Rebuilding Your Craftsman Air Compressor Pump: A Complete Guide
My old Craftsman air compressor has been a workhorse for years, but recently the pump started making concerning noises. Instead of buying a whole new compressor, I decided to try rebuilding it myself. This proved to be a much more affordable solution, and a surprisingly rewarding one! This guide will walk you through everything you need to know about finding and using a Craftsman air compressor pump rebuild kit, helping you save money and extend the life of your valuable tool. You’ll learn about identifying the right kit, the process of the rebuild itself, and how to avoid common pitfalls.
Identifying the Right Craftsman Air Compressor Pump Rebuild Kit
Choosing the correct Craftsman air compressor pump rebuild kit is crucial for a successful rebuild. This section will guide you through the process of identifying your compressor model and finding the compatible kit.
Finding Your Compressor’s Model Number
- Look for a model number plate on the compressor itself. This plate usually contains the model number, serial number, and other identifying information. The model number is essential for finding the correct rebuild kit, as different models have different pump sizes and configurations.
- Check your owner’s manual. If you still have the owner’s manual for your compressor, it should list the model number prominently. This manual might also provide valuable troubleshooting tips and maintenance information.
- Search online resources. If you can’t locate the model number on the compressor or in the manual, try searching online for images of your Craftsman compressor model. Compare images to identify the model number.
Matching the Kit to Your Compressor
Once you’ve identified your compressor model, carefully match it to the specifications of the rebuild kit. The kit should explicitly list compatible model numbers. Always double-check compatibility before purchasing.
- Check the pump displacement. The pump displacement (measured in cubic feet per minute or CFM) indicates the amount of air the pump can move. Ensure your chosen kit is designed for the correct CFM range.
- Verify the tank size. The tank size is another important specification. The tank needs to be appropriately sized for the pump’s capacity.
- Confirm the motor type. The motor type can also influence the type of rebuild kit required. Some rebuild kits only apply to particular motor types.
Preparing for the Craftsman Air Compressor Pump Rebuild
Before you begin the rebuild, proper preparation is essential to ensure a smooth and efficient process. This section outlines the crucial steps to take before you start.
Gathering the Necessary Tools
- A set of screwdrivers (Phillips and flathead). These are essential for dismantling and reassembling the compressor. Having a variety of sizes helps ensure a proper fit for each screw.
- Wrench set (metric and standard). Wrenches are essential for tightening and loosening various nuts and bolts during the pump disassembly and reassembly. Have a range of sizes at your disposal.
- Pliers (needle-nose and slip-joint). Pliers are beneficial for holding small parts or accessing hard-to-reach areas during the pump disassembly and reassembly.
- Safety glasses and gloves. Personal protection is essential throughout the whole process to avoid injury from flying parts or chemicals.
Disconnecting the Compressor
- Unplug the compressor from the power source. This is the most important safety step to prevent electrical shock during the repair process.
- Release any remaining pressure in the tank. Consult your owner’s manual for the proper pressure release procedure. This is crucial to prevent injury from sudden pressure release.
- Disconnect the air lines. Once the tank is depressurized, carefully disconnect all air lines from the compressor.
The Craftsman Air Compressor Pump Rebuild Process
This section provides a step-by-step guide to rebuilding your Craftsman air compressor pump using your new rebuild kit. Remember to always refer to the instructions included with your specific kit.
Disassembling the Pump
Carefully disassemble the pump, following the instructions provided in your rebuild kit. Take pictures as you go to help with reassembly. This is essential for ensuring that you are able to reassemble the pump correctly.
- Remove the pump head. This may involve removing several screws or bolts. Be sure to note the position of each part for easier reassembly.
- Inspect the cylinder and piston. Check for damage to the cylinder wall and inspect the piston rings for wear and tear. Replace worn or damaged parts as necessary.
- Replace the valves. The intake and exhaust valves are critical for proper pump function. Inspect and replace these valves as per the kit instructions.
Installing New Parts from the Rebuild Kit
Once the pump is disassembled and cleaned, install the new parts from your Craftsman air compressor pump rebuild kit. Carefully follow the included instructions, which will provide specific guidance for your model.
- Install the new piston rings. Ensure they are seated correctly in the piston grooves. Incorrect placement of the rings can result in poor compression and ultimately lead to pump failure.
- Install the new valves. Make sure the valves are correctly aligned and seated in their respective ports. This is crucial for effective pump operation.
- Reassemble the pump head. Carefully reassemble the pump head, aligning all parts correctly and tightening the fasteners to the manufacturer’s specifications.
Testing the Rebuilt Pump
After reassembling the pump, test its functionality before reinstalling it in the compressor. This step is crucial to ensure that the rebuild was successful.
- Connect the pump to a power source. Once the pump is reassembled into the compressor housing, test it with a power source. Make sure to have all safety precautions in place before powering up the machine.
- Check for leaks. Inspect the connections and seals for leaks. If leaks are detected, inspect the reassembly process. Leaks can significantly reduce the performance and lifespan of the compressor.
- Monitor the pressure. Allow the compressor to run for a period, and monitor the pressure gauge. If the pressure is building up correctly, the rebuild is likely a success.
Troubleshooting Common Craftsman Air Compressor Issues
Even with a successful rebuild using a Craftsman air compressor pump rebuild kit, you might encounter some problems. This section addresses common issues and solutions.
Compressor Won’t Build Pressure
If your compressor isn’t building pressure after the rebuild, there could be several reasons. Check the valve seals, piston rings, and cylinder for leaks or damage. Make sure the air intake is clear. If the problem persists, you might need to re-examine the reassembly process.
Excessive Noise from the Pump
An excessively noisy pump after a rebuild might indicate a problem with the alignment of parts or the use of worn components. Check the pump for any binding or friction and ensure that all components are correctly lubricated.
Oil Leaks
Oil leaks from the pump are usually caused by damaged seals or gaskets. Make sure all seals and gaskets are installed correctly and in good condition. Use only the recommended compressor oil for the best results.
FAQ
What tools do I need to rebuild my Craftsman air compressor pump?
You will need a basic set of tools including screwdrivers, wrenches, pliers, and safety glasses. Refer to the specific instructions included with your Craftsman air compressor pump rebuild kit for a comprehensive list of required tools.
How often should I rebuild my air compressor pump?
The frequency of rebuilds depends on usage and maintenance. Regular maintenance, such as oil changes and cleaning, can extend the life of your pump. However, significant wear and tear may necessitate a rebuild every few years, depending on use.
Where can I find a Craftsman air compressor pump rebuild kit?
You can typically find these kits online from retailers like Amazon, eBay, and specialized tool suppliers. Ensure the kit is compatible with your specific Craftsman air compressor model.
What if I damage a part during the rebuild?
If you damage a part during the rebuild, you may need to replace it with a new part, potentially requiring another trip to a supplier. It is usually easier to replace the part rather than attempt to repair it.
Is it cheaper to rebuild or replace my air compressor?
In many cases, rebuilding is significantly cheaper than purchasing a new air compressor, especially if you can perform the rebuild yourself. However, factor in the cost of the rebuild kit, tools, and potential extra parts.
What type of oil should I use?
Always use the type of oil specified by the manufacturer in the owner’s manual of your Craftsman air compressor. Using the wrong oil can damage the pump’s internal components.
Can I use a rebuild kit from another brand?
While it’s possible, it’s generally not recommended. Using a kit not specifically designed for your Craftsman compressor model might lead to compatibility issues and potential performance problems.
Final Thoughts
Rebuilding your Craftsman air compressor pump using a Craftsman air compressor pump rebuild kit can be a cost-effective and rewarding experience. By carefully following the steps outlined in this guide, and taking your time, you can extend the life of your compressor and save money. Remember safety is paramount; always prioritize your safety by disconnecting power and releasing pressure before starting any repairs. Now that you are equipped with the necessary knowledge, get started on that rebuild!