Ford Explorer Sport Trac Pilot Bearing keeps the manual transmission input shaft perfectly centered in the crankshaft. This enables smooth clutch engagement and power flow. In every Explorer Sport Trac with a manual gearbox, it sits in the crankshaft or flywheel and takes up axial and radial loads, cutting down on friction that would otherwise generate heat, noise, and stiff shifts. Early Ford models applied a sintered bronze pilot bushing lubricated by an oil film. The later Explorer Sport Trac editions adopted a sealed ball Pilot Bearing. The rolling elements in the Pilot Bearing ride on hardened races. This enables the bearings to be capable of higher speeds. Although both are designed to support the input shaft, they differ in construction, the bushing being just a plain sleeve while the ball Pilot Bearing uses balls to spread the load and reduce wear. The Pilot Bearing is compatible with other roller and needle bearings in the transmission. Together they complete a low-friction support system allowing the Ford drivetrain to pass torque with minimal loss. When the Pilot Bearing on an Explorer Sport Trac starts to wear, it can growl, vibrate, and resist gear changes, so getting it fixed by Ford quickly will protect the gearbox.
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