Changing the driven wheels on a Craftsman 917.370440 lawn tractor restores the machine’s ability to self-propel. This involves removing the old, worn, or damaged wheels and installing new ones. This process typically requires basic hand tools and can often be completed by the owner.
Functional drive wheels are essential for the proper operation of a self-propelled lawn tractor. Without them, the tractor cannot move forward or backward under its own power, making mowing a difficult and strenuous task. Restoring this functionality through wheel replacement contributes significantly to the ease of lawn maintenance and extends the usable life of the machine. Over time, drive wheels wear down, lose traction, or become damaged. This component’s design has evolved alongside advancements in lawn tractor technology to improve durability and performance.
The following sections will detail the procedure for replacing the drive wheels on a Craftsman 917.370440, including necessary tools, safety precautions, step-by-step instructions, and troubleshooting tips.
1. Correct Wheel Identification
Correct wheel identification is paramount for successful drive wheel replacement on a Craftsman 917.370440 lawn tractor. Using incorrect wheels can lead to improper function, premature wear, and potential damage to other components. Accurate identification ensures compatibility with the tractor’s drive system and overall performance.
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Determining Wheel Size and Type
The Craftsman 917.370440 requires specific wheel dimensions and tread patterns. These specifications ensure proper ground clearance, traction, and compatibility with the transmission. Information regarding the correct wheel size and type can be found in the owner’s manual or by consulting a parts retailer. Using incorrect dimensions can lead to reduced performance and potential damage.
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Identifying OEM Part Numbers
Original Equipment Manufacturer (OEM) part numbers provide the most accurate way to identify the correct replacement wheels. These numbers ensure compatibility and quality. OEM part numbers can be found in the owner’s manual, on existing parts, or through online parts catalogs. Using aftermarket wheels without verifying compatibility can lead to fitment issues and reduced performance.
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Considering Tire Tread and Material
Different tire treads and materials offer varying levels of traction and durability. The appropriate tread pattern depends on the typical terrain and operating conditions. Choosing the right material ensures adequate wear resistance and longevity. Using incorrect tread patterns or materials can lead to reduced traction and premature wear.
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Verifying Axle Compatibility
The replacement wheels must be compatible with the axle diameter and keyway of the Craftsman 917.370440. This ensures proper fitment and prevents slippage or damage to the axle. Measurements can be taken from the existing wheels and axle to confirm compatibility. Ignoring axle compatibility can lead to installation issues and potential safety hazards.
Careful attention to these factors ensures the chosen replacement wheels are correct for the Craftsman 917.370440, facilitating a successful replacement process and optimal tractor performance. Incorrect wheel selection can compromise the drive system, resulting in inefficient operation and potential mechanical issues.
2. Proper Tools and Equipment
Employing appropriate tools and equipment is essential for efficient and damage-free drive wheel replacement on a Craftsman 917.370440 lawn tractor. Utilizing incorrect or inadequate tools can prolong the process, increase the risk of injury, and potentially damage components. Proper tools ensure the task is completed correctly and efficiently.
Specific tools are required to remove and install the drive wheels effectively. A jack is necessary to raise the tractor and provide access to the wheels. Jack stands are crucial for safety, ensuring the tractor remains stable during the procedure. A lug wrench or socket set with the correct size is required for removing and tightening lug nuts. Penetrating oil can be helpful for loosening stubborn nuts. A rubber mallet can assist with seating the wheels correctly. Using tools like a breaker bar instead of a standard wrench may strip lug nuts or damage the wheel hub. Improper jack placement can damage the tractor frame. Failure to use jack stands creates a significant safety hazard.
Selecting the correct tools contributes significantly to the overall success of the drive wheel replacement. It minimizes the risk of damage to the tractor and ensures the procedure is performed safely and efficiently. Appropriate tools allow for proper torque application to lug nuts, preventing loosening or over-tightening. They also facilitate the removal of stubborn components without causing damage. The correct tools contribute to a smoother and more efficient process, minimizing downtime and maximizing the lifespan of the new components. This meticulous approach underscores the importance of proper tooling in maintaining the integrity and performance of the Craftsman 917.370440.
3. Safe Jacking Procedures
Safe jacking procedures are paramount when replacing drive wheels on a Craftsman 917.370440 lawn tractor. Elevated stability is essential to prevent accidents during component removal and installation. Improper jacking can lead to the tractor collapsing, causing potential injury and equipment damage. Choosing the correct jacking points and utilizing jack stands ensures a secure working environment.
The Craftsman 917.370440’s frame features designated jacking points specifically designed to support the tractor’s weight when lifted. Locating these points, often indicated in the owner’s manual, is crucial for preventing frame damage. Once the tractor is raised, jack stands provide redundant support, safeguarding against accidental slippage or jack failure. Positioning jack stands on solid, level ground further enhances stability. A failure to employ jack stands could result in the tractor falling onto the individual performing the repair, leading to serious injury. Similarly, using incorrect jacking points can deform the frame, compromising the tractor’s structural integrity and potentially affecting other components.
Adhering to safe jacking procedures minimizes risks associated with working beneath a raised lawn tractor. This practice prevents accidents and ensures the drive wheel replacement process can proceed safely and efficiently. Beyond the immediate task, understanding and applying these procedures contribute to overall workshop safety and responsible equipment maintenance. Neglecting these precautions can have significant consequences, impacting both personal safety and the longevity of the equipment.
4. Accurate Installation Techniques
Accurate installation techniques are crucial for the successful replacement of drive wheels on a Craftsman 917.370440 lawn tractor. Proper installation ensures the functionality and longevity of the drive system, contributing to the overall performance and lifespan of the machine. Deviation from these techniques can lead to immediate or eventual mechanical issues, affecting the tractor’s operation and potentially causing safety hazards.
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Securing Lug Nuts with Correct Torque
Applying the correct torque to lug nuts is essential for secure wheel attachment and prevents damage to the wheel studs and hub. Over-tightening can strip threads or warp components, while under-tightening risks wheel detachment during operation. A torque wrench ensures accurate tightening according to manufacturer specifications. This precision safeguards against potential wheel detachment, maintaining operational safety and preventing premature wear.
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Proper Key Engagement
Ensuring proper engagement of the keyway on the axle with the key on the wheel is critical for transmitting power effectively. A misaligned or improperly seated key can cause slippage, reducing drive power and potentially damaging the axle or wheel hub. Careful alignment and a firm press fit are essential for a secure connection. This secure connection guarantees efficient power transmission and prevents premature component wear.
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Aligning Wheel with Axle
Proper alignment of the wheel with the axle ensures smooth operation and minimizes stress on related components. Misalignment can cause wobbling, uneven tire wear, and strain on bearings and other drive train components. Careful visual inspection and adjustment are necessary during installation. This careful approach maximizes component lifespan and contributes to smooth, efficient operation of the drive system.
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Verifying Free Rotation
After installation, verifying free wheel rotation is essential for confirming proper fitment and function. Any resistance or binding indicates a potential issue with alignment, key engagement, or other components. Addressing these issues before operation prevents further damage and ensures optimal performance. This final check confirms the success of the installation process and contributes to the overall safety and longevity of the machine.
Accurate execution of these installation techniques ensures the newly installed drive wheels function correctly and contribute to the safe and efficient operation of the Craftsman 917.370440. Neglecting these procedures can lead to a range of issues, compromising the tractor’s performance and potentially creating safety hazards. Diligence in these practices maximizes the lifespan of the components and contributes to the overall reliability of the machine.
5. Secure Key and Axle Fit
A secure fit between the wheel key and the axle is fundamental to the successful operation of the Craftsman 917.370440’s drive system after a wheel replacement. This small, often overlooked component plays a critical role in transmitting torque from the axle to the wheel, enabling the tractor’s self-propulsion. Without a properly seated key, the connection between the axle and wheel is compromised, leading to slippage and inefficient power transfer. This slippage manifests as reduced traction, difficulty moving uphill, and excessive wear on both the key and the keyway in the axle and wheel hub. In extreme cases, a completely sheared key can render the tractor immobile.
Consider a scenario where a landscaper replaces the drive wheels on their Craftsman 917.370440 but fails to ensure a secure key fit. During a mowing job on a slight incline, the wheels begin to slip, preventing the tractor from climbing the slope. This slippage not only reduces efficiency but also increases the risk of the tractor rolling backward, potentially creating a hazardous situation. Another example involves a homeowner who replaces their drive wheels without properly seating the key. Over time, the continuous slippage wears down the key and keyway, eventually requiring more extensive and costly repairs to the axle and wheel hub. These examples illustrate the practical importance of ensuring a secure key and axle fit during drive wheel replacement.
Ensuring a secure key and axle fit is essential for maximizing the effectiveness and longevity of the drive system following wheel replacement on the Craftsman 917.370440. Neglecting this critical detail can lead to a range of issues, from reduced performance and increased wear to potential safety hazards. A proper fit guarantees efficient power transfer, minimizes component wear, and contributes to the overall reliability and safety of the machine. This understanding underscores the importance of meticulous attention to detail during the replacement process and highlights the significance of seemingly small components in maintaining the optimal function of complex machinery.
6. Post-Replacement Testing
Post-replacement testing is a crucial final step in the process of replacing drive wheels on a Craftsman 917.370440 lawn tractor. This procedure verifies the effectiveness of the replacement and ensures the tractor’s drive system functions correctly. Testing identifies any overlooked issues during installation, preventing potential damage and ensuring safe operation. Without post-replacement testing, underlying problems may go unnoticed, leading to premature wear, reduced performance, or safety hazards.
Consider a scenario where an individual replaces the drive wheels but neglects post-replacement testing. A loose lug nut, missed during installation, could work itself free during operation, potentially causing wheel detachment and loss of control. Alternatively, an improperly seated wheel key might not be immediately apparent but could lead to slippage and eventual damage to the axle or wheel hub. Post-replacement testing serves as a critical check, mitigating these risks. A simple test drive, engaging the drive system in both forward and reverse on a level surface, can reveal such issues before they escalate into more significant problems. Observing the tractor’s movement for any unusual vibrations, noises, or slippage provides valuable insights into the installation’s success. Further checks, such as verifying proper lug nut torque and visually inspecting the key engagement, add an extra layer of assurance.
Post-replacement testing, therefore, represents a critical quality control measure in the drive wheel replacement process. It provides an opportunity to identify and rectify any installation oversights, ensuring the long-term functionality and safety of the Craftsman 917.370440. This practice minimizes the risk of future mechanical issues, extends the lifespan of components, and contributes to the overall reliability of the machine. Proper post-replacement testing demonstrates a commitment to thorough maintenance practices, maximizing the return on investment in new components and ensuring the safe and efficient operation of the equipment.
7. Regular Maintenance Practices
Regular maintenance practices play a vital role in maximizing the lifespan of drive wheels and related components on a Craftsman 917.370440 lawn tractor, often delaying or even preventing the need for premature replacement. Consistent upkeep minimizes wear and tear, contributing to optimal performance and long-term cost savings. Neglecting these practices can accelerate component degradation, necessitating more frequent replacements and potentially leading to more extensive repairs.
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Routine Cleaning
Accumulated debris, such as grass clippings, mud, and dirt, can accelerate wear on drive wheels and axles. Regular cleaning removes these abrasive materials, preserving the integrity of the components. For example, neglecting to clean the drive wheels after mowing in wet conditions can lead to corrosion and premature tire wear. This seemingly simple practice significantly contributes to the longevity of the drive wheels.
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Lubrication
Proper lubrication of moving parts within the drive system, such as axle bearings and bushings, is essential for minimizing friction and wear. Regular lubrication, using the appropriate grease, ensures smooth operation and extends the lifespan of these components. Failure to lubricate these parts can lead to increased friction, heat buildup, and premature wear, ultimately necessitating earlier drive wheel replacement. For instance, dry axle bearings can seize, causing damage to the axle and requiring costly repairs.
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Tire Pressure Monitoring
Maintaining correct tire pressure is crucial for optimal traction and even wear. Under-inflated tires increase rolling resistance, strain the drive system, and lead to uneven wear patterns. Over-inflated tires reduce traction and increase the risk of punctures. Regularly checking and adjusting tire pressure ensures proper performance and extends tire life. Consistent monitoring prevents premature wear and maintains optimal performance of the drive system.
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Inspection for Wear and Damage
Regular inspections of the drive wheels and related components can identify early signs of wear, damage, or misalignment. Addressing these issues promptly prevents further damage and extends the lifespan of the components. For example, a worn or cracked drive belt, if left unaddressed, can lead to slippage and eventually complete failure, impacting the functionality of the drive wheels. Regular inspection allows for proactive maintenance, preventing more extensive repairs and maximizing the lifespan of the components.
These regular maintenance practices contribute significantly to the longevity and performance of the drive system on a Craftsman 917.370440 lawn tractor. By minimizing wear and tear and addressing potential issues proactively, these practices can extend the intervals between drive wheel replacements, saving time and money while ensuring optimal equipment operation. Neglecting these practices accelerates wear, increasing the frequency and cost of repairs, ultimately reducing the lifespan of the machine. A proactive approach to maintenance ensures the continued reliable performance of the tractor and maximizes its usable life.
Frequently Asked Questions
This section addresses common inquiries regarding drive wheel replacement on a Craftsman 917.370440 lawn tractor. Understanding these aspects contributes to a successful replacement process and ensures optimal tractor performance.
Question 1: How can one determine the correct size and type of replacement drive wheels for a Craftsman 917.370440?
Consulting the owner’s manual or contacting a Sears PartsDirect representative provides definitive information regarding appropriate wheel specifications. Measurements from the existing wheels can also be used to determine the correct dimensions. Using incorrect wheel sizes can adversely affect performance and damage the drive system.
Question 2: What tools are necessary for replacing drive wheels on this model?
Necessary tools typically include a jack, jack stands, a lug wrench or socket set (with appropriate size sockets), penetrating oil, and a rubber mallet. A torque wrench is recommended for ensuring proper lug nut tightness. Utilizing incorrect tools can damage components or cause injury.
Question 3: How can one ensure safe jacking procedures are followed during the replacement process?
Consulting the owner’s manual identifies designated jacking points. Using jack stands on a level surface provides essential safety and stability. Never work under a tractor supported only by a jack. Ignoring safety precautions can lead to serious injury.
Question 4: What is the significance of the key in the drive wheel assembly?
The key transmits torque from the axle to the wheel, enabling proper drive function. Ensuring its proper engagement is crucial for effective power transmission. A loose or damaged key can cause slippage and eventual component failure.
Question 5: What post-replacement checks should be performed?
Post-replacement procedures should include verifying proper lug nut torque, confirming secure key engagement, and testing the drive system in both forward and reverse on a level surface. Listen for unusual noises and observe for any vibrations or slippage. Neglecting these checks can lead to further damage or safety hazards.
Question 6: How can one extend the lifespan of newly installed drive wheels?
Regular cleaning, lubrication of axle components, maintaining correct tire pressure, and periodic inspections for wear or damage contribute significantly to the longevity of drive wheels. These practices minimize wear and tear, maximizing the lifespan of the components and reducing the need for frequent replacements.
Careful attention to these frequently asked questions ensures a successful drive wheel replacement, contributing to the safe and efficient operation of the Craftsman 917.370440.
The next section will provide a detailed, step-by-step guide for replacing the drive wheels on this specific model.
Tips for Craftsman 917.370440 Drive Wheel Replacement
This section offers practical guidance to ensure a smooth and successful drive wheel replacement process. Careful attention to these tips minimizes potential complications and maximizes the lifespan of the new components.
Tip 1: Secure the Area: Before initiating the procedure, ensure the lawn tractor is parked on a level surface, the engine is off, the parking brake is engaged, and the key is removed. This establishes a safe working environment and prevents accidental starting.
Tip 2: Consult the Manual: Refer to the owner’s manual for model-specific instructions and safety guidelines. The manual provides critical information regarding jacking points, torque specifications, and component diagrams.
Tip 3: Penetrating Oil Application: Applying penetrating oil to the lug nuts several hours before removal can significantly ease the process, particularly if they are rusted or seized. This prevents excessive force that could damage the studs.
Tip 4: Invest in Quality Replacements: Opting for high-quality replacement wheels ensures durability and optimal performance. While less expensive alternatives might be tempting, they often compromise longevity and reliability.
Tip 5: Double-Check Key Engagement: Prior to fully tightening the lug nuts, visually confirm proper engagement of the wheel key with the axle keyway. This critical step ensures proper power transmission and prevents slippage.
Tip 6: Torque Wrench Utilization: Employ a torque wrench when tightening lug nuts. This ensures proper torque application, preventing over-tightening (which can damage studs) or under-tightening (which risks wheel detachment).
Tip 7: Post-Installation Inspection: After installation, conduct a thorough visual inspection of the wheels, axles, and related components. Look for any signs of damage or misalignment. A test drive confirms proper function and reveals any overlooked issues.
Tip 8: Document the Process: Taking photos or videos during the replacement process can serve as a valuable reference for future maintenance or troubleshooting. This documentation aids in recalling specific steps and component orientations.
Adhering to these tips contributes to a successful drive wheel replacement and ensures the long-term performance and safety of the Craftsman 917.370440.
The following section provides a concise conclusion summarizing the key points discussed throughout this guide.
Conclusion
Successful drive wheel replacement on a Craftsman 917.370440 lawn tractor requires careful attention to detail, from accurate component identification and safe jacking procedures to precise installation techniques and thorough post-replacement testing. Proper tool selection and adherence to manufacturer specifications are essential for ensuring the longevity of the new components and the overall performance of the machine. Understanding the function of key components, such as the wheel key and axle keyway, and their importance in power transmission is crucial for achieving a secure and functional drive system. Regular maintenance practices, including cleaning, lubrication, and tire pressure monitoring, contribute significantly to maximizing the lifespan of the drive wheels and related components.
Proper drive wheel replacement restores essential functionality to the Craftsman 917.370440, enabling efficient and safe lawn maintenance. Diligence in following recommended procedures and proactive maintenance practices ensures optimal performance and extends the usable life of the machine. This meticulous approach to maintenance contributes not only to the longevity of the equipment but also to the safety and satisfaction of its operation. Investing time and effort in proper drive wheel replacement and ongoing maintenance represents a commitment to preserving the value and functionality of this valuable piece of equipment.
