forks, you looked inside the transfer case>?
my guess is your forks statement is pure guessing.
the cause can only be 3 things.
1: operator error (RTM)
2: bad shifter mechanism. (from hand to dog rings
3: bad transfer case.
op error, not using clutch to disengage.
moving
or not on flat ground and there is down hill force locking the dogs
in the box.
so are you in main box (A/T or m/T ) and you depress the
clutch (if in fact you have one) and it will not shift from 4wd.
is it stuck in high range or low? 4L or 4H
if the linkage is ok and all above
then the internal shifter box, is misaligned,
a: fork rails jammed.
b: forks bad,
d:; forks heat welded to dog rings (gross overheated)
e: bad splines on dog rings.
f: ok, you get the point, bad xfr case.
part 26 and 28 are what the forks move, i call the dog rings.
if they are siezed , its locked.
dogs are side teeth on the rings that lock in gears using said dogs.
see large red arrow H/L pointing to 1 dog set.
http://www.fixkick.com/tranny/xfr-case/transfer-case.html
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