Kia Optima: Front Suspension System / Sub Frame
Repair procedures
| 1. |
Disconnect the (-) battery terminal.
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| 2. |
Loosen the bolt (A) and remove the universal joint (B).
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Tightening torque :
49.0 - 58.8 N.m (5.0 - 6.0 kgf.m, 36.2 - 43.4 lb-ft)
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Secure the steering wheel so that it does not move.
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Lock the steering wheel in the straight ahead position
to prevent the damage of the clock spring inner cable.
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| 3. |
Remove the front wheel and tire.
(Refer to Tires/Wheels - "Wheel")
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| 4. |
Disconnect the stabilizer link with the front strut assembly after loosening
the nut (A).
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Tightening torque :
98.1 - 117.7 N.m (10.0 - 12.0 kgf.m, 72.3 - 86.8 lb-ft)
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| •
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When loosening the nut (A), fix the outer hexagon of
stabilizer bar link.
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Be careful not to damage the stabilizer link boots.
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| 5. |
Disconnect the tie rod end ball joint from the knuckle by using the SST
(09568-2J100).
| (1) |
Remove the snap pin (C).
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| (2) |
Remove the lock nut (B) and washer (A).
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Tightening torque :
98.1 - 117.7 N·m (10.0 - 12.0 kgf·m, 72.3 - 86.8 lb·ft)
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Do not reuse mounting nut.
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| (3) |
Disconnect the tie rod end ball joint from the knuckle by using
the SST (09568-2J100).
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| 6. |
Loosen the lower arm mounting nut (A).
| (1) |
Remove the snap pin (A).
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| (2) |
Remove the lower arm mounting nut (B) and washer (C).
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Tightening torque :
98.1 - 117.7 N·m (10.0 - 12.0 kgf·m, 72.3 - 86.8 lb·ft)
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To loosen the nut (B), fix the bolt on the opposite side
to prevent it from turning.
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| 7. |
Disconnect lower arm ball joint from the knuckle by using the SST (0K545-A9100).
| (1) |
After removing bolts from the front knuckle, install and tighten
the sub body bolt (A)
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| (2) |
Input the sub body (B) between the front knuckle and the sub
body bolt.
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| (3) |
Tighten the bolt (C) of the sub body to broaden the gap of the
front knuckle.
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| (4) |
Install the safe wire and main body (A) between the front strut
and the lower arm.
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| (5) |
After installing a body (A), rotate the handle (B) clockwise
util the clamp is fixed on the lower arm.
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| (6) |
Tighten the main body bolt (A) slowly and remove the lower arm
from the front knuckle.
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| 8. |
Remove the engine room under cover.
G 2.0 NU MPI (Refer to Engine Mechanical System - "Engine Room Under
Cover")
G 2.5 GDI THETA II (Refer to Engine Mechanical System - "Engine Room
Under Cover")
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| 9. |
Separate the roll rod bracket (C) after loosening the bolts (A), (B).
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Tightening torque
(A) : 107.8 -127.4 N·m (11.0 - 13.0 kgf·m, 79.5 - 94.0 lb·ft)
(B) : 49.0 - 63.7 N.m (5.0 - 6.5 kgf.m, 36.2 - 47.0 lb-ft)
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| 10. |
Remove the heat protector (A).
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| 11. |
Remove the muffler rubber hanger (A).
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| 12. |
Remove the fasner (A).
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| 13. |
Remove the sub frame.
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A : Front sub frame stay
B : Rear sub frame stay
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| (1) |
Loosen the stay bolts (A) from the front sub frame stay.
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Tightening torque :
44.1 - 58.8 N.m (4.5 - 6.0 kgf.m, 32.5 - 43.4 lb-ft)
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[LH]
[RH]
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| (2) |
Loosen the stay bolts (A) from the rear sub frame stay.
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Tightening torque :
44.1 - 58.8 N.m (4.5 - 6.0 kgf.m, 32.5 - 43.4 lb-ft)
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[LH]
[RH]
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| (3) |
Support the sub frame securely with the jack (A).
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If the mission jack is used to remove the subframe, it
may tip forward, which may cause injury.
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| (4) |
Loosen the mounting nut and remove the front sub frame stay (A).
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Tightening torque :
176.6 -196.2 N·m (18.0 - 20.0 kgf·m, 130.1 - 144.6 lb·ft)
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[LH]
[RH]
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| (5) |
Loosen the mounting nut and remove the rear sub frame stay (A).
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Tightening torque :
176.6 -196.2 N·m (18.0 - 20.0 kgf·m, 130.1 - 144.6 lb·ft)
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[LH]
[RH]
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| (6) |
Slowly lower the jack to remove the sub frame.
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| 14. |
Loosen the bolts and remove the steering gear box heat protector (A).
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Tightening torque :
7.8 - 11.7 N.m (0.8 - 1.2 kgf.m, 5.7 - 8.6 lb-ft)
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| 15. |
Remove the steering gearbox (A) from the front sub frame by loosening
the mounting bolts.
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Tightening torque :
107.9 - 127.5 N.m (11.0 - 13.0 kgf.m, 79.6 - 94.0 lb-ft)
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| 16. |
Loosen the mounting bolts and then remove the stabilizer bar (A).
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Tightening torque :
49.0 - 63.7 N.m (5.0 - 6.5 kgf.m, 36.2 - 47.0 lb-ft)
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| 17. |
Remove the lower arm (A).
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Tightening torque
Bolt (B) : 157.0 - 176.6 N·m (16.0 - 18.0 kgf·m, 115.7 - 130.2
lb·ft)
Nut (C) : 157.0 - 176.6 N·m (16.0 - 18.0 kgf·m, 115.7 - 130.2
lb·ft)
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| 18. |
Remove the dynamic damper (A).
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Tightening torque :
44.1 - 53.9 N.m (4.5 - 5.5 kgf.m, 32.5 - 39.8 lb-ft)
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Repair procedures
Removal
1.
Disconnect the (-) battery terminal.
2.
Remove the front wheel and tire.
(Refer to Tires/Wheels - "Wheel") ...
Components and components location
Components and Components
Location
1. Trailing arm
2. Rear shock absorber
3. Rear suspension
4. Rear stabilizer bar
...
Other information:
Repair procedures
Removal and Installation
Engine Room Under Cover
1.
Remove the engine room under cover (A).
Tightening torque:
7.8 - 11.8 N•m (0.8 - 1.2 kgf•m, 5.8 - 8.7 lb•ft)
2.
Instal ...
When the “Check System” warning message appears, the system is not working properly.
In this case, take your vehicle to an authorized Kia dealer and have the system
checked.
WARNING
The Driver Attention Warning system is not a substitute for safe driving
practices. It is the respon ...
Front Stabilizer Bar
Rear Suspension System