Inside the Original Jeep Quadra-Trac
The low-range sun gear and mainshaft suffer from the same 10-spline blues as the transmission output shaft. In this view, the trans shaft enters the sun gear from the left. It wears out the sun gear, which in turn wears out the mainshaft sticking out to the right. At this point, things can get expensive. At press time, the mainshaft (PN J8122705) goes for $138 at your local Jeep dealer, and the sun gear (PN J81227708) has been discontinued. View Related Article
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