I'm posting here a problem I have that I wrote about on the CJ3B Forum before Tapatalk locked most of us out. Here's a link to the thread:
https://www.tapatalk.com/groups/cj3b_bulletin_board/backing-up-or-not-t6329.htmlFor those of you that read it over on the 3B Forum, I now have an update. Those just here on the 3A Forum, I'll summarize before the update.
I thought this problem was my rear axle. I tore into it to add shims and have the ring/pinion checked. After the first shop tore everything out, and told me I needed a new one, I found another guy who rebuilds axles for a living. During the teardown, I found some undiscovered damage so the axle needed rebuilding anyways. It's a Dana 41 that a PO had swapped in long before I got it and as long as it works, I'll leave it.
After reinstalling it, I did another test drive. The jeep still locked up in reverse when the engine was disengaged. So I was wrong about the axle causing problems. Now I move to the gear boxes.
Update: With the jeep on stands, I remove the shift tower and observe. I slowly let the clutch out to see the gears spinning and note what happens when I push the clutch peddle back in to disengage the engine. Note: Each shift is done with the tower and then removed to observe the transmission gears.
First gear 2WD - smooth stop on rotation (I didn't check 2nd or 3rd due to higher rpms and my issue is with reverse).
First gear 4WD/ hi and low - smooth stop on rotation
Reverse 2WD - sudden stop with a definite "clunk" and what may appear as a back lash as the gears bounce back from interference.
Reverse 4WD hi range - same sudden stop/clunk with the gear bounce.
Reverse 4WD low range - appeared to be steady stop without the clunk or bounce.
I also checked this with the Transfer case in Neutral. With the transmission in 1st gear and then in Reverse. In either case no clunk or bounce of the gears. Just a smooth rapid deceleration to stop.
After wiping the gear oil off my foot and floor pan, I repeated the above with the tower in place. This allowed me to let the clutch peddle all the way out while double checking what I did above where I was just "feathering" the peddle in an attempt to control the spinning gears ( and oil sling). In each test, I got the same results.
It appears I have interference in the transfer case in hi range but only when I'm in reverse. I feel like there's a remove and inspect coming but are there any thoughts as to what may be happening?