricant can help ease the process.
Access the Tilt Mechanism: The tilt mechanism is often secured with screws located beneath the seat pan. Using a hex key, remove these screws to access the internal components of the mechanism. Care should be taken to avoid over-tightening or stripping the screws during reassembly.
Detach the Backrest from the Seat: The backrest is usually connected to the seat with bolts that can be removed using an Allen wrench. Once the bolts are removed, the backrest can be carefully detached. If the backrest is connected to a tilt mechanism, additional steps may be necessary to separate the components.
Handle Delicate Components with Care: Parts such as mesh or fabric should be handled gently to avoid stretching, tearing, or fraying. Plastic components, such as armrest covers or caster sockets, should also be treated with care to prevent cracking under pressure.
Label and Organize Parts: As the chair is disassembled, it is important to label and organize the parts to avoid confusion during reassembly. Using masking tape or small stickers to label each part and placing screws, bolts, and clips into separate containers or bags can help streamline the process.
Step-by-Step Reassembly Instructions
Reassembling a Herman Miller chair requires patience and attention to detail to ensure that the chair functions as intended. The following steps provide a general guide, though users should always refer to the model-specific manual for detailed instructions.
Follow the Manual and Diagrams: The Herman Miller Support Page provides downloadable assembly guides for each chair model. These guides include visual diagrams that can help users align the seat, backrest, and armrests properly before securing bolts.
Reattach the Backrest to the Seat: Using the bolts removed during disassembly, reattach the backrest to the seat. Ensure that the components are aligned properly and that the bolts are tightened just enough to secure the connection without stripping the threads.
Reattach the Armrests: If the armrests were removed, they can be reattached using the bolts or clips that were used during disassembly. Care should be taken to ensure that the armrests are aligned properly and that they function smoothly.
Reattach the Base and Casters: The base can be reattached by twisting the gas cylinder clockwise into its socket. If the cylinder is difficult to reattach, applying a small amount of lubricant can help ease the process. The casters can then be reinserted into their sockets using a gentle tap with a rubber mallet.
Secure the Tilt Mechanism: If the tilt mechanism was removed, it can be reattached by securing the screws that connect it to the seat pan. Care should be taken to ensure that the mechanism is aligned properly and that the screws are tightened just enough to secure the connection.
Tighten Screws and Bolts: Once all components have been reattached, users should revisit all screws and bolts to ensure that they are secure but not overtightened. Over-tightening can damage components or strip screws, making future adjustments or disassembly difficult.
Check for Proper Functionality: After reassembly, users should test the chair to ensure that it functions properly. This includes checking the movement of the armrests, the tilt mechanism, and the casters. If any issues are encountered, users should consult the manual or contact Herman Miller Support for further assistance.
Common Mistakes and Precautions
While disassembling and reassembling a Herman Miller chair can be a straightforward process, there are several common mistakes that users should avoid to prevent damage to the chair or its components.
- Using the Wrong Tools: Using the wrong size hex key or screwdriver can strip screws, making future adjustments or disassembly difficult. Users should always ensure that they are using the correct tools for each component.
- Applying Excessive Force: Applying excessive force when removing or reattaching components can damage plastic or metal parts. Users should always use a gentle, methodical approach to avoid unnecessary strain.
- Over-Tightening Screws and Bolts: Tightening screws and bolts too much can strip the threads or damage the components they are securing. Users should tighten screws just enough to secure the connection without over-tightening.
- Ignoring Warranty Terms: Some Herman Miller warranties may become void if the chair is disassembled by someone other than an authorized technician. Users should always check the warranty terms before proceeding with disassembly and reassembly.
- Failing to Document the Process: Taking photos or notes during disassembly can help users avoid confusion during reassembly. This is especially important for complex models with multiple components and mechanisms.
Frequently Asked Questions
Can I disassemble a Herman Miller chair without tools?
No, disassembly requires at least basic tools such as a hex key (Allen wrench) and a screwdriver. Some components, like the gas cylinder or casters, may require additional tools like pliers or a rubber mallet for removal. Attempting to disassemble without the correct tools can damage the chair or its components.
How long does it take to disassemble a chair?
It typically takes 15–30 minutes, depending on the model and the user’s familiarity with the process. Simpler models like the Sayl or Setu tend to be quicker to disassemble, while complex models like the Embody or Cosm may take more time due to additional components and mechanisms. Preparation, such as organizing tools and setting up the workspace, can add another 10–15 minutes.
Where can I find replacement parts?
Replacement parts can be purchased directly from the Herman Miller online store or through authorized dealers. For hard-to-find parts or assistance with identifying the correct components, users can contact Herman Miller Customer Support.
Is disassembly covered in the user manual?
Yes, most Herman Miller manuals include instructions for disassembly or at least reference how to handle individual parts safely. Users can visit the Herman Miller Support Section to find assembly/disassembly guides for their specific chair model. These guides also include visual diagrams to simplify the process.
Can I damage my chair during disassembly?
Yes, improper disassembly can damage components such as the gas cylinder, casters, or tilt mechanism. Users should always follow the instructions provided in the manual and use the correct tools to avoid unnecessary strain on the chair. If a component is difficult to remove, applying a small amount of lubricant can help ease the process.
Conclusion
Disassembling and reassembling a Herman Miller chair requires the use of the correct tools, a methodical approach, and a clear understanding of the chair’s components. By following the step-by-step instructions provided in the manual and avoiding common mistakes, users can ensure that the chair functions properly after reassembly. For those who are unsure about the process or encounter any issues, Herman Miller Support offers assistance to help users navigate the disassembly and reassembly process with confidence. Proper care and maintenance can extend the life of the chair and ensure that it continues to provide the comfort and support that Herman Miller is known for.