Molly Ayala
Warner Electric has become the recognised leader of clutch/brake technology for all types of commercial and residential power lawn mowers and garden tractors. Their power-take-off clutches (PTO) and clutch/brake systems allow operators to remotely control tractor-powered implements and other mechanical systems. Warner Electric Clutches are also used in other vehicle-installed systems, such as superchargers, air compressors, and hybrid drives. While these clutches are built to last, they may occasionally need to be repaired or replaced. This process may involve grinding the heads off rivets, replacing bearings, and reassembling the clutch.
Characteristics and Values Table for Removing a Warner Electric Clutch
| Characteristics | Values |
|---|---|
| Bearings | Large circlip over one of the bearings |
| Backplate | Three studs with springs and nylon insert nuts |
| Pressure plate | Held in place by backplate |
| Pulley | Unable to spin independently of the keyed end of the PTO |
| Rivets | Three rivets sticking up on the pulley side |
| Clutch plate | Can be removed by punching out the rivets |
| Bearing | Needs replacement |
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What You'll Learn
Removing the circlip and backplate
First, it is important to understand the components involved. The circlip is a large ring that fits over one of the bearings to keep it in place. The backplate, on the other hand, is a protective cover that shields the inner workings of the clutch. It is secured by three studs with springs and nylon insert nuts, which appear to hold a pressure plate in place over the clutch.
To begin the removal process, you will need to gain access to the circlip. Using a specialized tool like a circlip plier or a thin screwdriver, carefully reach the circlip through the available space. Gently press or pry the circlip to release it from its groove. It may be tight, so a gentle tapping motion with a lightweight hammer may help to loosen it. Be careful not to bend or distort the circlip during this process, as it needs to be reusable. Once the circlip is removed, set it aside safely.
With the circlip removed, the bearing it was holding in place will now be accessible. Carefully extract the bearing, ensuring that you do not damage its races or the surrounding components. A bearing puller tool may be useful for this step, but be sure to use it gently to avoid damage. Once the bearing is removed, set it aside with the circlip.
Now, focus on the backplate. As it is secured by three studs with springs, you will need to compress these springs to remove the backplate. Using a tool like a pair of needle-nose pliers, carefully compress each spring while also holding the nylon insert nut with another tool, such as a small open-ended wrench. This will prevent the nut from turning as you remove the stud. With the spring compressed, unscrew the nut and remove the stud. Repeat this process for the remaining two studs. With all three studs removed, the backplate should now be free. Carefully lift and remove the backplate, being mindful of any attached components, such as the pressure plate mentioned earlier.
With these steps completed, you will have successfully removed the circlip, bearing, and backplate from your Warner Electric clutch. Remember to keep your workspace organized and to handle all components with care to ensure a successful and efficient removal process.
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Dismantling the pulley
Firstly, identify the components that hold the pulley in place. There may be a large circlip over one of the bearings, as well as a backplate with studs, springs, and nylon insert nuts that secure a pressure plate over the clutch. Understanding how these parts interact will help you plan the disassembly process.
Next, you will need to separate the components. One approach is to use a three-leg puller to gently pry the parts apart. This will allow you to access the internal components and determine if they can be cleaned, repaired, or replaced. If the clutch is binding internally, as suggested by the inability to spin the pulley independently, disassembly is often necessary for inspection and repair.
When dealing with the pulley specifically, one common suggestion is to address the rivets. If there are rivets on the pulley side, grinding their heads off and then punching them out can enable you to remove the clutch plate. This provides access to the bearing, which may be rough or damaged and in need of replacement. Once the necessary repairs or replacements are made, the rivets can be pressed back into place and welded to secure them.
It is important to note that before beginning any grinding or welding operations, ensure you have the necessary safety equipment and skills. Additionally, having replacement rivets of the correct size on hand is advisable to avoid complications during reassembly.
By following these steps and paying attention to the specific details of your Warner Electric Clutch, you should be able to successfully dismantle the pulley for maintenance, repair, or replacement.
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Grinding the flange
Firstly, identify the three rivets sticking up on the pulley side of the clutch. You will need to grind the heads off these rivets. Once the heads have been ground down, you can punch out the rivets themselves. This will allow you to remove the clutch plate.
After removing the clutch plate, you can focus on replacing the bearing. This is a crucial step to address the issue of the rough bearing. Once the new bearing is in place, you can press the rivets back into their original positions.
To secure the rivets and ensure they remain in place, the final step is to weld the ends of the rivets. This can be done with a wire welder, and Locktite can be used to further reinforce the connection. By following these steps, you can effectively address the issue of a rough bearing in your Warner Electric clutch by grinding the flange and completing the subsequent installation process.
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Removing the clutch plate
Firstly, identify the three rivets on the pulley side of the clutch. These may need to be ground down to remove the clutch plate. Using a grinder, carefully remove the heads of the rivets. Once the heads are removed, punch out the rivets themselves. This will release the clutch plate, which can then be taken out.
At this point, you may need to replace the bearing. If so, press the rivets back into place and weld the ends to secure them. Ensure any new or existing bearings are in good condition and not rough, as this will impact the performance and longevity of the clutch.
If your clutch has a backplate, you will need to remove the nuts and springs holding the pressure plate in place. This will allow you to access the clutch plate for removal. It is important to note that some clutches may have a circlip over one of the bearings, so be sure to look out for this and remove it carefully.
Additionally, some clutches may be staked in. In this case, you may need to grind the flange off to remove the clutch plate. This process can be delicate, so take care not to damage other components.
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Replacing the bearing
To replace the bearing of a Warner Electric clutch, you will need to first access the clutch by removing any components blocking your path. This may include removing the pulley, which can be done by grinding the heads off the three rivets on the pulley side and then punching out the rivets. Once the pulley is removed, you can take out the clutch plate. At this stage, you will be able to replace the bearing.
It is important to note that you should have the necessary replacement parts and tools on hand before beginning the process. This includes the new bearing, as well as any tools required for removal and installation, such as a grinder, punch, and rivets.
When replacing the bearing, ensure that it is the correct size and type for your specific clutch application. Follow any manufacturer guidelines or recommendations for bearing replacement. This may include specific installation procedures, lubrication requirements, or torque specifications.
After installing the new bearing, you will need to reassemble the clutch by pressing the rivets back into place and welding their ends to secure them. Ensure that all components are aligned correctly and securely fastened before operating the equipment.
If you encounter any difficulties during the bearing replacement process, it is recommended to seek assistance from a qualified technician or a mechanic with experience in Warner Electric clutch repair. They can provide additional guidance and ensure that the job is completed correctly and safely.
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Frequently asked questions
If your clutch is not working properly, it may need to be removed and repaired or replaced. Signs of a malfunctioning clutch include a pulley that does not spin independently of the keyed end of the PTO that fits on the crankshaft, indicating internal binding.
You will need a 3-leg puller to separate the components. You may also need a wire welder, Locktite, and a grinder.
First, separate the components with a 3-leg puller. Then, grind the heads off the three rivets on the pulley side, punch out the rivets, and remove the clutch plate. Finally, replace the bearing and press the rivets back in, welding the ends to keep them in place.
Yes, it is important to ensure that you have the necessary skills and knowledge to perform the removal safely and effectively. Always consult relevant manuals and resources, and consider seeking professional assistance if you are unsure about any aspect of the process.
One common issue is a seized clutch, which can be challenging to disassemble. In such cases, you may need to grind the flange off and drive it out. Additionally, ensure that you have the correct replacement parts readily available before beginning the removal process to avoid unnecessary delays.
