TM  10-3930-638-24&P 3-24. STEERING SYSTEM MAINTENANCE (cont) b. Steering Gear (cont). 7 STEP LOCATION ITEM ACTION REMARKS DISASSEMBLY   (cont) c. Needle roller (26) Remove Place input shaft (27) on a block of wood (cont) to prevent damage. Lightly tap out needle roller (26) using 0.120 inch pin punch and hammer 8 Spool (30) a. Torsion bar (28) Remove Invert spool (30) and catch free falling and spacer (29) parts NOTE Do not attempt to remove pin from end of torsion bar (28). Pin is press fit in torsion bar and is not serviceable separately. b. Drive ring (31) Remove Place end of spool (30) on a table surface, and rotate input shaft (27) to extremes of travel until drive ring (31) falls free c. Input shaft (27) Remove With end of spool (30) on a table surface, and  actuator rotate input shaft clockwise until ball ball (32) (32)  disengages  from  helical  groove  in shaft. Carefully lift out input shaft and catch actuator ball NOTE Remove retainer spring (33) only if required for replacement. d.  Retainer  spring Remove  from Grasp flattened end of retainer spring with (33) spool (30) pliers. Carefully pry flattened end over shoulder on spool with pliers and a screw- driver. Continue pulling motion. to pro- gressively remove retainer spring, and avoid  scratching  or  nicking  spool 9 Housing  (43) NOTE In the following steps, exercise care to prevent loss of small parts. If necessary, shake housing (43) to remove balls (36, 39 and 40). a. Plug (34) Loosen and remove b. O-ring (35) Remove  and discard c. Ball (36) Remove d. Two plugs (37) Loosen and remove 3-166