« Reply #91 on: November 12, 2012, 04:25:13 PM »
Yes, that is true. The Grand Cherokee's do not have the same transfer case. They use the NP249 until it was made obsolete by the NP247. The 249 viscous coupler is a welded assembly about 4 inches tall and 6 inches in diameter that directly connects the front input shaft to the rear output shaft. Without it present or with it burned out the car won't move.
The 229, 119, and 129 transfer cases all share a different design. The viscous coupler forms a donut around an open differential. They suck because they rely on a single O-ring to retain their fluid and they do not last as long as the 249 viscous coupler. They are awesome in the sense that once your viscous coupler fails the open differential still connects the rear output in exactly the same fashion most all wheel drive transfer cases operate.
« Last Edit: November 12, 2012, 04:27:11 PM by captspillane »
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Topic: Where can I buy new viscous coupling for transfer case? (Read 56259 times)