The 2015 Ford Explorer represents a significant moment in the evolution of the three-row SUV, marking the transition to a unibody platform that reshaped its dynamics. For owners and enthusiasts, understanding the 2015 Ford Explorer rack and pinion system is essential, as this component is the direct link between the steering wheel and the wheels, dictating handling precision and feedback. This specific model year benefits from the refined steering geometry introduced with its shift away from the traditional body-on-frame design, placing new importance on the rack's construction and durability.
Understanding the Rack and Pinion Mechanism
At its core, the rack and pinion is a simple yet brilliant mechanism that converts the rotational motion of the steering wheel into the linear movement needed to turn the wheels. When the driver turns the steering wheel, the pinion gear rotates, moving the rack gear horizontally. This lateral movement is transferred through tie rods to the wheel knuckles, pivoting the tires. The 2015 Explorer's system is engineered for a balance of low-speed maneuverability and high-speed stability, providing a direct feel that was often missing in its truck-based predecessors.
Key Specifications and Features for 2015
Ford equipped the 2015 Explorer with a robust rack and pinion unit designed to handle the vehicle's substantial weight and power. The system is typically power-assisted, utilizing either an electric power steering (EPS) motor or a hydraulic pump to reduce steering effort. Key specifications include the gear ratio, which determines how many turns of the wheel are needed to lock the wheels left or right, and the overall steering ratio, which influences the responsiveness of the vehicle. These figures are meticulously calculated to align with the Explorer's role as a comfortable family hauler that still feels engaging to drive.
Component Breakdown
Rack Gear: The central shaft with teeth that meshes with the pinion.
Pinion Gear: The smaller gear attached to the steering shaft that drives the rack.
Steering Tie Rods: Connect the ends of the rack to the steering knuckles.
Steering Damper: Often integrated or mounted separately to absorb vibrations and prevent oscillation.
Support Bearings and Bushings: Ensure smooth movement and minimize wear and noise.
Common Issues and Symptoms of Failure
While the 2015 Ford Explorer is a reliable vehicle, the rack and pinion system is not immune to wear and tear. Owners should be vigilant for signs of trouble, which often manifest as physical sensations or audible cues while driving. A common issue is play in the steering wheel, where the wheel feels loose or vague before the actual turning movement begins. This can indicate worn bushings or excessive backlash within the rack gear. Ignoring these symptoms can lead to more severe problems, such as fluid leaks or complete loss of steering assist, making timely inspection critical.
Identifying Problems Early
Excessive play or looseness in the steering wheel.
Unusual noises, such as whining or groaning, particularly when turning.
Fluid leaks visible beneath the front of the vehicle.
Difficulty steering, especially at low speeds or while parking.
The vehicle drifting or pulling to one side.
Maintenance and Replacement Procedures
Proactive maintenance can significantly extend the life of the rack and pinion system. Regularly checking the power steering fluid level for leaks and contamination is a simple task that can prevent catastrophic failure. If the fluid appears milky or burnt, it indicates internal wear or overheating. When replacement becomes necessary, the process involves removing the steering components to access the rack, requiring careful alignment of the wheels to ensure proper geometry is restored. Aftermarket and OEM replacement parts are available, offering varying levels of durability and performance to suit different driving needs.
