TM 9-2320-361-34 15-42. INTERMEDIATE CASE MAINTENANCE (Contd) NOTE Assistant will help with steps 8 and 9. 8. Remove seven nuts (13), lockwashers (12), screws (9), retaining ring (10), and two felt pads (3) from main support tube (16). Discard lockwashers (12) and felt pads (3). 9. Remove eight nuts (14), lockwashers (15), screws (2), worm gear (1), and intermediate case (8) from main support tube (16). Discard lockwashers (15). 15-167