TM 9-2520-246-34-1 d. Input Shaft Assembly. FRAME 1 1. Check all bearings (1). Refer to inspection, care and maintenance of antifriction bearings, TM 9-214. 2. Check that shaft (2) is not chipped or cracked. 3. Check that shaft splines (3) are not chipped, cracked, twisted or burred. 4. Check that synchronizer (4) is not chipped, cracked and that internal splines are not twisted. 5. Check that gears (5) have no chips, cracks or damaged teeth. 6. Check that all threaded parts are not stripped or crossthreaded. END OF TASK 2-169