Explorer 2WD V8-4.6L (2008)
Axle Shaft Assembly: Description and Operation
Rear Drive Halfshafts
The rear drive halfshafts consist of the following:
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Inner constant velocity (CV) joints
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Outer CV joints
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Interconnecting shafts
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Convoluted CV joint boots
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CV joint boot clamps
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Special CV high-temperature grease
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Tripod joint housings
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Ball and cage housings
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A circlip stopper that holds the cross-groove inboard race assembly (inboard CV joint) together
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A circlip that retains the splined inboard CV joint to the differential side gear
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The RH and LH halfshafts are different lengths, with the LH halfshaft being the longer of the 2.
The rear drive halfshafts link the rear axle to the rear wheel hubs. The CV joints allow the halfshafts to rotate smoothly through the required changes
in angles between the stationary axle and the varying angles of the rear wheels including jounce and rebound. The CV joints are either tri-lobed style
or the caged ball type depending on inboard or outboard. New halfshaft components are available as kits containing grease, boots and clamps.
Handle all halfshaft components carefully during removal and installation and during various component disassembly and assembly procedures. Never
pick up or hold the halfshaft only by the inboard or outboard CV joint. Do not overangle the CV joints. Damage will occur to an assembled inboard
CV joint if it is overplunged outward from the joint housing. Never use a hammer to remove or install the halfshafts from the hub. Never use the
halfshaft assembly as a lever to position other components. Always support the free end of the halfshaft. Do not allow the boots to contact sharp edges
or hot exhaust components. Handle the halfshaft only by the interconnecting shaft to avoid pull-apart and potential damage to the CV joints. Excessive
pulling force on the interconnecting shaft between joints of the halfshaft will result in internal joint damage. Axial loads used in assisting removal must
be applied through the inboard joint housing only. Do not drop assembled halfshafts. The impact will cut the boots from the inside without evidence of
external damage. Do not remove the outer CV joint by pulling on the interconnecting shaft. Inspect all machined surfaces and splines for damage.