Lexus NX manuals

Lexus NX: Inspection

Lexus NX Service Manual / Steering / Steering Column / Steering Column Assembly (for Power Tilt And Power Telescopic Steering Column) / Inspection

INSPECTION

CAUTION / NOTICE / HINT

NOTICE:

  • When using a vise, place aluminum plates between the part and vise.
  • When using a vise, do not overtighten it.

PROCEDURE

1. INSPECT ELECTRIC POWER STEERING COLUMN SUB-ASSEMBLY

(a) Inspect the preload.

(1) Secure the electric power steering column sub-assembly in a vise between aluminum plates or pieces of cloth as shown in the illustration.

NOTICE:

  • Do not overtighten the vise as the electric power steering column sub-assembly may become deformed.
  • Secure the power steering ECU assembly so that it faces straight up.

*a

Cloth

*b

Steering Wheel Set Nut or equivalent

(2) Install the 2 nuts to the electric power steering column sub-assembly.

HINT:

The nuts to use are the steering wheel set nut or equivalents.

Steering wheel set nut part No.

Thread diameter

Thread pitch

90179-12071

12 mm (0.4724 in.)

1.25 mm (0.0492 in.)

(3) Turn the steering main shaft by 180° to the left and right at a speed of 1 turn per second. Repeat these movements 2 to 3 times to center the power steering ECU assembly.

(4) Check the turning torque of the steering main shaft.

Standard preload:

0.9 to 1.5 N*m (10 to 15 kgf*cm, 8 to 13 in.*lbf)

NOTICE:

Make sure that the shaft turns smoothly.

HINT:

If the result is not as specified, center the power steering ECU assembly again.

(b) Inspect the bushings.

(1) Check that the 2 bushings are securely installed to the electric power steering column sub-assembly.

HINT:

If the bushings are missing or damaged, replace the electric power steering column sub-assembly with a new one.

*a

Bushing

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