Axle Shaft: Description and Operation

DESCRIPTION

Fig. 1:

Fig. 2:

The front driveshaft assemblies are flexible assemblies consisting of an inner and outer flexible joint connected by a solid shaft (Fig. 1) (Fig. 2). Transaxle packaging and location requires the use of unequal length driveshafts, with the left shaft being longer than the right.
The inner joints are of a tripod design (Fig. 2), and allow for axial and angular movement to accommodate for shifting of powertrain and suspension components. The inner joints incorporate a female spline which install over the transaxle stub shafts.
The outer joints are of a constant velocity design (Fig. 2), and only offer angular flexibility. The outer joints incorporate a male spline, which connect to the wheel hub/bearing. The outer joint is fastened to the hub to ensure that there is no axial movement (endplay).
Both inner and outer joints utilize flexible "boots" (Fig. 1) (Fig. 2) which maintain grease within the joints, protect the joints from the environment/elements, and facilitate the axial and angular movement of the joints. The inner tripod joint boots are constructed of silicone rubber. The outer C/V boots are made of Hytrel plastic.

NOTE: When driveshaft boots are replaced be sure boots of the correct material are used.

OPERATION
Driveshaft assemblies are designed to transmit power from the transaxle to the front wheels, while allowing for powertrain and suspension flex.