3B1-16 POWER STEERING Sector Shaft If the shaft is worn, twisted, scratched or partially worn, replace it with a new one. N3A0451E Measurement of Sector Shaft Outside Diameter Standard: 39.975 mm (1.574 in) Limit: 39.925 mm (1.572 in) N3A0159E Bearing If the bearing race surface is worn, scratched or seized, replace it with a new assembly. N3A0162E Measurement of Play between Sector Shaft and Needle Roller Bearing Limit: 0.12 mm (0.0047 in) N3A0470E Piston and Worm Shaft If the piston surface is remarkable worn or play is exces- sive, replace with a new assembly.