

245-051 Minor Pump Service Kit, leather is a maintenance kit containing leather packing components used to restore sealing performance in the fluid pump section. This kit provides the essential wear items needed to address pressure loss and fluid bypass on compatible airless sprayer units.
| Part Number | 245-051 |
|---|---|
| Part Description | Minor Pump Service Kit, leather |
| Brand | Airless |
| Fits | Hydra M; Hydra Pro 2000/4000; Hydr M; Hydra Pro Super; Commander; Admiral; 0528925N/2000/4000 |
| Condition | New |
The 245-051 Minor Pump Service Kit is a maintenance kit containing leather packing components designed to restore sealing performance in the fluid pump section of compatible airless sprayers. This kit provides the essential wear items needed to address pressure loss, fluid bypass, and inconsistent output that occur as leather packings naturally wear over time. Leather packings are used in fluid pump applications for their durability and ability to maintain a seal under high pressure while accommodating the reciprocating motion of the piston or rod. When these packings become worn, hardened, or contaminated, the pump loses its ability to build and maintain consistent pressure, resulting in poor spray performance, surging, or complete loss of output. Rebuilding the pump with this service kit restores the sealing integrity necessary for reliable operation.
This service kit includes the leather packing components and associated seals required for a minor pump rebuild on the specified models. The kit is manufactured to original equipment specifications, ensuring proper fit and compatibility with the pump cylinder and piston assembly. A properly serviced pump maintains steady pressure throughout the spray pattern, eliminates pulsation, and prevents material from bypassing the packing stack. Common indicators that a minor pump service is needed include pressure fluctuation during operation, material leaking from the pump section, difficulty achieving spray pressure, or visible material seepage past the packing retainer. Performing this minor pump service restores pump efficiency and extends the service life of the fluid section.
| Sealing restoration | Replaces worn leather packings to prevent fluid bypass in pump cylinder |
|---|---|
| Pressure stability | Restores ability to maintain consistent operating pressure during spraying |
| Pump efficiency | Eliminates pressure surging and pulsation caused by worn packing seals |
| Pressure fluctuation | Pressure surges or drops during operation with steady trigger pull |
|---|---|
| Fluid leakage | Material seeps from pump packing nut or fluid section during operation |
| Loss of output | Sprayer fails to reach or maintain normal operating pressure |
| Scheduled maintenance | Preventative rebuild after extended use or when performance declines |
Part 245-051 is compatible with the following airless sprayer models. Always confirm fitment using the correct parts diagram for your exact model and revision.
| Airless Model | Component |
|---|---|
| Hydra M | Minor pump service kit, leather |
| Hydra Pro 2000/4000 | Minor pump service kit, leather |
| Hydr M | Minor pump service kit, leather |
| Hydra Pro Super | Minor pump service kit, leather |
| Commander | Minor pump service kit, leather |
| Admiral | Minor pump service kit, leather |
| 0528925N/2000/4000 | Minor pump service kit, leather |
Pump performance issues often involve multiple components. When performing a minor pump service, these parts are commonly inspected or replaced at the same time.
Scoring, pitting, or wear on the rod surface prevents new packings from sealing properly.
Internal bore damage or corrosion affects packing seating and sealing performance.
Damaged threads or deformed components affect proper packing compression.