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  • Publicado : 24 de enero de 2011
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The differential is a device that splits the engine torque two ways, allowing each output to spin at a different speed, also is a device that sends power from a driveshaft toboth sides of an axle.
The rotational torque from a driveshaft is generally laid out horizontally down the length of the vehicle (typical RWD). But the wheels need to be turned at a 90-degree anglefrom the position of the driveshaft. The axle driving the wheels is split into two parts and the inner ends of both sides are connected to the differential. The differential is made up of a seriesof gears that can direct the rotational power from the driveshaft to 90-degree angles and turn both sides of the axle.
A differential can also be used between the front and rear axles on afour-wheel-drive or all-wheel-system by splitting power between both axles and ultimately driving all four wheels.


These differentials (Figs. 1 and 2) are semi-floating hypoid geartype in which the centerline of the drive pinion is mounted below the centerline of the ring gear. The drive pinion and the differential case with drive gear are mounted directly into the center sectionof the rear axle housing assembly. Access to the differential, drive gears and bearings is accomplished through the removal of a stamped steel cover which is bolted onto the rear of the axle housing.All components can be inspected, removed and serviced without removing the complete axle assembly from the vehicle. Ring gear diameter can be identified by observing the housing tube diameter.

Both rear axle housings are iron castings with tubular steel legs pressed into and welded to the carrier to form a complete carrier and tube assembly.
In each axle the drive pinion issupported by two preloaded tapered roller bearings. The front and rear pinion bearing cups are a press-fit against a shoulder that is recessed in carrier casting. The drive pinion depth of mesh adjustment...
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