Used Front Axel Assembly
What the front axel assembly does. The front axel assembly in your car sits between the springs and the wheels, carrying the weight of the front end, and enabling the front wheels to turn. It is part of the steering system that turns the circular motion of the steering wheel into the right and left motion of the front wheels themselves. Because of the weight and stress put on them axle beams are made from alloy forged steel.
The front axle’s center section is dropped, for two reasons: to give the engine, which is right above it, more room, and to lower the car’s center of gravity, making it safer and more stable on the highway. Generally, a used front axel assembly will include the axle beam or shaft, stub shafts or axles with brake assemblies, universal joints (also called CV joints) and the stub-axle arm. The inner stub shaft is connected to the inner universal joint; the outer stub shaft is connected to the outer universal joint, and the interconnecting shaft is the center shaft that fits between the two universal joints.
Types of Front Axels
There are two types of front axels: live and dead (also called a lazy axle). An axle containing the differential that allows it to transmit power to the front wheels, as in a front-wheel drive or four-wheel drive vehicle, is called a live axel. The differential also allows the left and right drive wheels to be driven at different speeds as the automobile turns, improving traction and extending tire life. Live axles contain constant velocity joints in the axle half shafts that are used to steer the car. Without affecting the power flow through the half shafts, these joints help in turning the stub axles around the king-pin.
Most axles, however, are dead axles, and do not transmit power. In dead axles, the front wheel hubs rotate on antifriction bearings on the steering spindles, an integral part of the steering knuckles. To enable the wheels to turn, the end of the axle is hinged to the steering spindle and steering knuckle assemblies. The pin that forms the pivot of this hinge for this assembly is known as the king pin or steering knuckle pin.
Cars with dead front axles usually have one of two types: Elliot or Elliot reverse. Elliot front axles have the king spindle yoke on the ends of the I-beam. The ends of the axle are forked, to hold the streering knuckle extension. In Elliot reverse axles the hinged spindle yoke is on the spindle itself instead of on the axle.
Configuration of other parts in the used front axel assembly depend on whether the axel is live or dead. For example, there are two different types of stub axles, depending on whether they’re connected to a driving or non-driving hub.
The Benefit of Used Parts
Keep a car long enough, put enough miles on it, and parts will wear out. When they do, you usually have a decision to make, whether you’re going to replace the part and do the repairs yourself or are taking it to a repair center that gives you the choice of using new or used parts. The decision is whether or not to use a used part instead of a new one. The immediate benefit is obvious: used parts cost a whole lot less then new ones. But are they just as good? Absolutely – if you buy properly remanufactured or refurbished parts from a reputable source, either in-store or online. That can save you a considerable amount of money if, for example, you’re replacing a front axle assembly. Deciding whether to go new or for a used front axel assembly is an important choice, due to all the front axle does, and all the stress it takes.