Our relationship with Ol' Blue didn't start so hot. 283 is reliable and starts on command, but the 4 speed wouldn't shift correctly. One day it stopped shifting all together and I took the top cover off to take a peak. This is what we saw.
Not sure if you can tell, but the plastic shift interlock plate broke.
Upon further tear down, I concluded it was beyond my ability and took it to a transmission shop.
Worst part about this, it happened the day before I left on orders.