Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Locking Hubs: Description
The hub locks on Bronco and F150/350 4WD vehicles either automatically or manually actuate front driving axle. When actuated, hub lock body assembly locks hub and wheel and tire assembly to front driving axle shaft.
When released, front driving axle shaft is disengaged from hub body assembly and hub and tire and wheel assembly rotate freely on spindle. Two tapered opposed roller bearings allow hub and wheel and tire assembly to rotate on spindle. A hub seal is installed behind inner bearing to prevent wheel bearing lubricant from contaminating brake caliper and rotor surfaces.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.