Adjusting sector shaft Adjusting rack adjuster.

Adjusting sector shaft Adjusting rack adjuster.

NOTE: Refit drop arm and tighten nut 86. Turn in rack adjuster to increase figure sufficiently to ensure that no backlash exists between drop arm and sector shaft.

81. To set worm on centre, rotate input shaft to full inner-lock full right lock for a left hand drive 87. Lock rack adjuster in position with grub screw. vehicle, full left lock for a right hand drive vehicle. Rotate input shaft back towards centre two full turns. Torque peak check

measured in instruction 34. by 0.23 - 0.34 Nm, 0.17 - 0.25 lbf ft. The final figure may be less, but must not exceed 1.35 Nm, 1.0 lbf ft.

Tighten to 5 Nm, 4 lbf ft

.

With input shaft rotated from lock to lock, rolling

torque figures should be greatest across centre position and equally disposed about centre position.

The condition depends on value of shimming fitted between valve and worm assembly inner bearing cup and casing. The original shim washer value will give correct torque peak position unless major components have been replaced.

82. The box is now on centre and can be adjusted.
83. Hold input shaft and rock drop arm to establish backlash is present. Continue rocking and slowly turn sector shaft adjusting screw clockwise. Continue rotating adjuster screw until backlash has almost been eliminated.
84. Refit locknut and tighten.

• NOTE: It is important steering box is
• centralised before any adjustments are
• made.

88. With input coupling shaft toward the operator,
85. Check maximum rolling torque one and a quarter turns either side of centre position, using a 89. Check torque figures obtained from lock to lock torque wrench and spline socket LRT-57-025. Rotate adjuster screw to obtain across centre torque of 0.34 Nm, 0.25 lbf ft plus torque figure 90. Check also for equal engagement either side of at one and a quarter turns. Tighten adjuster locknut to 60 Nm, 44 lbf ft .

turn shaft fully counter-clockwise.

using torque wrench and spline socket LRT-57-025.

centre.