Titan 705-120A Piston Rod Complete Assembly
OEM Titan Fluid Section Component
Titan 705-120A Piston Rod Complete Assembly is a genuine OEM pre-assembled piston rod unit for the Titan Advantage 600 and PowrLiner 2850 sprayers, including the rod, retainer, seat, ball, gasket, and cage for a complete replacement.
Compatibility Overview
Replace if the rod is scored, pitted, or bent, causing pressure loss, fluid leaks, or unusual pump noise.
Titan Fluid Section Component Replacement
Titan 705-120A Piston Rod Complete Assembly for Advantage 600 and PowrLiner 2850
Titan 705-120A is a genuine OEM complete piston rod assembly engineered for the fluid section of compatible Titan airless sprayers. This pre-assembled unit includes the precision-ground piston rod along with the retainer, seat, ball, gasket, and cage, providing a comprehensive solution for restoring pump performance. Official Titan parts diagrams for the PowrLiner 2850 identify it as the "Piston assembly" that includes items 9 through 15 [citation:1]. Cross-reference data confirms compatibility with the Advantage 600, PowrLiner 2850, and 740i/740ix platforms, and notes it replaces the older 800-451 part number [citation:8][citation:14]. The piston rod transmits reciprocating motion from the drive system to the piston, and its surface must remain smooth to seal properly against the packings. A scored, pitted, or bent rod will destroy new packings and prevent the pump from building pressure. Replacing the complete assembly ensures all mating components are correctly matched and installed, reducing the risk of assembly errors and extending service life.
| Detail | Technical / Commercial Information |
|---|---|
| Product Overview | Genuine Titan OEM complete piston rod assembly for the Advantage 600, PowrLiner 2850, and 740i/740ix sprayers. Pre-assembled unit for direct replacement [citation:2][citation:8]. |
| Kit Components | Includes piston rod, retainer, seat, ball, gasket, and cage [citation:8]. |
| Function | Transmits reciprocating motion from the drive system to the piston. Provides a smooth sealing surface for the packings. Drives the piston to pressurize fluid. |
| Compatible Titan Models | Titan Advantage 600; PowrLiner 2850 GB_D_F; 740i; 740ix [citation:2][citation:8]. |
| Replaces Legacy Part | 800-451 [citation:8][citation:14]. |
| OEM Part Number | 705-120A Piston Rod Complete Assembly. |
| Replacement Indicators | Visible scoring, pitting, or scratches on the rod surface; fluid leaking past the seals; loss of spray pressure; bent or deformed rod; unusual noises from the pump area. |
| Related Parts Commonly Serviced Together | Piston packings/seals, connecting rod, pump cylinder/housing. |
| Common Problems Solved | Restores proper pump pressure, eliminates fluid bypass and leaks, prevents premature packing failure, and ensures consistent spray performance. |
| Why Genuine OEM | Exact dimensions, surface finish, and material specifications 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 705-120A assembly, 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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