

107-051 Fluid Section Service Kit contains the essential wear components needed to rebuild the fluid section on compatible PowrTwin and PowrLiner sprayers. This kit includes seals, packings, and o-rings required to restore proper fluid pressure, consistent material flow, and leak-free operation. Regular service of the fluid section helps maintain sprayer performance and extend equipment life. This kit provides the necessary components for a complete fluid section overhaul on compatible units.
| Part Number | 107-051 |
|---|---|
| Part Description | Fluid Section Service Kit |
| Brand | PowrTwin / PowrLiner |
| Condition | New |
The 107-051 Fluid Section Service Kit is a comprehensive rebuild kit containing all the critical wear components necessary to service the fluid section on a wide range of PowrTwin and PowrLiner airless sprayers. This kit includes replacement packings, seals, o-rings, and related components designed to restore proper fluid pressure, consistent material delivery, and leak-free operation. The fluid section is the heart of the sprayer, responsible for drawing material from the container and pressurizing it for application through the spray tip. Over time, the packings and seals within the fluid section naturally wear from friction, exposure to abrasive coatings, and repeated pressurization cycles.
When fluid section components wear, common symptoms include loss of pressure, surging or inconsistent spray patterns, material leaking from the packing nut or around the piston rod, and reduced overall performance. In severe cases, a worn fluid section may fail to prime or maintain adequate pressure for proper atomization. Performing regular service with this kit helps restore the sprayer to like-new performance, reduces downtime, and extends the operational life of the equipment. The 107-051 kit is engineered to original equipment specifications, ensuring proper fit and reliable sealing performance across the extensive list of compatible models. Using a complete service kit rather than individual components ensures that all wear items are replaced simultaneously, providing consistent results and reducing the likelihood of repeat failures.
| Pressure restoration | Replaces worn packings to restore proper fluid pressure and flow |
|---|---|
| Leak elimination | New seals and o-rings prevent material leakage from the fluid section |
| Performance consistency | Complete rebuild ensures even material delivery and stable spray pattern |
| Pressure loss | Sprayer cannot maintain consistent pressure or surges during operation |
|---|---|
| Visible leakage | Fluid seeps from packing nut or around piston rod during operation |
| Priming difficulty | Sprayer struggles to prime or loses prime frequently |
| Preventive maintenance | Regular service interval based on hours of use or material type |
The 107-051 Fluid Section Service Kit is compatible with the following PowrTwin and PowrLiner models. Always confirm fitment using the correct parts diagram for your exact model and revision.
| Model | Component |
|---|---|
| PowrTwin 4900GH | Fluid Section Service Kit |
| PowrTwin 4900 XLT | Fluid Section Service Kit |
| PowrTwin 4900, 6900, 8900, 12000 Plus | Fluid Section Service Kit |
| PowrTwin 4500 | Fluid Section Service Kit |
| PowrTwin 3500 50th Anniversary | Fluid Section Service Kit |
| PowrLiner 6950_1 | Fluid Section Service Kit |
| PowrLiner 6950 | Fluid Section Service Kit |
| PowrLiner 6900 XLT | Fluid Section Service Kit |
| PowrLiner 5000 | Fluid Section Service Kit |
| PowrLiner 4950 | Fluid Section Service Kit |
| PowrLiner 4900 | Fluid Section Service Kit |
| PowrLiner 4900 XLT | Fluid Section Service Kit |
| PowrLiner 4000 | Fluid Section Service Kit |
| PowrLiner 4955, 6955, 8955 | Fluid Section Service Kit |
When servicing the fluid section, these additional components are frequently inspected or replaced to ensure complete restoration of sprayer performance.
A scored or worn piston rod can damage new packings and should be inspected during service.
The cylinder bore should be inspected for scoring or wear that may affect seal performance.
Worn valve balls or seats can cause priming issues and pressure loss after fluid section service.