OK I’ve read the TSM about changing the transfer case fluid. Says I have to take out the filling and drain plugs from the transfer case and reduction unit and then loosen the reduction unit attaching bolts until you can pull the housing back to let it drain.
I’ve been having some stick-slip occurring on turns and I think the first step is to change the fluid. I plan on doing a torque bias test while I’m under there as it seems simple enough. 1979 Cherokee with 70,000 miles. It’s possible it still has the original fluid, I didn’t see any wrench marks on any of the drain plugs. The Area is clean and dry except for grease from the U joints.
Two questions. I’ve never done anything like this under a Truck before or on a bench. But it seems fairly straightforward. Is it difficult to pull the reduction unit away from the transfer case?
Second question
Is there a way to use a vacuum to remove the fluid through the drain plugs so that I don’t have to separate the unit from the transfer case. Or can I at least get 90% of the fluid up to see if it improves the condition?