Part 759-056 is a spring holder used in the pressure control or unloader valve assembly of compatible ProMark II and PowrLiner equipment. It secures the spring that maintains proper tension for pressure regulation, ensuring consistent spray performance.
| Part Number | 759-056 |
|---|---|
| Part Description | Spring Holder |
| Brand | Titan |
| Fits |
|
| Condition | New |
The 759-056 Spring Holder is a component of the pressure control (unloader) valve assembly. It secures the pressure spring, maintaining the correct preload that determines the valve's switching point. This ensures the pump builds and holds the proper pressure during operation.
A worn, cracked, or missing spring holder can cause the spring to become unseated, leading to erratic pressure, failure to build pressure, or the pump cycling continuously. Replacing a damaged spring holder restores proper valve function and consistent spray performance.
| Secures spring | Keeps the pressure spring centered and properly aligned |
|---|---|
| Maintains preload | Preserves the correct spring tension for accurate pressure regulation |
| Prevents binding | Allows smooth movement of the spring without friction or misalignment |
| Cracked / broken | Visible damage to the holder |
|---|---|
| Erratic pressure | Pressure surging or inconsistent spray pattern |
| Failure to build pressure | Pump runs but never reaches operating pressure |
| Spring unseated | Spring is displaced or moves sideways within the valve |
Part 759-056 is compatible with the following models. Always verify fitment using the correct parts diagram for your specific equipment revision.
| Model | Component |
|---|---|
| ProMark II (Model No 759-2010) | Spring Holder |
| PowrLiner 8900 | Spring Holder |
| PowrLiner 8900XLT | Spring Holder |
| PowrLiner 8900XLT SP | Spring Holder |
| PowrLiner 6950 | Spring Holder |
| PowrLiner 6900XLT | Spring Holder |
| PowrLiner 6900XLT SP | Spring Holder |
| PowrLiner 4950 | Spring Holder |
| PowrLiner 4900 | Spring Holder |
| PowrLiner 4900XLT | Spring Holder |
| PowrLiner 3100 | Spring Holder |
| PowrLiner 2800 | Spring Holder |
| PowrLiner 1800M | Spring Holder |
| PowrLiner 2800M | Spring Holder |
| PowrLiner 800 | Spring Holder |
| PowrLiner 4500 | Spring Holder |
| PowrLiner 2850 | Spring Holder |
| PowrLiner 550 | Spring Holder |
| PowrLiner 5500 | Spring Holder |
| PowrLiner 4955 | Spring Holder |
| PowrLiner 6955 | Spring Holder |
| PowrLiner 8955 | Spring Holder |
| PowrLiner 3500 72v | Spring Holder |
| PowrLiner 3000 | Spring Holder |
| PowrLiner 3500s | Spring Holder |
When replacing the spring holder, inspect these associated components.
The spring itself may lose tension; replace if weakened.
Check for wear or debris that could affect sealing.
Replace any damaged seals to prevent internal leakage.
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