Front lower arm
Repair Procedures
Removal
Disconnect the negative (-) battery cable.
Remove the front wheel and tire.
(See Suspension System — Wheel)
Loosen the lower arm mounting nut (A).
Remove the stop pin (A).
Remove the lower arm mounting nut (B) and washer (C).
Tightening torque: 98.1 - 118 N·m

Disconnect the lower arm ball joint from the steering knuckle using SST (0K545-A9100).
After removing the bolts from the front steering knuckle, install and tighten the body bolt (A) at the bottom.

Insert the auxiliary body (B) between the front knuckle and the auxiliary body bolt.
Tighten the auxiliary body bolt (C) to increase the clearance of the front joint.

Install the safety wire and the main body (A) between the front strut and the lower arm.

After installing the body (A), turn the handle (B) clockwise to secure it to the lower arm with the clamp.

Slowly tighten the main body bolt (A) and separate the lower arm from the front joint.

Loosen the bolts and nuts and remove the lower arm (A) from the subframe.
Tightening torque: 156.9 - 176 N·m

Installation
Install in the reverse order of removal.
Check the alignment.
(See Suspension System - Alignment)
Inspection
Inspect the bushing for wear and damage.
Inspect the lower arm for bending or cracks.
Inspect the lower arm for deformation.
Check all bolts and nuts.
Test yourself
A quick Kia Optima DL3 quiz: every answer comes with an explanation and a link to the manual page.