Description & Operation
The front axle shaft assemblies are flexible assemblies consisting of inner and outer flexible joints connected by a solid shaft. See Fig 1 . Transaxle design and location requires the use of unequal length axle shafts, with the left shaft being longer than the right.
The inner joints are of a tripod design, and allow for axial and angular movement to accommodate for shifting of powertrain and suspension components. See Fig 2 . The inner joints incorporate a female spline which installs over the transaxle stub shaft.
The outer joints are of a Rzeppa design, and only offer angular flexibility. The outer joints incorporate a male spline, which connects to the wheel hub/bearing. The outer joint is fastened to the hub to ensure that there is no axial movement (end-play).
Both inner and outer joints use flexible boots 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 joint boots are constructed of silicone rubber. The outer boots are made of Hytrel plastic. See Fig 2 . Axle shaft assemblies are designed to transmit power from the transaxle to the front wheels, while allowing for powertrain and suspension flex.