eaton 13 speed problem.

Since it started after you worked on the air line, that would be the first thing I'd check....loose or leaking a bit, or accidentally plugged off? Might not hurt to take it off, have a real close look at it, and test out it's air flow, and shifting. (Should be able to hear what's going on with engine, radio, etc. all off and listening while you flip the range and splitter).

 

Is the little line now kinked? Because of the angle the line has to go now with the new fitting. The splitter needs air pressure to go into "split". So if its not getting enough volume and or pressure, it will come out.

 

Had similar issue, change it back to the 90 elbow. Also be sure not to run the fitting in too tight, it will restrict air flow just enough for the splitter to want to take it out of gear. That line is small enough as it is, don't wanna take any air flow away.

 

Any one had a problem with a eaton fuller 13 speed not going into the high side till after it warms up for about 45 minutes . By the high side I mean 5th thru 8 the the range splitter . After warming up works perfectly ? Thank you

 

Where are you located? Is it freezing temps that are the culprit? It could be as simple as the oil is way too heavy. But its more likely the air cylinder is gummed up and sticking until the "crap" gets warm enough to move. Park it in high range overnight and see if it stays in high until it warms up the next day.