sun drum and sun gear are most likely stripped out common problem. trans must me removed and disassembled lot of internet sources on how to rebuild but not an easy task coming from first hand experience two times.
Shift linkages not put in the correct spots.
Filippo Brunelleschi
model t ford
You probably have a broken Sun Gear from hammering into reverse. Its a cage thing that only works the reverse gear. It holds a set of clutch's. You have to pull the entire transmission to fix. Its almost the last thing before the output shaft. Around a $50 part.
I am facing the same exact problem with my Nissan Altima 2000. Did you find the solution?
There are several things that can cause your manual transmission not to shift out of first gear or reverse. The most common cause is a broken shifting fork.
It is the transmission gear selector. P = Park R = Reverse N = Neutral D = Drive 3 = Third Gear 2 = Second Gear L = Low Gear or First Gear Park, Reverse, Neutral, Drive, Third Gear, Second Gear, Low Gear
Reverse is usually the first to go, followed by first gear. Time for a transmission rebuild.
gear shiftner will not move out of park
You need to lift the collar on the gear stick to engage reverse gear
Reverse gear
broken band in tranny. or blown clutches.