Front Suspension

LOWER ARM CHECK

- Check the bushing for wear and deterioration.
- Check the lower arm assembly for bending or breakage.
- Check all bolts for condition and straightness.

LOWER ARM BALL JOINT ROTATION STARTING TORQUE CHECK

Required Special Tool:

- MB990326: Preload Socket





1. Move the ball joint stud several times and install the lower arm nut on the stud. Using special tool MB990326, measure the ball joint rotation starting torque.
Standard value: 3.5 - 6.9Nm (31 - 61 in-lb)
2. If the measured value is not within the standard value, or if the ball joint is difficult to turn or does not turn smoothly, replace the lower arm assembly.

LOWER ARM BALL JOINT DUST COVER CHECK

1. Using your fingers, press the dust cover to check for a crack or damage.

2. If the dust cover has any crack or damage, replace the lower arm assembly (Refer to Lower Arm Removal and Installation).
NOTE:
If the dust cover has a crack or damage, the ball joint could be damaged.
If the dust cover is damaged during the maintenance, replace it.