Ball-Nut Rotation

Fig 1: Identifying Ball-Nut Rotation And Valve Housing Assembly

Courtesy of ISUZU MOTOR CO.

Hold the ball-nut and valve housing assembly vertically and see if the ball-nut lowers by turning smoothly. If the ball-nut does not lower smoothly, check the worm shaft for bending and foreign matter.

NOTE: When testing the ball-nut and valve housing assembly, do not let it travel all the way to the end of worm shaft, or damage to the ball tubes will result.

Check sector shaft outside diameter.

Limit: 31.7 mm (1.25 in)

Fig 2: Checking Sector Shaft Outside Diameter

Courtesy of ISUZU MOTOR CO.