Kia Optima: Steering System
Kia Optima DL3 2019-2024 Service and Repair Manual / Steering System
Service data
| Service Data |
|
Item |
Specification |
|
|
Type |
Electric Power Steering System |
|
|
Steering gear |
Type |
Rack & Pinion |
|
Rack stroke |
156 ± 1 mm (6.14 ± 0.0039 in) |
|
|
Steering angle (Max.) |
Inner |
39.7° + 0.5 / -1.5 |
|
Outer |
33.9° |
|
Tightening torque
| Tightening Torque |
|
Item |
N·m |
kgf·m |
lb·ft |
|
Tire wheel hub nut |
107.9 - 127.5 |
11.0 - 13.0 |
79.6 - 94.0 |
|
Universal joint to steering column assembly |
49.0 - 58.8 |
5.0 - 6.0 |
36.2 - 43.4 |
|
Steering column mounting nuts |
25.0 - 29.4 |
2.5 - 3.0 |
14.5 - 21.7 |
|
Steering column mounting bolt |
53.9 - 58.8 |
5.5 - 6.0 |
39.8 - 43.4 |
|
Tie rod end front axle |
98.1 - 117.7 |
10.0 - 12.0 |
72.3 - 86.8 |
|
Tie rod end mounting nut |
49.0 - 53.9 |
5.0 - 5.5 |
36.2 - 39.8 |
|
Lower arm ball joint bolts |
98.1 - 117.7 |
10.0 - 12.0 |
72.3 - 86.8 |
|
Steering gear box mounting bolts |
107.9 - 127.5 |
11.0 - 13.0 |
79.6 - 94.0 |
|
Universal joint to pinion of steering gear |
49.0 - 58.8 |
5.0 - 6.0 |
36.2 - 43.4 |
|
Steering wheel mounting bolt |
39.2 - 49.0 |
4.0 - 5.0 |
28.9 - 36.2 |
Special service tools
| Special Service Tools |
|
Tool Name / Number |
Illustration |
Description |
|
Ball joint puller 09568-2J100 |
|
Use for removal of ball joint |
|
Lower arm ball joint remover 0K545-A9100 |
|
Used for removal of front lower arm ball joint |
Troubleshooting
| Troubleshooting |
|
Symptom |
Probable cause |
Remedy |
|
Play in steering |
Loose yoke plug |
Retighten |
|
Loose steering gear mounting bolts |
Retighten |
|
|
Loose or worn tie rod end |
Retighten or replace as necessary |
|
|
Steering wheel operation is not smooth (Insufficient power assist) |
V-belt slippage |
Readjust |
|
Damaged V-belt |
Replace |
|
|
Low fluid level |
Replenish |
|
|
Air in the fluid |
Bleed air |
|
|
Twisted or damaged hoses |
Correct the routing or replace |
|
|
Insufficient oil pump pressure |
Repair or replace the oil pump |
|
|
Sticky flow control valve |
Replace |
|
|
Excessive internal oil pump leakage |
Replace the damaged parts |
|
|
Excessive oil leaks from rack and pinion in gear box |
Replace the damaged parts |
|
|
Distorted or damaged gear box or valve body seals |
Replace |
|
|
Steering wheel does not return properly |
Excessive turning resistance of tie rod end |
Replace |
|
Yoke plug excessively tight |
Adjust |
|
|
Tie rod and/or ball joint cannot turn smoothly |
Replace |
|
|
Loose mounting of gear box mounting bracket Worn steering shaft joint and/or
|
Retighten |
|
|
Worn steering shaft joint and / or body grommet |
Correct or replace |
|
|
Distorted rack |
Replace |
|
|
Damaged pinion bearing |
Replace |
|
|
Twisted or damaged hoses |
Reposition or replace |
|
|
Damaged oil pressure control valve |
Replace |
|
|
Damaged oil pump input shaft bearing |
Replace |
|
|
Noise |
Hissing Noise in Steering Gear There is some noise with all power steering systems. One of the most common is a hissing sound when the steering wheel is turned and the car is not moving. This noise will be most evident when turning the wheel while the brakes are being applied. There is no relationship between this noise and steering performance. Do not replace the valve unless the "hissing" noise becomes extreme. A replaced valve will also make a slight noise, and is not always a solution for the condition. |
|
|
Rattling or chucking noise in the rack and pinion |
Interference with hoses from vehicle body |
Reposition |
|
Loose gear box bracket |
Retighten |
|
|
Loose tie rod end and / or ball joint |
Retighten |
|
|
Worn tie rod and / or ball joint |
Replace |
|
|
Noise in the oil pump |
Low fluid level |
Replenish |
|
Air in the fluid |
Bleed air |
|
|
Loose pump mounting bolts |
Retighten |
|
Repair procedures
| Service adjustment procedure |
| Steering Wheel Play Inspection |
| 1. |
Turn the steering wheel so that the front wheels are facing straight ahead. |
| 2. |
Mark the center of the steering wheel.
|
| 3. |
Measure the distance that the steering wheel can be turned without moving the front wheels.
|
| 4. |
If the play exceeds standard value, inspect the steering column, shaft, and linkages. |
| Checking Stationary Steering Effort |
| 1. |
Position the vehicle on a level surface and place the steering wheel in the straight ahead position. |
| 2. |
Attach a spring scale to the steering wheel. With the idle RPM, pull the scale and read it as soon as the tires begin to turn.
|
| 3. |
If the measured value exceeds standard value, inspect the steering gear box. |
TPMS Receiver
Description and operation
Description
TPMS Receiver : IBU (Integrated Body Control Unit) integrated management
1.
Mode
(1)
Virgin State
...
Steering wheel
Components and components location
Components
1. Drive
air bag module (DAB)
2. Remote control swtich
3. Steering wheel bezel
4. Steering
wheel
5. ...
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