Ok, opened up our T176. Just disassebled and cleaned the three shift rails, springs, plates, etc. Just saw in the diagram above where the #15 pin goes when I reassemble.
Bad news is the rails all look fine, little wear, smooth, no burrs, etc. The little bit of cleaning with scotchbright pad and purple power has them back nearly new.
Now I'll some advice in the tranny itself.
1. All gears apear ok except #4. There are three equally spaced score marks on the top of each gear.
2. When I grab R,#1, & #2 gears there seems to be some play.
3. When I grab #3 & #4 gears there is no play.
4. Jeep is in gear because when I rocked it, trying to free up 3/4 the gears moved some.
I really do not know what I should try next.
Any help is appreciated.
1986 Jeep CJ7, Spartan/ATK 258, Weber 32/36, Nuttered, TeamRush, T176, 4-spd, BFG MT KM2 31x10.5, YJ 2" Lift Spring Conversion