I would suspect it was not fully engaged on the T/C into 4H....... try it again, but make sure the lever does all the way forward.
It can be a bit iffy on whether or not it went in....... from my experience.......
OR...... if your vacuum shifter on front axle is flaky...... or not actuating with the T/C....
"For Gawd's sake, put a RELAY in there or you could burn the whole damn Jeep to the ground" ...this quote brought to you by people who do not understand the law.....Kirchoff's, Ohm's, or Faraday's.
Violation of KISS shall always ring false in TRUE engineering. - ME___
Had 75CJ5, 89YJ, 93YJ. Have 82CJ7 & 95YJ____Not one burnt yet due to lack of relays.