Description
Every time you shift your Massey Ferguson from forward to reverse during loader work or tight maneuvering around the farmyard, that shuttle transmission relies on precise spring tension to keep everything working smoothly. This shuttle box spring is a critical internal component that ensures proper operation of your 12-speed transmission’s shuttle mechanism, maintaining the quick, reliable direction changes these tractors are known for.
What You’re Getting
- Factory-specification spring tension maintains proper shuttle engagement and release
- Precision-manufactured to exact tolerances for reliable operation under load
- Heat-treated spring steel resists fatigue from constant cycling during farm work
- Direct replacement for worn springs that cause sluggish or delayed shuttle response
- Essential component for maintaining smooth forward/reverse operation
Built for Real Farm Work
The 300 series (365-399) are beloved by farmers for their versatility in handling everything from cultivation and planting to hay production and loader work. Whether you’re running your 390 with a loader around the barn or using your 375 for row crop work, that shuttle transmission gets a real workout switching directions hundreds of times a day. This spring keeps that system operating with the crisp response you need when time matters.
Made to Last
Transmission springs work in a harsh environment with constant temperature changes, hydraulic pressure fluctuations, and the vibration that comes with heavy farm work. This replacement spring is manufactured from high-quality spring steel with proper heat treatment to handle the stress of continuous shuttle operation without losing tension or breaking prematurely.
Installation Notes
This is an internal transmission component that requires splitting the tractor for access to the shuttle box assembly. Installation should be done by someone experienced with transmission work, as proper assembly timing and hydraulic pressure settings are critical for reliable operation. It’s typically replaced during major transmission service or when addressing shuttle-related problems.
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