TM 9-2520-246-34-1 a. Front Output Shaft Assembly (Model T-136-21). FRAME 1 1. Check that 2. Check that 3. Check that damaged. 4. Check that 5. Check that 6. Check that GO TO FRAME 2 shaft splines (1) are not chipped, cracked or twisted. two shafts (2) are not chipped or cracked. gear (3) is not chipped or cracked and that gear teeth are not inner race key (5) is two sprag (4) is not chipped or cracked. not chipped or cracked. springs (6) are not worn, kinked or twisted. 2-164