Part number 0552951 is a repacking kit. This service kit contains the seals, packings, O-rings, and potentially gaskets required to rebuild the fluid section (piston or plunger pump) of compatible airless sprayers. It is compatible with Advantage 400 and Advantage 500 models. The kit restores the pressure seal around the pump's moving components, which is essential for maintaining proper hydraulic pressure and preventing fluid leaks.
| Part Number | 0552951 |
|---|---|
| Part Description | Repacking Kit |
| Fits | Advantage 400; Advantage 500 |
| Condition | New |
Part number 0552951 is a repacking kit. This comprehensive service kit includes all the necessary elastomeric seals, packings, O-rings, and sometimes wear components needed to perform a complete rebuild of the pump's fluid cylinder on compatible Advantage series sprayers. The pump packings are the primary seals that contain high pressure around the reciprocating piston or plunger.
This repacking kit is compatible with Advantage 400 and Advantage 500 sprayer models. Worn or damaged packings are the most common cause of pressure loss, hydraulic fluid contamination, and external fluid leaks in an airless pump. Rebuilding the pump with this kit restores full pressure capability, prevents oil contamination, and eliminates leaks.
| Pressure Seal Restoration | Replaces worn packings to restore the high-pressure seal in the pump cylinder. |
|---|---|
| Leak Prevention | Stops external hydraulic fluid leaks and prevents spray material from contaminating the oil reservoir. |
| Pump Efficiency | Ensures all pump effort is converted into fluid pressure, not lost past worn seals. |
| Preventive Maintenance | Rebuilds the pump before catastrophic failure, extending the overall life of the sprayer. |
| Loss of Pressure | Sprayer cannot reach or maintain its normal operating pressure. |
|---|---|
| Hydraulic Fluid Leak | Visible oil leaking from the pump packings area or fluid in the oil reservoir. |
| Contaminated Oil | Hydraulic oil is milky or contains paint, indicating seal failure. |
| Scheduled Maintenance | After a certain number of operating hours or gallons of material sprayed, as per the manual. |
The repacking kit part 0552951 is designed for the following Advantage series sprayer models.
| Compatible Sprayer Models | Component |
|---|---|
| Advantage 400 | Repacking Kit |
| Advantage 500 | Repacking Kit |
A complete pump service often involves inspecting or replacing these additional components.
The hard chrome rod that moves through the packings; inspect for scoring or wear.
Oil should always be changed when performing a repack to remove contaminants.
The ball valves, seats, and their seals in the pump manifold may also need service.
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