TM 10-3930-653-14&P INSPECTION After disassembly, clean all parts and follow the procedures below. below. (1)   Check to see if the control valve spool and reaction piston moves smoothly. (2)   Inspect the sector shaft, needle bearing, and thrust bearing for wear or cracks. (3)  Inspect the worm assembly to be certain that the ball screw, groove is free from undue wear and damage and that it operates properly. ASSEMBLY OF STEERING GEAR Reassembly of the steering gear should be made in reverse order of disassembly. Follow the procedures given below. (1)   Before assembly, thoroughly clean all parts, by a safe method. (2)   Prior to assembling of the top cover, apply grease on the oil seal lip and O-rings. (3)   Tighten the top cover fitting bolts to a torque of 450 to 550 kg-cm (32.5 to 40 ft-lbs). (4)    When  installing  the  top  cover  side  thrust  bearing,  fit  the  smaller  diameter  race  first.  In  the  case  of  the  bottom  side thrust bearing, the larger diameter race should be installed first. (5)   The O-ring of gear box should be held in place with grease. (6)   When installing the spool, lock the valve body provisionally, and adjust the starting torque of the steering shaft at 2 to 5 kg-cm (0.14 to 0.36 ft-lbs) by using the lock nut. (7)   After adjustment of starting torque, caulk the lock nut at the notch of steering shaft (2 parts) (8)  Tighten the bottom cover fitting bolts to a torque of 400 to 500 kg-cm (29 to 36 ft-lbs). (9)   Position the sector shaft as shown in Fig. 6-16. (10) When installing the adjusting screw on the T-groove of sector shaft, use shims to minimize looseness between the T-groove and the adjusting screw. (11)Adjust the pre-load of the sector gear with the adjusting screw so that the steering shaft gets a starting torque of 3 to 8 kg-cm (0.22 to 0.57 ft-lbs). (12) Tighten the lock nut and cap nut of adjusting screw to a torque of 300 to 450 kg-cm (22 to 33 ft-lbs). (13) After assembly, proceed to inspection in the following manner. (a) Rotate the steering shaft to be certain that it rotates without any interference. (b) Rotate the steering shaft clockwise and anti-clockwise to be certain that the sector shaft has an operating angle of over 74.5° (c) When the steering shaft is further turned past the lock position, it should shift in the axial direction by one or two mm (0.04 or 0.08 ft). Also check to see if it automatically returns into the original position when removing your hand. (d) If checks are unsatisfactory, disassemble the steering gear box and repair. 4-216