NP 229?

turnc18

New Member
Joined
Apr 9, 2017
Location
arcadia MO
My uncle has a wagoneer with the np229 t-case in it and the 4wd isn't working in hi-range. Low range seems to work but it feels like the trans is slipping in hi. I have done some research and found out there is a "viscous coupler" inside the case that acts as a torque converter while in 4wd so if youre on hardpack it wont hunch. Past that I dont know much about these cases I only learned of their existance today and I'm lost
 
From what I have found if the t-case is in 4wd and the vacuum actuator on the front axle isn't working you'll cool the viscous coupler and his front axle disconnect was not working when he bought the jeep so to me the signs point to the v/c but he doesn't want to pull the t-case if it's not the v/c. Help?


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