Hyundai Sonata: Front Suspension System / Front Strut Assembly Repair procedures

Replacement
1.
Raise the vehicle, and make sure it is securely supported.
2.
Remove the wheel cap (A).

   
Be careful not to damage to the wheel cap (A) when removing the it.
3.
Remove the front wheel and tire (A) from front hub.

Tightening torque :
88.3 ~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft)

   
Be careful not to damage to the hub bolts when removing the front wheel and tire (A).
4.
Loosen the stabilizer link (A) and remove it from the shock absorber.

Tightening torque :
98.1 ~ 117.7 N.m (10.0 ~ 12.0 kgf.m, 72.3 ~ 86.8 lb-ft)

5.
Loosen the wheel speed sensor bracket bolt (A) and brake hose bracket (B).

6.
Disconnect the front strut assembly (A) with the knuckle by loosening the bolt & nut.

Tightening torque :
196.1 ~ 215.7 N.m (20.0 ~ 22.0 kgf.m, 144.7 ~ 159.1 lb-ft)

7.
Remove the front strut assembly and than loosen the strut mounting nuts (A).

Tightening torque :
53.9 ~ 73.5 N.m (5.5 ~ 7.5 kgf.m, 32.5 ~ 39.8 ~ 54.2 lb-ft)

8.
Installation is the reverse of removal.
Disassembly
1.
Compress the coil spring (A) with a SST (09546-26000).
Do not compress the spring more than necessary.

2.
Loosen the self locking nuts (C) from the strut (B).
3.
Remove the insulator, spring seat, coil spring and dust cover from the strut assembly.
4.
Reassembly is the reverse of the disassembly.
Inspection
1.
Check the strut bearing for wear and damage.
2.
Check the spring upper and lower seat for damage and deterioration.
3.
Compress and extend the piston rod (A) and check that there is no abnormal resistance or unusual sound during operation.

Disposal
(1)
Fully extend the piston rod.
(2)
Drill a hole on the (A) section to remove gas from the cylinder.

   
The gas coming out is harmless but be careful of chips that may tly when driling.
Front Strut Assembly Components and Components Location
Components 1. Strut assembly2. Insulator3. Strut bearing4. Spring upper pad5. Coil spring6. Dust cover7. Bumper rubber8. Spring lower pad ...

Front Lower Arm Repair procedures
Replacement 1. Raise the vehicle, and make sure it is securely supported. 2. Remove the wheel cap (A).     Be careful not to damage to the wheel cap (A) when removing the it ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Injector Repair procedures
Inspection 1. Turn the ignition switch OFF. 2. Disconnect the injector connector. 3. Measure resistance between the injector terminals 1 and 2. 4. Check that the resistance is within the specification. Specification: Refer to “Specification” Removal     ...

Hyundai Sonata LF 2014-2019 Service Manual: Relay Box (Passenger Compartment) Components and Components Location
Component Location [Interior Junction Block] ...

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