I checked the linkage and it seems to be ok, because I can engage low range but the front just is not kicking in. I got underneath of it and the front shaft is not locking in. I check for vacuum disco on the front axle and could not find one. My ZJ has been modified it has a newer Dana 30 front and a Ford 8.8 rear end. I know it worked as the previous owner "played" off-road with it. Please help I would like to be able to drive it in the snow.
are the tires all the same size with same tire pressure? believe it or not, a low tire will cause alot of problems shifting in and out, and not uncommon when it comes out to hear a big bang! these t-cases are very resilient. good luck. (oh, when you shift into 4x4, it takes they say like 50 ft to engage). maybe drive around and see what happens. good luck.
All four tires are the same size and pressure. So I do have to be moving for it to engage then? I have tried it sitting still and nothing happens I have tried very short distances but never up to 50 ft. to try and engage it.
its been awhile since ive had a tcase apart, but there is a spring that puts tension on the shift gear that when the teeth line up, the gear will slip in for 4x4 operation and dissengagement. this is why it takes 50ft +/-
I usually hang out on the XJ forum. I have two XJs with the 242 transfers.
your transfer shift lever should have 2 four Highs, one should be part time and the other should be full time. The part time will only work when enough slipage is in the rear wheels, how much I dont know. Full time 4 high should engage.
To test if the 4 high is engaging first select the position you want find a parking lot or field turn the vehicle full lock on the steering. The steering should jerk when the steering is full lock. Sometimes the transfer may take a little time to sense the front wheels. I have found that the test should be in parking lot.
If you find that the 4 highs are working and the lever is in 2 high but the steering jerks like it is engaged, dont panic.
Its called transfer wide up. The transfer is disengaged nut it actually is not.
To fix this problem just back up straight about 30 feet and the problem should be solved. The 231 transfer will do this also but is less detectable.
Also you will see the indicator lights on which are vacuum activated.