Subaru BRZ 2013 · Service Manual Suspension

Front suspension lower arm

Components Removal / installation

FRONT SUSPENSION
FRONT SUSPENSION LOWER ARM
EXPLODED VIEW
REMOVAL
NOTE:
·The following procedure is for LH side.
·Service the RH side in the same procedure as the LH side.
1. Removal of front tire
2. Removal of undercover front AL (Refer to )
3. Removal of undercover COMPL T/M (Refer to )
4. Removal of undercover rear LH (with rear spoiler) (Refer to )
5. Removal of lower arm support plate
(1) Remove the bolt and nut, and remove the lower arm support plate.
6. Disconnection of tie-rod end SUB-ASSY LH (Refer to )
7. Disconnection of steering knuckle LH (Refer to )
8. Removal of stabilizer link ASSY LH (Refer to )
9. Removal of front suspension lower arm ASSY LH
(1) Remove the bolt and nut, and remove the front suspension lower arm ASSY LH.
10. Removal of front suspension lower arm bolt
(1) Using the SST, remove the front suspension lower arm bolt.
SST     20299AG020
DISASSEMBLY
1. Removal of front lower arm bushing No. 1 LH
(1) Using the SST, remove the front lower arm bushing No. 1 LH.
SST     20299AG000  20299AG010
2. Removal of front lower arm bushing No. 2 LH
(1) Using the SST, remove the front lower arm bushing No. 2 LH.
SST     927680000
INSPECTION
1. Inspection of front suspension lower arm ASSY LH
(1) Rotation inspection of ball joint
(a) Check that there is no play by moving the upper and lower portions of front tire in an axial direction with the brake pedal depressed.
(b) If there is play, replace the front suspension lower arm ASSY LH.
(c) Check that there is no play by moving the upper and lower portions of front tire in an axial direction with the brake pedal released.
(d) If there is play, replace the front axle hub.
(e) Place the nut on the stud of the lower arm.
(f) Vibrate and turn the stud.
Criteria :  There is no abnormal interference or play during vibration and turning.
(g) If there is abnormal interference or play during vibration and turning, replace the front suspension lower arm ASSY LH.
(2) Dust cover inspection
(a) Check the dust cover for cracks or grease leakage.
(b) If there are cracks or grease leakage on the dust cover, replace the front suspension lower arm ASSY LH.
ASSEMBLY
1. Installation of front lower arm bushing No. 1 LH
(1) Using the SST, install the front lower arm bushing No. 1 LH in the front suspension lower arm ASSY LH so that the dimensions are within the range shown in the figure.
SST     20299AG000  20299AG010
Captions in illustration
*1
Front suspension lower arm ASSY LH
*2
Front lower arm bushing No. 1 LH
*a
44 to 50°
*b
25.0 to 26.0 mm {0.984 to 1.024 in}
*c
26.5 to 27.5 mm {1.043 to 1.083 in}
*d
Rubber protrusion
2. Installation of front lower arm bushing No. 2 LH
(1) Using the SST, install the front lower arm bushing No. 2 LH in the front suspension lower arm ASSY LH.
SST     927680000
INSTALLATION
NOTE:
·The following procedure is for LH side.
·Service the RH side in the same procedure as the LH side.
1. Installation of front suspension lower arm bolt
(1) Using the SST, install a new front suspension lower arm bolt.
SST     20299AG020

Standard value:
Tightening torque=110N·m { 1122kgf·cm} {81.1ft·lbf}
2. Temporary tightening of front suspension lower arm ASSY LH
(1) Temporarily tighten the part using the bolt and a new nut.
CAUTION:
Insert the bolt from the front of the vehicle.
3. Installation of steering knuckle LH
With a nut, install the front suspension lower arm ASSY LH to the steering knuckle LH.

Standard value:
Tightening torque=51N·m { 520kgf·cm} {37.6ft·lbf}
5. Temporary tightening of lower arm support plate
(1) Using a new bolt and nut, install the lower arm support plate.

Standard value:
Tightening torque=110N·m { 1122kgf·cm} {81.1ft·lbf}
6. Installation of stabilizer link ASSY LH (Refer to )
7. Installation of front tire

Standard value:
Tightening torque=120N·m { 1224kgf·cm} {88.5ft·lbf}
8. Stabilization of vehicle (Refer to )
9. Final tightening of front suspension lower arm ASSY LH
(1) Fully tighten the bolts and nuts.

Standard value:
Tightening torque=85N·m { 867kgf·cm} {62.7ft·lbf}
10. Installation of undercover rear LH (with rear spoiler) (Refer to )
11. Installation of undercover COMPL T/M (Refer to )
12. Installation of undercover front AL (Refer to )
13. Inspection and adjustment of front wheel alignment (Refer to )
14. Initialization of headlight leveling computer (Refer to )
15. Headlight adjustment (Refer to )
16. Mid point setting of the VDC sensor (Refer to )