The installation of a Momo steering wheel typically involves replacing the factory-installed steering wheel with an aftermarket option, offering benefits such as improved grip comfort and a more direct feel. This process requires specific tools and attention to detail, particularly regarding electrical connections for features like the horn and, in some vehicles, cruise control. The procedure varies depending on the vehicle model and year, but generally involves removing the original steering wheel, installing an adapter hub, and connecting the necessary wiring. Proper alignment and torque specifications are crucial for safe operation.
Steering Wheel and Adapter Hub Considerations
Momo steering wheels are often selected for their enhanced grip compared to standard factory wheels. The documentation indicates that Momo wheels generally position the driver 1 to 2 inches closer to the steering column. Successful installation necessitates the use of an adapter hub specifically designed for the vehicle’s year and model; universal hubs are not recommended. The adapter hub facilitates the connection between the Momo steering wheel and the vehicle’s steering column. It is important to inspect the adapter hub for defects, particularly around the splines, before installation. A defective hub may not slide easily onto the steering column splines and should be replaced.
Removal of the Original Steering Wheel
Prior to removing the original steering wheel, disconnecting the vehicle’s battery is strongly advised to prevent accidental activation of the horn or, in vehicles equipped with airbags, unintended airbag deployment. The process of removing the original steering wheel typically involves removing a center nut, often secured with a 15/16-inch deep socket. The steering wheel may require some force to remove, and a steering wheel puller can be used if necessary. It is important to note the orientation of the steering wheel’s stud or bolt before removal, as this is critical for proper alignment during reinstallation. Marking the “up” and “down” position with a pencil or pen is recommended. In some vehicles, a cable connects the steering wheel to the steering column and must be disconnected.
Adapter Hub Installation and Alignment
Once the original steering wheel is removed, the adapter hub must be installed. The hub should be aligned correctly with the steering column splines. Some hubs have a specific notch or marking to ensure proper orientation. It is crucial to ensure the hub is fully seated and aligned straight before tightening the retaining nut. An unverified user report suggests that incorrect hub installation can result in the vehicle driving crookedly, requiring reinstallation. The documentation specifies a torque specification of 46 ft-lbs for the 16mm retaining bolt, requiring the ignition key to be removed and the steering column locked to achieve proper torque.
Electrical Connections: Horn and Cruise Control
Connecting the horn is a critical step in the installation process. The wiring procedure differs slightly between Momo and Grant steering wheels. Grant wheel horn wiring is simpler, requiring only securing the horn brush contact to the plate with a self-tapping screw and splicing the wires to the horn wire and a ground. Momo installations may require modification of the Horn Brush Contact. In both cases, it is necessary to splice the horn wires correctly to ensure functionality. Some vehicles may retain the use of both the center push horn button and the stalk-mounted horn, while others may require choosing one or the other.
Regarding cruise control, the documentation indicates that cruise control functionality may be lost unless the wiring is specifically spliced into the system. The documentation does not provide detailed instructions on how to maintain cruise control functionality.
Specific Vehicle Considerations
The provided documentation references installation procedures for a Hummer H1, a 1993 Acura Integra (Teg), a 1995 BMW M3, and a Porsche 944. The Acura Integra installation, as described in a forum post, can be completed in approximately 45 minutes. The BMW M3 installation requires identifying the correct slip ring connector, which varies depending on the model year. The Porsche 944 installation involves removing the airbag (with a disclaimer regarding potential risks) and disconnecting the Torx bolts securing the airbag.
Tools Required
The installation of a Momo steering wheel requires a variety of tools, including:
- 3/8 drive ratchet with a 3-inch extension
- Torque wrench
- 3mm Allen key socket
- T30 Torx socket
- 16mm socket
- Small flathead screwdriver
- Phillips head screwdriver
- 13mm wrench
- Soldering iron, solder, and shrink tubing (or butt connectors)
- Steering wheel puller (optional)
- Pencil or pen for marking alignment
Post-Installation Checks and Considerations
After installation, it is essential to verify that the steering wheel is centered and that the horn functions correctly. The documentation recommends carefully storing the original steering wheel and airbag, as they may be required for vehicle resale or to pass state inspection. Momo wheels are available in various sizes, including extra small (320mm), small (350mm), and medium (360mm). The stock steering wheel size is typically 385mm. The choice of wheel size is a matter of personal preference.
Safety Precautions
The documentation emphasizes the potential risks associated with removing the airbag. It is strongly recommended that individuals unfamiliar with airbag systems seek professional assistance. Disconnecting the battery before beginning the installation process is crucial to prevent accidental airbag deployment or electrical shock. The documentation also advises caution when working with electrical connections and recommends proper soldering techniques or the use of butt connectors to ensure secure connections.
Additional Notes
The documentation mentions the availability of a horn push button (AMG part #6017256) for Hummer H1 applications, which can provide a factory-like appearance. It also notes that some Momo wheels have pads covering the metal spokes, typically available in 360mm sizes.
Conclusion
Installing a Momo steering wheel can enhance the driving experience by providing improved grip and control. However, the process requires careful attention to detail, the use of appropriate tools, and adherence to safety precautions. Proper alignment, torque specifications, and electrical connections are crucial for safe and reliable operation. Vehicle-specific considerations, such as slip ring connector types and cruise control compatibility, must be addressed during the installation process.