Orbital Steering Unit for John Deere 1640-3140 Series Tractors

Description

When your tractor’s steering starts acting up—wandering down the field, fighting you on turns, or suddenly getting stiff—it’s usually that orbital unit telling you it’s worn out. This steering unit is the heart of your power steering system, and when it goes bad, every job becomes twice as hard and potentially dangerous. Don’t wrestle with unpredictable steering when this replacement can get you back to smooth, responsive control.

What You’re Getting

• 160cc displacement that matches your tractor’s original steering ratio perfectly
• OSP (Open Center Priority) design that works with your existing hydraulic system
• 3/4 inch hydraulic ports for proper flow and pressure
• Precision-built internals that eliminate dead spots and steering wander
• Direct replacement that bolts right in without modifications

Built for Real Farm Work

This orbital unit fits right into the 40 series tractors that handle everything from loader work to precision row crop operations. Whether you’re running tight patterns with a cultivator, backing up to implements, or navigating around buildings and trees, proper steering response keeps you safe and productive. These mid-size tractors see hard use, and reliable steering is critical for both safety and work quality.

Made to Last

The orbital unit combines a hydraulic motor with precision valving, all built to handle the constant vibration and pressure changes of farm work. Quality seals and hardened components resist wear from contaminated hydraulic fluid and temperature extremes. When installed properly with clean fluid, this unit will give you years of smooth steering operation.

Installation Notes

Clean everything thoroughly before installation—dirt is the enemy of precision hydraulics. Mark your hydraulic lines before removal so they go back in the right spots, and use proper torque on those 3/4 inch fittings to prevent leaks. Center your steering wheel during installation, then bleed all the air out of the system by cycling lock-to-lock several times with the engine running.