Part 800-450 is a repacking kit used to seal the fluid section and prevent leaks around the pump plungers. It contains the necessary seals, packings, and gaskets to restore the pressure integrity of the pump. This kit is essential for routine maintenance and leak repair on compatible sprayer models.
| Part Number | 800-450 |
|---|---|
| Part Description | Repacking Kit |
| Fits | 740 i; 740 IX; 740 ix Airless Sprayer |
| Condition | New |
The 800-450 repacking kit contains a complete set of seals and packings designed to prevent fluid leaks from the pump assembly. These components create a seal around the reciprocating plungers and between the static parts of the fluid section.
Over time, packings wear down from friction and chemical exposure, leading to dripping, pressure loss, and material waste. Performing a repack with this kit restores a tight seal, maintains pump pressure, and prevents fluid from leaking into the crankcase.
| Leak Prevention | Seals the dynamic area around the plungers to contain high-pressure fluid |
|---|---|
| Pressure Integrity | Maintains system pressure for consistent spray performance |
| Crankcase Protection | Prevents paint or solvent from leaking into the oil reservoir |
| Visible Leaks | Fluid dripping from the packings or the area where the plungers enter the pump |
|---|---|
| Pressure Loss | Inability to reach or maintain normal operating pressure |
| Preventive Maintenance | Routine service after a recommended number of operating hours or usage cycles |
| Oil Contamination | Paint or solvent thinning the crankcase oil, indicating seal failure |
Part 800-450 is compatible with the following 740 series airless sprayer models. It contains the correct size and quantity of seals for the pump assembly in these units.
| Sprayer Model | Component |
|---|---|
| 740 i Airless Sprayer | Repacking Kit |
| 740 IX Airless Sprayer | Repacking Kit |
| 740 ix Airless Sprayer | Repacking Kit |
When performing a repack, it is common to inspect and potentially replace other high-wear components in the fluid section to ensure complete system integrity.
Worn, pitted, or scored plungers can damage new packings quickly and should be replaced if damaged.
Worn inlet and outlet valves can cause pressure issues and are often serviced during pump maintenance.
Oil should be changed if it has been contaminated by fluid leaking past failed packings.
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