

The 424-244 clamping bolt is a replacement fastener used to secure the pump connecting rod to the piston on compatible PowrLiner striping machines. This bolt is designed to withstand the repeated stresses of pumping operations, providing a secure mechanical connection between moving components. When the original clamping bolt becomes worn, stripped, or loosens during operation, replacement restores proper pump function and prevents unexpected downtime. This direct replacement part installs without modification and is manufactured to original equipment specifications.
| Part Number | 424-244 |
|---|---|
| Part Description | Clamping Bolt |
| Brand | PowrLiner |
| Fits | PowrLiner 6000; PowrLiner 5000; PowrLiner 4000 |
| Condition | New |
The 424-244 clamping bolt is a critical fastening component that secures the pump connecting rod to the piston assembly on PowrLiner 6000, PowrLiner 5000, and PowrLiner 4000 airless striping machines. This connection is fundamental to the pump's reciprocating action, which drives material through the system and onto the pavement. The clamping bolt experiences significant mechanical stress during normal operation, as it must maintain a rigid connection between moving components that cycle continuously during application. When this connection becomes compromised, the pump's ability to generate consistent pressure is directly affected, often resulting in reduced output, erratic operation, or complete loss of pumping function.
Common failure modes for the clamping bolt include thread deformation from overtightening, fatigue cracks from prolonged service, or loosening caused by vibration during operation. In some instances, the bolt may become seized within the connecting rod assembly, complicating disassembly for routine pump maintenance. Replacement with a new 424-244 clamping bolt restores the factory-specified clamping force and ensures proper alignment between the connecting rod and piston. The bolt is manufactured to original equipment specifications, matching the grade, thread pitch, and overall dimensions required for correct installation.
When replacing the clamping bolt, it is recommended to inspect the connecting rod threads and piston interface for signs of wear or damage. Any galling, cross-threading, or deformation in these mating components can prevent the new bolt from achieving proper torque specifications. The clamping bolt should be installed with appropriate torque values as specified in the machine's service manual, typically requiring a clean, dry thread interface to achieve accurate tension. Routine inspection of this connection during scheduled pump maintenance helps identify early signs of wear before unexpected field failures occur.
| Connects pump components | Secures the connecting rod to the piston, enabling reciprocating pump action |
|---|---|
| Maintains alignment | Ensures proper mechanical alignment between moving pump parts during operation |
| Transfers mechanical force | Transmits driving force from the motor to the fluid section for material displacement |
| Stripped or damaged threads | Bolt will not achieve proper torque or repeatedly loosens during operation |
|---|---|
| Visible corrosion or wear | Surface rust, pitting, or deformation that compromises structural integrity |
| Pump pressure inconsistency | Fluctuating output traced to loose or failed connection at the clamping bolt |
| Disassembly for service | Bolt removed during pump overhaul should be replaced with new hardware |
The 424-244 clamping bolt is compatible with the following PowrLiner airless striping machines. Always verify fitment using the correct parts diagram for your specific model and revision.
| PowrLiner Model | Component |
|---|---|
| PowrLiner 6000 | Clamping bolt |
| PowrLiner 5000 | Clamping bolt |
| PowrLiner 4000 | Clamping bolt |
Pump drive component failures often involve multiple parts. When replacing the clamping bolt, these components are typically inspected at the same time.
Worn threads or bushing surfaces in the connecting rod can prevent proper clamping bolt retention.
Damage to the piston interface where the clamping bolt seats may require replacement.
Clamping bolt replacement is often performed during full pump seal and packing service.