Titan 704-289 Piston Bushing

Piston bushing 704-289 for multiple sprayer models

The 704-289 piston bushing is a cylindrical bearing component installed in the pump housing to guide and support the piston rod. It is specifically designed for use with 340 Airless Sprayer International Model; 440 i Airless Sprayer; 440i Airless Sprayer1; 640 i Airless Sprayer; Advantage 400; Advantage 500; Performer 640 i Airless Sprayer; PowrLiner 1800M, 2800M; RentSpray 450; and RentSpray Plus models. The bushing provides a low-friction surface that allows the piston rod to reciprocate smoothly while maintaining proper alignment within the pump cylinder. This reduces wear on both the rod and the housing and helps maintain effective sealing. The bushing is typically made from a durable, oil-impregnated bronze or engineered polymer that can withstand the loads and lack of external lubrication. Over time, piston bushings can wear, causing the piston rod to develop excessive play. This can lead to misalignment, increased seal wear, and loss of pumping efficiency. Symptoms of a worn bushing include knocking or rattling sounds from the pump, fluid leakage, or visible play in the piston rod. Replacing a worn piston bushing with this genuine part restores proper guidance and alignment. This ensures smooth piston operation and prolongs the life of seals and packings. When replacing the bushing, inspect the piston rod for scoring and ensure the bushing bore is clean.