Part 805-456A is a piston rod used in the pump assembly of compatible Impact airless paint sprayers. The piston rod transfers drive motion to the pump piston, enabling consistent pressure generation and smooth material displacement during spraying.
| Part Number | 805-456A |
|---|---|
| Part Description | Piston Rod |
| Function | Pump drive motion / pressure generation |
| Fits | Impact series (1140, 1040, 1140 I and II) |
| Condition | New |
The 805-456A Piston Rod is a core mechanical component within the pump drive system of compatible Impact airless paint sprayers. It converts motor and crankshaft motion into linear movement, driving the pump piston to generate spraying pressure.
A worn or damaged piston rod can cause loss of pressure, uneven output, excessive packing wear, or abnormal noise during operation. Replacing the piston rod helps restore proper pump alignment, smooth operation, and consistent pressure delivery.
| Motion transfer | Transfers drive motion to the pump piston |
|---|---|
| Pressure generation | Enables consistent pressure buildup in the fluid section |
| Seal alignment | Maintains proper alignment of packings and piston components |
| Loss of pressure | Sprayer struggles to maintain working pressure |
|---|---|
| Accelerated packing wear | Repeated packing failures or leaks |
| Physical damage | Scoring, bending, corrosion, or surface defects |
| Pump rebuild | During major pump service or overhaul |
Part 805-456A is compatible with the following Impact airless paint sprayers. Always verify exact configuration using the correct parts diagram before installation.
| Sprayer Model | Component |
|---|---|
| Impact 1140 (Service) | Piston rod |
| Impact 1040 | Piston rod |
| Impact 1140I | Piston rod |
| Impact 1140IA | Piston rod |
Piston rod service is often performed alongside other pump wear components.
Worn packings can accelerate piston rod surface wear.
Scored sleeves can damage the piston rod and seals.
Valve wear can increase load on the piston rod.
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