Graco 243183 Pump for 395ST Pro B & 495ST Pro B Airless Paint Sprayers | Replacement Part

When maintaining or repairing your Graco 395ST Pro B or 495ST Pro B airless paint sprayer, the Graco 243183 pump is a key component that ensures reliable performance and consistent spray quality. Over time, wear and tear can affect the pump and its associated parts, leading to a decrease in sprayer efficiency. Replacing the pump and its parts with genuine Graco replacements like the 243183 is crucial for keeping your equipment working at its best.

In this guide, we’ll cover everything you need to know about the Graco 243183 pump and its key components, how to replace the pump, and why it's vital to use OEM (Original Equipment Manufacturer) parts.

The Graco 243183 pump is an OEM replacement part designed specifically for the Graco 395ST Pro B and 495ST Pro B airless paint sprayers. It is responsible for pressurizing the paint or coating inside the sprayer and delivering it smoothly to the spray gun. The pump is a critical part of the fluid section, and without it, your sprayer won’t be able to operate effectively.

This pump is durable, built to handle high pressure, and engineered for precision spraying, making it ideal for both residential and commercial painting projects.

Key Parts of the Graco 243183 Pump

The Graco 243183 pump is made up of several individual components that work together to deliver high performance. These parts are essential for the pump's overall functionality and must be replaced if damaged or worn out. Here’s a closer look at the key parts of the pump:

1. Pump Assembly

The pump assembly itself is the main unit that houses the internal components. It includes the piston and cylinder, which work together to create the pressure needed to push paint through the system. Over time, these components can wear down, leading to reduced performance.

2. Fluid Valve

The fluid valve regulates the flow of paint to the sprayer. If this valve becomes clogged or damaged, the sprayer may struggle to maintain a consistent spray pattern, leading to uneven application.

3. Piston & Cylinder

The piston and cylinder are integral to the pump’s operation. They generate pressure inside the pump and ensure that paint flows consistently. A worn-out piston can lead to a loss of pressure and inconsistent spraying, making it necessary to replace these parts when signs of wear appear.

4. O-Rings & Seals

O-rings and seals are small but vital parts that prevent paint from leaking during operation. If these seals become brittle or damaged, they can lead to fluid leaks, resulting in pressure loss and poor performance.

5. Check Valve

The check valve ensures that paint only flows in one direction—into the spray gun. A malfunctioning check valve can result in paint backflow or pressure issues. Replacing a damaged or worn check valve is necessary to ensure smooth operation.

Compatibility with Graco 395ST Pro B & 495ST Pro B

Graco 243183 pump is compatible with both the Graco 395ST Pro B and 495ST Pro B airless sprayers. These sprayers are designed for medium to heavy-duty applications, making them ideal for contractors and professionals. The 395ST Pro B is perfect for smaller jobs, while the 495ST Pro B is built for larger projects that require a more robust, high-performance machine.

Using the Graco 243183 pump ensures compatibility and optimal performance for both models, restoring your sprayer’s efficiency and spray consistency.

Why Use Genuine Graco Parts?

When it comes to replacing the pump and its components, it’s essential to use genuine Graco parts like the 243183 pump and its associated components. Here are a few reasons why:

1. Precise Fit and Function

Genuine Graco parts are engineered to fit and function exactly as the original parts in your sprayer. This ensures that your pump operates smoothly and efficiently, without the risk of compatibility issues that can arise with aftermarket parts.

2. Enhanced Durability

Graco parts are built to withstand the rigors of heavy use. Choosing genuine parts like the 243183 pump ensures that your equipment remains durable and reliable for the long haul.

3. Prevent Further Damage

Using subpar or aftermarket parts may cause additional wear and tear on other components of your sprayer. Genuine parts prevent this, ensuring the longevity of your entire system.

4. Warranty Protection

Using non-OEM parts can void your warranty. By choosing Graco’s genuine replacement parts, you can rest assured that your warranty remains intact, protecting your investment in the sprayer.

How to Replace the Graco 243183 Pump

Replacing the Graco 243183 pump and its parts is a straightforward process. However, proper care and attention to detail are crucial to ensure that the pump is installed correctly and functions as intended.

Step-by-Step Guide:

1. Turn Off and Depressurize the Sprayer
   • Before beginning any maintenance, always disconnect the sprayer from the power source.
   • Engage the pressure relief valve to safely depressurize the system.
2. Remove the Old Pump
   • Loosen the fasteners and remove the old pump assembly from the sprayer.
   • Be sure to disconnect any fluid lines carefully to avoid damage.
3. Install the New Graco 243183 Pump
   • Place the new pump in position and secure it with the necessary fasteners.
   • Ensure that all fluid lines are reattached correctly to prevent leaks.
4. Test the Sprayer
   • Once the pump is installed, perform a test run to ensure that the sprayer is working as expected.
   • Check for any leaks or irregularities in the spray pattern, adjusting the pressure if necessary.

Maintaining the Graco 243183 Pump

Proper maintenance of your Graco 243183 pump and its components is essential to ensure long-lasting performance. Follow these maintenance tips to keep your sprayer in top shape:

1. Clean After Every Use

Always clean your sprayer thoroughly after each use to remove any paint or debris that could clog the pump or fluid lines.

2. Inspect the Pump Regularly

Periodically inspect the pump and its components for signs of wear. Pay particular attention to the piston, seals, and check valve.

3. Lubricate the Parts

Regular lubrication of the pump and its moving parts will reduce friction and extend the life of the components.

4. Replace Worn Parts Promptly

If you notice any worn or damaged parts, such as seals or the piston, replace them promptly to avoid further damage to the pump.

Graco 243183 pump and its associated parts are vital components for maintaining the performance of your Graco 395ST Pro B and 495ST Pro B airless paint sprayers. By opting for genuine Graco replacement parts, you ensure the longevity and reliability of your sprayer, keeping it running efficiently through multiple projects.

Whether you're a professional contractor or a DIY enthusiast, replacing and maintaining the pump and its components with high-quality Graco parts is key to achieving excellent, consistent spray results.

To learn more or purchase the Graco 243183 pump and parts, visit our website today.