Otis Singleton
The Chicago Electric DA polisher is a powerful tool that offers great value for money. However, some users have reported issues with harsh vibrations and noise. One way to address these problems is by replacing the stock grease with a higher-quality synthetic grease, which can lead to a quieter machine with reduced vibrations. This process, known as a grease mod, involves disassembling the polisher, replacing the grease, and making any necessary adjustments. While it can be done at home with the right tools and instructions, it is important to consider the time and effort involved, as well as the potential for stripped screws and other challenges.
Replacing Grease in Chicago Electric DA Polisher
| Characteristics | Values |
|---|---|
| Required tools | Screwdriver, long nose plier, supplied wrench, hex key, synthetic grease |
| Additional items | Extreme pressure grease (item: 40710), Kroil oil, impact wrench |
| Process | 10 steps, including removing screws, spreading grease, re-installing backing plate |
| Time | 15 minutes |
| Cost | $49.99 for polisher, $15 for 2-year replacement warranty |
| Benefits | Reduced noise, reduced vibration, superior temperature protection |
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What You'll Learn
Tools required for the grease replacement
To replace the grease in a Chicago Electric DA polisher, you will need a few tools and materials. Firstly, you will require a screwdriver, preferably a good quality one of the appropriate size for the screws in your polisher. A long-nose plier will also be needed, in addition to the supplied wrench and hex key that come with the DA polisher. If your screws are extremely tight, you may need to use some kroil oil to loosen them, and an impact wrench may also be useful for removing tight screws.
You will also need some synthetic grease, such as the extreme pressure grease recommended for the Chicago Electric 6" DA polisher (item: 40710). This grease will lubricate and protect the components of your power tool, reducing wear and improving performance and longevity.
Additionally, you may want to trim the backing plate's edge or replace it with a better-quality plate, as the stock backing plate is known to chew up pads. A Meguiar's 5" Soft Buff DA Backing Plate is a suitable alternative.
Finally, it is recommended to follow a step-by-step guide or video tutorial for the grease replacement process, which can be found online or on YouTube.
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Removing the old grease
To remove the old grease from your Chicago Electric DA polisher, you will need a screwdriver, a long-nose plier, a wrench, and a hex key. You may also need some Kroil oil to help loosen the screws.
First, use the wrench to reposition the balance block underneath the backing plate. Next, remove the screws that hold the counterweight in place. These can be extremely difficult to loosen, so you may need to use some Kroil oil to help. Once the screws are removed, take off the counterweight and set it aside. Now you can remove the old grease from the machine. Spread out the new synthetic grease nicely into the reducer block. Don't forget the narrow groove under the big gear and the fore cover.
Revert to the process by re-installing the backing plate and you're done!
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Choosing the right grease
When choosing the right grease for your Chicago Electric DA Polisher, there are several factors to consider. Firstly, the type of grease you select should be compatible with the specific application and operating conditions of your polisher. This includes considering the temperature range in which the grease will be performing, as well as factors like load and pressure. Synthetic greases, for instance, offer superior performance over a wider range of temperatures.
Secondly, the viscosity of the grease is an important factor. The base oil viscosity of a grease is critical to its performance and is determined by the speed and dimensions of the bearing. A general-purpose grease typically has a viscosity of ISO 460 or higher.
Thirdly, the texture of the grease is an important consideration. The National Lubricating Grease Institute (NLGI) assigns grades that describe the thickness of the grease, with NLGI #2 being the most common and indicating a solid, paste-like texture. As you move up from NLGI #2, the texture becomes even more solid, while moving down results in a wetter and more slippery texture.
Additionally, it is important to match the base stock of the grease to your specific requirements. For instance, if you require a lithium-based grease, it is crucial to select a product that is lithium-based and not calcium or aluminium-based.
Finally, colour can also be an important indicator when selecting grease. "Gray grease", for instance, indicates the presence of a molybdenum (moly) additive, which is commonly recommended for use in major off-road equipment and by major OEMs like Caterpillar and John Deere.
By considering these factors and consulting experts when needed, you can choose the right grease for your Chicago Electric DA Polisher, ensuring optimal performance and longevity.
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Applying the new grease
To apply the new grease, you will need a screwdriver, long-nose pliers, a wrench, and hex key. You should also have some synthetic grease.
Firstly, use the wrench to reposition the balance block underneath the backing plate. Then, using the same technique as when preparing a peanut butter and jelly sandwich, spread out the synthetic grease into the reducer block. Don't forget the narrow groove under the big gear and the fore cover.
Revert to the previous process and reinstall the backing plate.
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Re-installing the backing plate
It is recommended to use a 5" backing plate, as the 7" stock plate is too big and may be uneven. The Griot's 5-inch backing plate, paired with a flat buff and shine pad, is a good option. It is also important to ensure that the backing plate is centred perfectly.
If you are using a Chicago Electric DA Polisher, the 'Lake Country' 5" backing plate is a great addition to the tool. It doesn't have the unshakable 'wobble' that the HF 'Warrior' backing plate has. You can get it on Amazon for around $15-20.
It is worth noting that some users have reported harsh vibrations when using the Chicago Electric DA Polisher, which may be due to the backing plate. If you experience this issue, exchanging the machine for a different one with a 5" backing plate is recommended.
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Frequently asked questions
You will need a screwdriver, a long nose plier, a wrench, a hex key, and some synthetic grease. First, use the wrench to reposition the balance block underneath the backing plate. Then, spread the synthetic grease into the reducer block. Don't forget the narrow groove under the big gear and the fore cover. Finally, revert to step 7 and reinstall the backing plate.
You should use synthetic grease. One user recommends the extreme pressure grease with item number 40710.
It is not clear how often you should replace the grease in your Chicago Electric DA polisher. However, one user on Reddit performed a grease mod two months after purchasing their polisher.
