Titan 704-551A Piston Rod
OEM Titan Fluid Section Component
Titan 704-551A Piston Rod is a genuine OEM stainless steel piston rod that drives the reciprocating motion within the pump assembly of compatible Titan airless sprayers, restoring smooth operation and consistent pressure.
Compatibility Overview
Replace if the rod is scored, worn, or damaged, causing pressure loss, uneven pump operation, or damage to packings.
Titan Fluid Section Component Replacement
Titan 704-551A Piston Rod for Airless Sprayer Pump Service
Titan 704-551A is a genuine OEM stainless steel piston rod engineered for the fluid section of compatible Titan airless sprayers. This bare rod is the critical component that connects the drive mechanism to the piston, converting motor or hydraulic force into the reciprocating motion needed to move coating material through the system. A smooth, unworn rod surface is essential for proper sealing against the upper and lower packings; a scored or worn rod will quickly destroy new packings and prevent the pump from building pressure. This is the bare rod only—for the complete assembly with ball, cage, and retainer, refer to 704-552A or the complete piston assembly 704-560.
| Detail | Technical / Commercial Information |
|---|---|
| Product Overview | Genuine Titan OEM bare piston rod (stainless steel) for compatible airless sprayers. Listed as item #9 in the Advantage 400 pump assembly diagram. |
| Function | Connects moving components within the pump, converting motor or hydraulic force into reciprocating motion. The rod surface must remain smooth to seal properly against the packings and maintain pressure. |
| Compatible Titan Models | 330, 340, 440, 440IX, 440XC, 540, 550XC, 690GXC; Impact 410, 440, 540, 640; Advantage 400, 500; Epic 440i, 440XC, 447HPX, 550XC, 640i, 660HPX, 660XC, 690GXC, 690HPG; RentSpray 450, 600, 650, 700; PowrLiner 1800M, 2800, 3100, 3100GXC; MultiFinish 440; ProMark II; Performance 450e. |
| OEM Part Number | 704-551A Piston Rod (Bare, Stainless Steel). |
| Important Note | This is the bare piston rod only. For the complete assembly including ball, cage, and retainer, refer to 704-552A or the complete piston assembly 704-560. |
| Replacement Indicators | Scored, worn, or damaged rod surface; loss of pump pressure; fluid leaking from the packing area; uneven pump operation or irregular cycling; visible wear that would destroy new packings. |
| Related Parts Commonly Serviced Together | Upper packing assembly (700-603A), lower packing assembly (700-601A), pump repacking kit (704-113), piston guide, and packing grease. |
| Common Problems Solved | Restores smooth mechanical motion, eliminates pressure loss caused by a worn rod surface, prevents premature packing failure, and ensures reliable pump operation. |
| Why Genuine OEM | Exact dimensions, surface finish, and stainless steel material ensure proper fit and sealing with new packings. A low quality or worn rod will quickly damage new seals and lead to continued pressure loss. |
Before installing the 704-551A Piston Rod, inspect the pump block and packings for wear. Always replace packings when installing a new piston rod to ensure a proper seal. Lubricate the rod and seals with compatible grease before assembly. Follow the fluid section disassembly and reassembly procedure in your sprayer's service manual. Always relieve system pressure and disconnect power before servicing.
Frequently Asked Questions
Quick answers for confirming fitment and identifying when replacement is needed.
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