Is your MTD snowblower struggling to clear heavy snow, or are you preparing for essential maintenance? The auger, the rotating helical component that pulls snow into the impeller, is a critical part of your snowblower's performance. Over time, it can become clogged, damaged, or simply require lubrication, making its removal a necessary task for any homeowner looking to keep their equipment in top working order. This guide will walk you through the process of safely and effectively removing the auger from your MTD snowblower.
Understanding how to properly access and remove the auger not only empowers you to perform routine maintenance but also helps in diagnosing and fixing common snowblower issues. By following these detailed instructions, you'll gain the confidence to tackle this task, saving you time and money on professional repairs. We'll cover everything from necessary tools and safety precautions to the step-by-step disassembly and reassembly process, ensuring your snowblower is ready for the next snowfall.
Safety First: Preparing for Auger Removal
Before you even think about touching a wrench, prioritizing safety is paramount. Snowblowers are powerful machines, and even when turned off, residual energy can be present. Always disconnect the spark plug wire to prevent accidental engine starts. This is the single most important safety step you can take. Additionally, ensure the snowblower is on a stable, level surface. If you're working in a garage or shed, make sure there's adequate lighting and ventilation.
Next, gather all the necessary tools and supplies. You'll likely need a socket set with various sizes, wrenches, screwdrivers (both Phillips and flathead), a pry bar, penetrating oil, a wire brush, gloves, and safety glasses. Having everything readily available will streamline the process and prevent you from having to search for tools mid-task. It's also a good idea to have a container or tray to keep track of removed bolts and hardware, preventing them from getting lost.
Finally, consult your MTD snowblower's owner's manual. Different models may have slight variations in their auger assembly. Your manual will provide specific diagrams and instructions tailored to your particular unit, which can be invaluable. Familiarizing yourself with the general layout and identifying key components before you begin will make the entire process smoother and less prone to errors.
Accessing the Auger: Disassembling the Snowblower Housing
The first major step in removing the auger is gaining access to it by disassembling the front housing of the snowblower. This typically involves removing a series of bolts that secure the main housing to the frame. These bolts can often be found around the perimeter of the housing, as well as on the underside. Pay close attention to the types of fasteners used; some may be hex bolts, while others might be carriage bolts with nuts.
Once the exterior bolts are removed, you may need to gently pry the housing away from the main body of the snowblower. Be careful not to force it, as there might be hidden clips or connections. Sometimes, the shear pins that connect the auger to the drive shaft are located on the exterior of the housing, and you'll need to access these before the housing can be fully removed. If your model has a separate chute assembly, you might need to detach that as well, as it can obstruct the removal of the main housing.
With the housing loosened or detached, you should now have a clear view of the auger assembly. This is where you'll see the auger itself, the drive shaft it's attached to, and potentially the impeller if it's a two-stage model. Take a moment to observe how everything is connected before proceeding to the next stage of disassembly.
Detaching the Auger: Shear Pins and Drive Shafts
The auger is typically connected to the drive shaft by shear pins. These are designed to break under extreme stress, protecting the more expensive components of the snowblower from damage. Locate these shear pins, which are usually small bolts with a cotter pin or a nut securing them. You'll need to remove the cotter pin or nut and then drive out the shear pin itself. A hammer and punch can be useful here, but be gentle to avoid damaging the surrounding components.
Once the shear pins are removed, the auger should be free from the drive shaft. However, it might still be held in place by other fasteners or simply stuck due to rust or debris. If the auger is stubborn, a liberal application of penetrating oil to the connection points can help loosen any seized parts. Allow the oil to soak in for a few minutes before attempting to separate the auger.
With the shear pins out and any seized parts loosened, you should be able to carefully slide the auger off the drive shaft. In some cases, you might need to gently wiggle or pry the auger to free it completely. If it's a two-stage snowblower, the impeller is often attached to the same shaft behind the auger, and you may need to remove the impeller as well, depending on the nature of your maintenance.
Maintenance and Reassembly: Cleaning, Lubricating, and Reattaching
With the auger removed, this is the ideal time for thorough cleaning and maintenance. Use a wire brush to remove any accumulated snow, ice, mud, or debris from the auger itself, the drive shaft, and the inside of the housing. Inspect the auger for any signs of wear or damage, such as bent flights or cracks. If the damage is significant, replacement might be necessary.
Next, lubricate the drive shaft and any moving parts that will come into contact with the auger. A good quality grease or multi-purpose lubricant will prevent future seizing and ensure smooth operation. Apply a thin, even coat. Also, check the condition of the drive belts and pulleys while you have access; this is a convenient time to replace worn belts.
Reassembly is essentially the reverse of disassembly. Carefully slide the auger back onto the drive shaft, ensuring it's properly aligned. Reinsert new shear pins, making sure they are securely fastened with their cotter pins or nuts. Reattach the housing, ensuring all bolts are tightened appropriately, but avoid overtightening, which can strip threads or crack plastic components. Finally, reconnect the spark plug wire.
Troubleshooting Common Auger Issues
One of the most common issues encountered during auger removal is seized shear pins or a stuck auger. If penetrating oil isn't working, a gentle application of heat from a heat gun (not an open flame) can sometimes help expand the metal and break the bond. Always proceed with caution when applying heat to machinery. Another common problem is stripped bolt heads or threads. If this happens, you may need to use a bolt extractor or drill out the damaged fastener.
When reassembling, ensure you are using the correct size and type of shear pins. Using pins that are too strong can lead to damage to the gearbox or drive system if an obstruction is encountered. Conversely, pins that are too weak will shear too easily, causing frequent interruptions during operation. Always refer to your owner's manual for the correct specifications.
If you find that the auger is still not turning freely after reassembly, double-check that all components are properly aligned and that no debris is obstructing the movement. Inspect the drive belts for proper tension and alignment. Sometimes, a bent drive shaft can also cause issues, which would require more in-depth inspection and potentially professional repair.
Key Takeaways
- ✓ Always disconnect the spark plug wire before starting any maintenance.
- ✓ Gather all necessary tools and consult your owner's manual beforehand.
- ✓ Shear pins are crucial safety devices; replace them with the correct type.
- ✓ Thoroughly clean and lubricate components during reassembly.
- ✓ Inspect the auger for wear and damage while it is removed.
Frequently Asked Questions
How often should I remove my MTD snowblower auger for maintenance?
You don't necessarily need to remove the auger for routine maintenance every time. However, it's advisable to remove it annually for a thorough cleaning and lubrication, especially after a heavy-use season. You should also remove it if you suspect damage, if it's not turning properly, or if you're experiencing reduced snow-clearing performance.
What are shear pins and why are they important?
Shear pins are small bolts designed to break under excessive force. They act as a sacrificial component, protecting the more expensive parts of your snowblower, such as the gearbox and drive shaft, from damage if the auger hits a solid object like a rock or a thick chunk of ice. When a shear pin breaks, the auger stops turning, preventing further damage.
My auger is stuck. What can I do to remove it?
If your auger is stuck, first ensure all shear pins are completely removed. Apply a generous amount of penetrating oil to the connection point between the auger and the drive shaft and let it soak for at least 15-30 minutes, or even longer. You can then try gently wiggling the auger or using a rubber mallet to tap it loose. Avoid excessive force, which could cause damage. If it remains stuck, a heat gun (used cautiously) might help expand the metal slightly.
What kind of lubricant should I use on the auger drive shaft?
A high-quality multi-purpose grease or a specialized auger lubricant is recommended. These lubricants are designed to withstand cold temperatures and provide long-lasting protection against rust and corrosion. Avoid using standard motor oil, as it may not provide adequate protection or adhere properly to the metal surfaces.
Can I replace the auger myself if it's damaged?
Yes, if the damage is minor and you are comfortable with mechanical tasks, you can often replace the auger yourself. You'll need to order the correct replacement auger for your specific MTD snowblower model. The process will involve removing the old auger as described in this guide and then installing the new one, ensuring it's properly aligned and secured with new shear pins. For significant damage or if you're unsure, it's best to consult a professional.
Conclusion
Removing the auger from your MTD snowblower, while seemingly daunting, is a manageable task that can significantly contribute to the longevity and performance of your equipment. By following a systematic approach, prioritizing safety, and understanding the function of each component, you can confidently undertake this maintenance. We've covered the essential steps from initial preparation and housing disassembly to detaching the auger, performing necessary maintenance, and reassembling it correctly.
Don't let a poorly performing snowblower leave you stranded in the snow. Empower yourself with the knowledge to perform this crucial maintenance. Regularly inspecting and caring for your snowblower's auger will ensure it's ready to tackle even the heaviest snowfalls, providing reliable service for years to come. Take the time to perform this maintenance, and enjoy a more efficient and effective snow-clearing experience.
