Hi, I'm a newbie and hope I am posting this question in the correct section. I have recently replaced the trans and transfer case (with used parts from a roll-over) in my 95 S-10 and find I that I am getting excess fluid in the transfer case so I will be replacing the seals between trans and transfer, but I also wonder if I have hooked up the vacuum lines to the switch on the transfer case correctly. I have been unable to find a diagram of how these lines (3) should be connected. I intend to replace the switch and the lines while I am doing the seals as I believe the engine was sucking trans fluid up and burning it. I think this because I was getting tail-pipe smoke under conditions that did not correspond to usual worn engine oil smoke pattern, ie: I got no smoke when cold, no smoke under heavy accel nor back-off until vehicle speed exceeded 50 mph, and even then not always. Seemed to use no oil, but trans fluid was often low, and pulling fill plug on transfer yielded about 2 quarts xtra fluid, so I think fixing the seals may remedy the smoke, but want to insure the vacuum lines are correct.

 

The vacuum line diagrams can be found in a few different threads, the easiest of which to search through are located in the Tech Article (DIY) section to which there is a link to the index of that section in my signature.