Titan part 106-016 is a lower packing spring used in the pump manifold of compatible PowrBeast, PowrLiner, and PowrTwin sprayers and pressure washers. This spring maintains constant downward pressure on the packing stack, ensuring a proper seal between the piston/plunger and the cylinder. Replacing a worn, broken, or collapsed lower packing spring restores sealing integrity, prevents bypass or pressure loss, and eliminates leaks.
| Part Number | 106-016 |
|---|---|
| Part Description | Lower Packing Spring |
| Brand | Titan |
| Fits | PowrBeast 4700, 7700, 9700; PowrLiner 4000, 4900 XLT, 4950, 4900, 5000, 6950, 4955, 6955, 8955; PowrTwin 4900, 6900, 8900, 12000 Plus, 3500 50th Anniversary, 3500, 4500, 4900 GH, 4900 XLT |
| Condition | New |
The Titan 106-016 Lower Packing Spring is a critical component within the pump manifold of many PowrBeast, PowrLiner, and PowrTwin sprayers and pressure washers. It sits beneath the packing stack (a set of seal rings) and applies constant upward force, ensuring the packings maintain intimate contact with the reciprocating piston or plunger. This spring is essential for preventing fluid bypass, maintaining rated pressure, and stopping external leaks.
Over time, the lower packing spring can fatigue, take a set, or break due to repeated compression cycles and exposure to chemicals. A weakened spring no longer provides sufficient preload, leading to poor sealing, erratic pressure, or leakage from the weep hole or manifold. Replacing the spring restores the correct loading on the packing stack and returns the pump to original performance.
| Seal preload | Maintains constant upward pressure on the packing stack to ensure a tight seal around the piston |
|---|---|
| Compensates for wear | Allows the packings to remain effective as they naturally wear over time |
| Prevents bypass | Eliminates fluid leakage past the packings, preserving pressure and flow |
| Visible breakage | Spring is cracked, broken, or pieces are missing |
|---|---|
| Set / collapsed | Spring no longer returns to its original height; appears flattened |
| During packing replacement | Always replace the spring when installing new packings for optimal seal life |
| Persistent weeping | If the pump weeps after new packings, the spring may be weak |
Titan part 106-016 is used in the pump assemblies of the following models. Always confirm with your machine's parts diagram.
| Model | Component |
|---|---|
| PowrBeast 4700 | Lower Packing Spring |
| PowrBeast 7700 | Lower Packing Spring |
| PowrBeast 9700 | Lower Packing Spring |
| PowrLiner 4000 | Lower Packing Spring |
| PowrLiner 4900 XLT | Lower Packing Spring |
| PowrLiner 4950 | Lower Packing Spring |
| PowrLiner 4900 | Lower Packing Spring |
| PowrLiner 5000 | Lower Packing Spring |
| PowrLiner 6950 | Lower Packing Spring |
| PowrLiner 4955 | Lower Packing Spring |
| PowrLiner 6955 | Lower Packing Spring |
| PowrLiner 8955 | Lower Packing Spring |
| PowrTwin 4900 | Lower Packing Spring |
| PowrTwin 6900 | Lower Packing Spring |
| PowrTwin 8900 | Lower Packing Spring |
| PowrTwin 12000 Plus | Lower Packing Spring |
| PowrTwin 3500 50th Anniversary | Lower Packing Spring |
| PowrTwin 3500 | Lower Packing Spring |
| PowrTwin 4500 | Lower Packing Spring |
| PowrTwin 4900 GH | Lower Packing Spring |
| PowrTwin 4900 XLT | Lower Packing Spring |
When servicing the lower packing spring, these components are often replaced or inspected at the same time to ensure a complete pump rebuild.
The upper and lower packings (seals) work directly with the spring. Replace as a set for best results.
Inspect the piston surface for scoring or wear; a damaged piston will ruin new packings quickly.
Replace any gaskets or o‑rings disturbed during disassembly to prevent leaks.
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