Gimbal Bearings should be replaced only when necessary, and this depends on some signs you would’ve noticed and the final diagnostics of a qualified boat mechanic. These replacement indication signs include noises, vibrations, and leaks. How often a gimbal bearing should be replaced also depends on the quality of the bearings, the environment it’s being used, and the amount of use it receives.
I bought my boat 5 years ago and use it primarily in salt water. About 3 years ago, I noticed a rumbling noise when I turned the steering wheel. The noise got louder over time, and I also felt a vibration through the boat. I took the boat to a mechanic, who diagnosed the problem as a bad gimbal bearing. The mechanic replaced the bearing, and the noise and vibration went away. I was glad I caught the problem early before it caused further damage to my boat.
In addition to recommending regular inspection of your boat by a qualified mechanic, I will be giving you the steps involved in replacing the gimbal bearing and tips to maintain it over a period of time to reduce wear and extend the lifespan of your gimbal bearing. Let’s begin!
Importance of Gimbal Bearings
A gimbal bearing is a device that allows a rotating object to remain level, even when the object or the surface it is mounted on is moving. In boats, gimbal bearings support the outboard motor, which allows the motor to stay level even when the boat is rocking in the waves. This is important for smooth sailing, as it prevents the motor from binding or vibrating, which can damage the engine or the boat.
Signs of Gimbal Bearing Wear
When the gimbal bearing of your boat develops an issue, it gives out some warning signs. These signs should be noticed, examine the motion of your boat, and if you need a sound knowledge of how these things work, take your boat for inspection with a qualified boat mechanic.
Here are some common signs and symptoms showing gimbal-bearing wear:
- Unusual noises: A rumbling or grinding noise when you turn the steering wheel is a common sign of a bad gimbal bearing. This is because the bearing is not properly supporting the outboard motor and is rubbing against the housing.
- Vibrations: You may feel a vibration through the boat when you turn the steering wheel. This is another sign that the gimbal bearing is not properly supporting the outboard motor.
- Difficulty in steering: If the gimbal bearing has excessive play, it won’t be easy to steer the boat. This is because the bearing is not providing enough resistance to the movement of the outboard motor.
- Leaks: Leaks can also be a sign of gimbal bearing wear. The gimbal bearing is encased in bellows, a rubber boot that helps keep water out. If the bellows leak, water can contaminate the bearing and cause it to fail prematurely.
If you notice these signs, taking your boat to a qualified mechanic for diagnosis and repair is best. A worn-out gimbal bearing can damage the outboard motor or the boat, so it is important not to let it damage to the extent of damaging the outboard more; have it repaired as soon as possible.
The Replacement Process
Replacing gimbal bearings is a relatively straightforward process, but following the manufacturer’s instructions is important. If you are uncomfortable doing the work yourself, taking your boat to a qualified mechanic is best.
If you want to replace the gimbal bearings yourself, here are the tools you will most likely need:
- Wrench or socket wrench
- Bearing puller
- Clean rag
- High-quality marine grease
Using the right size and type of gimbal bearings for your outboard motor is important. The wrong size or type of bearing can damage the outboard motor or the boat.
Before you begin the replacement process, make sure you disconnect the battery before you open up anything. Also, while working, be careful not to damage the outboard motor or the boat.
Here are the steps involved in replacing the gimbal bearing:
- Remove the outboard motor. This will give you access to the gimbal bearings.
- Remove the gimbal bearing housing. This may require the use of a wrench or socket wrench.
- Remove the old gimbal bearings. Use the bearing puller.
- Clean the gimbal bearing housing to help prevent dirt and debris from contaminating the new bearings.
- Install the new gimbal bearings. Make sure that the bearings are properly aligned.
- Reinstall the gimbal-bearing housing.
- Reinstall the outboard motor.
The cost of replacing gimbal bearings will vary depending on the make and model of your outboard motor and the cost of the replacement bearings. In general, getting quotes from several mechanics before choosing one to do the work is a good idea.
Factors Influencing How Often Gimbal Bearings Should be Replaced
So, look at this. If you use your boat every weekend in salt water and do not properly maintain the gimbal bearings, you will likely need to replace them every 2-3 years. However, if you use your boat a few times a year in freshwater and properly maintain the gimbal bearings, you may not need to replace them for 5-10 years.
Now, these are just assumptions to make you see my point. The actual lifespan of your gimbal bearings will depend on a number of factors. These factors include:
- Usage frequency: Gimbal bearings used more frequently will wear out more quickly than those used less often. For example, if you use your boat every weekend, you will need to replace your gimbal bearings more often than someone who only uses their boat a few times a year.
- Water conditions: Gimbal bearings exposed to harsh water conditions, such as salt water or sand, will wear out more quickly than those used in a more protected environment. For example, if you boat in salt water, you must replace your gimbal bearings more often than someone who boats in freshwater.
- Maintenance practices: Gimbal bearings that are properly maintained will last longer than those that are not. This includes inspecting the bearings regularly for signs of wear and tear, keeping them clean and lubricated, and avoiding operating your boat in harsh conditions.
- Quality of the bearings: Higher quality bearings are made from better materials and are more resistant to wear and tear. They will also be more accurately manufactured, which will help ensure they are properly aligned. If you are looking for gimbal bearings that will last many years, buying high-quality bearings from a reputable dealer is important. You should also check the warranty to ensure you are protected against defects.
Maintenance Tips
Sure, here are some actionable advice on how to extend the lifespan of gimbal bearings through proper maintenance and care:
- Inspect the bearings regularly: Inspect the bearings regularly for signs of wear and tear, such as cracks, leaks, or excessive play. If you notice any of these signs, it is best to have the bearings replaced as soon as possible. If you are not comfortable inspecting the bearings yourself, it is best to have a qualified mechanic do it for you. They can identify potential problems and recommend the necessary repairs.
- Keep the bearings clean and lubricated: Use high-quality marine grease to lubricate the bearings. This will help to prevent the bearings from rusting and wearing out prematurely.
- Use the correct type of grease: Not all greases are created equal. Make sure to use a high-quality marine grease designed for gimbal bearings.
- Renew the grease regularly: The grease will eventually break down and need to be renewed. How often you renew the grease will depend on the amount used and the environment in which the bearings are used.
- Avoid operating your boat in harsh environments: Gimbal bearings exposed to harsh environments, such as salt water or sand, will wear out more quickly than those used in a more protected environment. If you boat in salt water, it is important to rinse the bearings with fresh water after each use.
- Minimize the stress on the bearings: Avoid sharp turns and sudden movements, as these can put a lot of stress on the bearings.
Conclusion
A gimbal bearing should be replaced once wear and tear signs have been noticed. By following the tips in this article, you can help ensure that your gimbal bearing lasts many years. If you notice any signs that your gimbal bearing is going bad, it is important to have it replaced as soon as possible to prevent further damage to your outboard motor.
Thank you for reading. Until next time.