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  • Wet Kit Tips & Tricks in Hydraulic Systems 

    Read for tips, tricks, and troubleshooting to save you time and money, and to prevent injuries. Find installation tips for power take-offs, pumps, tanks, hoses, and more. Additionally, there is a downloadable checklist available for system startup.

What are Eaton Wet Kits?

Eaton’s Bezares 1000/2000 Series wet kits are comprehensive solutions for end dump installations. Specifically designed for Eaton Fuller and Eaton Cummins Endurant HD™ applications, these kits simplify installation and enhance reliability. They include a Power Take-Off (PTO) with durable seals, a reliable dump pump, and an aluminum tank. With a single part number for ordering, Eaton’s wet kits improve productivity in mobile hydraulic systems. Whether through easier ordering, time-saving installation, or seamless component integration, these kits elevate dump truck functionality and efficiency.
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Use these quick links to jump to tips for various components of the wet kit. These installation tips and safety guidelines will optimize your hydraulic system’s performance and minimize the risk of costly errors.

Power Take-Offs (PTOs)

  • Clean Mating Surfaces

Before installing a PTO, ensure that all mating surfaces are clean and free from debris. Even the smallest particle can cause leaks, leading to inefficiencies and potential damage.

  • Choose the Right Sealant

Avoid using RTV or silicone for sealing PTO components. Instead, opt for a high-quality gasket sealer. It provides a reliable seal without compromising the systems integrity.

  • Backlash Verification

During installation, verify the backlash between the input and transmission gears. Use a dial indicator to measure .006" to .012"   worth of backlash. Proper backlash ensures smooth operation and prevents premature wear.

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Pump Installation

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  • Rotation Matters

Correct pump rotation is critical. Verify that the pump rotates in the intended direction to prevent damage. Incorrect rotation can lead to premature failure and costly repairs.

  • Grease the Shaft

Grease the shaft of both the PTO and pump. This prevents rust and spline failure, ensuring a longer lifespan for these components.

  • Bolt Tightness

When securing the pump, avoid over-tightening bolts. Excessive force can damage seals, leading to leaks. Follow manufacturer recommendations for proper torque specifications.

  • Temporary Port Plugs

Never use rags or makeshift materials as temporary port plugs. These can get sucked into the system, causing internal damage. Invest in proper port plugs to maintain system integrity.

Hose Installation

  • Sleeve Placement

When installing hoses, pay attention to the sleeve on the suction port. Proper placement ensures efficient system function and prevents leaks.

  • Pre-Flood the Pump

Before using the system, pre-flood the pump. This process lubricates internal components and prevents premature wear during initial operation.

  •  Minimize 90-degree fittings and reducers

These components increase heat, cavitation, and failure points. Instead, opt for longer hoses or bends to maintain better flow and reduce heat.

  • Orient hoses along their natural lay line

Avoid forcing hoses into positions that cause internal steel braids to flex. The lay line on the hose indicates pressure ratings and hose type. Stressful situations, such as running hoses over frame rails, twist the hose and create a scissor motion, significantly reducing steel braid integrity and potentially leading to dangerous pinholes.

  • Use the proper hose for each connection.

When connecting hoses, it’s crucial to use the right type for each purpose. Suction hoses and pressure hoses have different reinforcement designs. If you use a suction hose in a pressure application, it can explode. Conversely, using a pressure hose in a suction application can lead to cavitation, damaging your equipment. Always choose the appropriate hose to avoid problems.

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Tank Installation

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  • Mounting Position

Mount the hydraulic tank above the pump level. This maintains proper priming and prevents air from entering the system. Adequate priming ensures consistent performance.

  • Reservoir Cap Selection

Choose the correct reservoir cap to prevent contamination and moisture ingress. A well-sealed cap keeps the hydraulic fluid clean and extends system life.

  • Suction and Return Holes

For three-line hydraulic systems, install both suction and return holes at the bottom of the tank. This prevents aeration and foamy oil, ensuring smooth operation.

Safety Considerations

  • Remember that adjusting the relief valve won’t control flow; it’s designed to work within specific pressure limits. Avoid using it as a flow control mechanism.

  • Damaged seals in the pump pose safety risks. Always inspect and replace damaged seals promptly.

  • Pay attention to hose placement. Ensure proper mounting at the bottom of the tank to maintain system functionality. If you mount on the side or above the oil level, the you will suck in air which results in spongy oil.
  • Don’t fill the oil tank to the top, this will result in oil pouring out of the vent cap when you drop the box. Check the oil when the system is cold for proper reading and never check the oil level when the box is up because it will appear low.

  Wet Kits FAQ

 

When tightening a pipe fitting, avoid over-tightening to prevent leaks. If you need to use tape, start a few threads back, wrap it around, and ensure a clean cut when removing it. Be cautious of any protruding threads during tightening. Following these steps should help prevent issues.


Pipe Dope: This is a liquid compound that creates a seal by filling in gaps between threads. It can be advantageous for creating a more consistent seal and is less likely to deteriorate over time.

Thread Sealant Tape: Also known as plumber’s tape, it is used to seal pipe threads. The tape acts as a deformable filler and lubricant, helping to ensure a leak-proof seal. It is easy to apply and can be adjusted or repositioned as needed.

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Scheduled Maintenance (PMs): Many individuals choose to replace filters during scheduled preventive maintenance (PM) sessions. These PMs can be based on either time (e.g., every three months) or usage (e.g., after a certain number of operating hours).

Date-Based Approach: Some people prefer to mark the date of filter replacement directly on the filter housing using a permanent marker. This ensures that they remember when the filter was last changed. If you follow a regular PM schedule, consider replacing filters during these sessions.

Usage-Based Approach: Alternatively, you can replace filters based on usage. For example, change them after a specific number of operating hours or miles driven. The exact interval will depend on factors such as the type of oil used, the environment (e.g., dusty areas), and the specific equipment.

Dusty Environments: In dusty or challenging conditions , it’s advisable to replace filters more frequently. Dust and debris can clog filters faster, affecting their efficiency.

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It will go to the bottom because it is going to be your suction and your return.
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When mounting a filter on the return line, you have flexibility in choosing its location. The hoses can be routed wherever necessary to accommodate the filter placement. Additionally, some individuals prefer to mount the filter on the inside of the frame. This location provides protection and keeps the filter out of the way. However, ensure that you can easily access and unscrew the filter when needed. Keep in mind that some filters are quite large, especially if they have dual elements. Also, choose an area where the filter won’t obstruct other components and where you can comfortably handle it during maintenance. Opt for a spot where you can easily reach the filter for routine checks and replacements. Accessibility is crucial for efficient maintenance. Ensure that the filter is securely mounted. A solid bracket or mounting point is essential to prevent vibrations or movement that could damage the filter. Lastly, remember to assess your specific vehicle setup and preferences when deciding on the filter placement. Prioritize ease of maintenance and protection while keeping practicality in mind.
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When replacing a power take-off (PTO), addressing spline wear is crucial. The splines are the mating teeth on the PTO shaft and the corresponding component (such as a pump). If there’s existing spline wear, it can negatively impact performance and longevity. For PTO maintenance, you can have a PTO rebuilt to refurbish components or purchase individual repair parts instead replacing the entire PTO assembly. Even if you install a brand-new pump, if the PTO splines are worn, it will lead to premature wear and potential damage. Lastly, remember to maintain the PTO system ensures reliable operations and prevents unnecessary wear.
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