The 155-505 Major Pump Service Kit is an OEM comprehensive rebuild kit designed for the pump assembly used on Commander air powered airless sprayers. It includes the critical internal wear components required to restore pressure, sealing, and consistent material delivery during major pump service.
| Part Number | 155-505 |
|---|---|
| Product Type | Major Pump Service Kit |
| Condition | New OEM |
| Includes Components | Upper and lower packings Seals and O-rings Backup rings and wear components Check valve and pump sealing parts |
| Fits | Commander Air Powered Airless Sprayer |
The 155-505 Major Pump Service Kit is a factory-specified rebuild kit for the fluid pump used on Commander air powered airless sprayers. It is intended for full pump servicing when normal repacking is no longer sufficient.
Major pump service kits address internal sealing wear caused by high-pressure operation, abrasive coatings, and extended duty cycles. Installing this kit helps restore pressure stability, reduce downtime, and extend pump life.
| Full sealing rebuild | Replaces all critical pump sealing components |
|---|---|
| Pressure recovery | Restores consistent high-pressure output |
| Leak prevention | Eliminates internal and external pump leaks |
| Severe pressure loss | Pump cannot maintain operating pressure |
|---|---|
| Persistent leaks | Leakage remains after standard repacking |
| Surging or stalling | Irregular pump cycling or output |
| Major overhaul | Performed during full pump rebuild |
Part 155-505 is compatible with the following air powered airless sprayer. Always verify fitment using the correct pump parts diagram.
| Sprayer Model | Component |
|---|---|
| Commander Air Powered Airless Sprayer | Major Pump Service Kit (155-505) |
Inspect for scoring during major pump service.
Replace if worn or damaged beyond sealing tolerance.
Often serviced alongside major pump rebuilds.
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