Pinion Rotating Torque and Rack Sliding Force
AdjustmentAdjust pinion rotating torque as follows:
1. Set gears to Neutral without fluid in the gear.
2. Coat the adjusting screw with locking sealant and screw it in.
3. Lightly tighten lock nut.
4. Tighten adjusting screw to a torque of 4.9 to 5.9 Nm (50 to 60 kg-cm, 43 to 52 inch lbs.).
5. Loosen adjusting screw, then retighten it to 0.05 to 0.20 Nm (0.5 to 2 kg-cm, 0.43 to 1.74 inch lbs.).
6. Move rack over its entire stroke several times.
7. Measure pinion rotating torque within the range of 180° from neutral position.
Stop the gear at the point of maximum torque.
8. Loosen adjusting screw, then retighten it to 4.9 Nm (50 kg-cm, 43 inch lbs.).
9. Loosen adjusting screw by 50° to 110°.
10. Prevent adjusting screw from turning, and tighten lock nut to specified torque.
11. Check steering gear for rack sliding frictional force.
Around neutral point of rack stroke ±5.5 mm (±0.217 inch): 122.6 - 166.7 N (12.5 - 17 kg, 27.6 - 37.5 lb.)
Except for neutral point: 122.6 - 186.3 N (12.5 - 19 kg, 27.6 - 41.9 lb.)
- If sliding frictional force is out of specification, repeat the adjustment procedure, starting from No. 4.
- After the readjustment, if sliding force is still out of specification, steering gear is damaged.
12. Measure pinion rotating torque within the range of ±100° from the neutral point.
Average rotating torque [(Max. measured value + Min. measured value) x 0.5]: 0.8 - 1.3 Nm (8 - 13 kg-cm, 6.9 - 11.3 inch lbs.)
Maximum torque increment: Less than 0.4 Nm (4 kg-cm, 3.5 inch lbs.)
Except for above mentioned measuring range: Maximum rotating torque 1.9 Nm (19 kg-cm, 16 inch lbs.)
Maximum torque increment Less than 0.6 Nm (6 kg-cm, 5.2 inch lbs.)
- If pinion rotating torque is not within specification, readjust it.
- After the readjustment, if pinion rotating torque is still out of specification, steering gear is damaged.
13. Check rack sliding force on vehicle as follows:
a. Install steering gear onto vehicle, but do not connect tie-rod to knuckle arm.
b. Connect all piping and fill with steering fluid.
c. Start engine and bleed air completely.
d. Disconnect steering column lower joint from the gear.
e. Keep engine at idle and make sure steering fluid has reached normal operating temperature.
f. Pull tie-rod slowly to move it from neutral position to ±11.5 mm (±0.453 inch) at speed of 3.5 mm (0.138 inch). Check that rack sliding force is within specification.
Rack sliding force:
16 inch tire 235 - 294 N (24 - 30 kg, 53 - 66 lb.)
17 inch tire 255 - 294 N (26 - 30 kg, 57 - 66 lb.)
g. Check sliding force outside above range.
Rack sliding force: Not more than 294 N (30 kg, 66 lb.)
- If rack sliding force is not within specification, readjust by repeating adjustment procedure from the beginning.
- If rack sliding force is still out of specification after readjustment, gear assembly needs to be replaced.