Description
When your Ford New Holland’s dual power transmission isn’t shifting right or you’re stuck in one power range, a failed O-ring in the housing might be the culprit. This rubber seal keeps the hydraulic pressure where it belongs, and when it fails, you lose the pressure needed for smooth shifts between direct drive and underdrive. Before you know it, you’re losing efficiency in the field when you need that perfect balance between power and speed.
Key Features
- Precise 2.844-inch inner diameter with 0.139-inch thickness for exact factory fit
- Made from durable rubber compound that handles hydraulic pressure and temperature swings
- Prevents internal pressure loss that causes sluggish or incomplete dual power shifts
- Direct replacement for the original seal – no modifications needed
- Keeps contaminants out while maintaining proper hydraulic pressure inside the housing
Built for Real Farm Work
This O-ring fits Ford New Holland 40 Series tractors like your 5640, 6640, 7740, 7840, 8240, and 8340, plus the TS Series models including TS80, TS90, TS100, TS110, and TS115. These are hardworking tractors that handle everything from heavy field work to loader operations, where that dual power system really shines for matching your speed and torque to the job at hand.
Made to Last
Farm hydraulic systems operate under serious pressure – often 240-260 PSI in dual power applications. This O-ring is built to handle those demands without hardening, cracking, or losing its seal over time. The rubber compound resists the heat, pressure cycles, and hydraulic fluid exposure that comes with daily farm use.
Installation Notes
This seal goes in the dual power housing where hydraulic pressure builds to engage the system. Clean the sealing surfaces thoroughly before installation and lightly lubricate the new O-ring with clean hydraulic fluid. If you’re doing dual power work, it’s smart to change the hydraulic filter at the same time to prevent contamination from damaging your fresh seal.
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