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

Hyundai Sonata LF 2014-2019 Service Manual / Suspension System / 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

    C..

    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: Troubleshooting


    Troubleshooting SymptomPossible causeRemedyHard steeringImproper front wheel alignmentExcessive turning resistance of lower arm ball jointLow tire pressureNo power assistCorrectReplaceAdjustRepair or replacePoor return of steering wheel to centerImproper front wheel alignmentCorrectPoor or rough rideImproper front wheel alignmentMalfunctioning shock absorberBroken or worn stabilizerBroken or worn coil springWorn lower arm bushingCorrectRepair or replaceReplaceReplaceReplace the lower arm assemblyAbnormal tire wearImproper front wheel alignmentImproper tire pressureMalfunctioning shock absorberCorrectAdjustRepair or replaceWanderingImproper front wheel alignmentPoor turning resistance of lower arm ball jointLoose or worn lower arm bushingCorrectReplaceRetighten or replaceVehicle pulls to one sideImproper front wheel alignmentExcessive turning resistance of lower arm ball jointBroken or worn coil springBent lower armCorrectReplaceReplaceRepair or replaceSteering wheel shimmyImproper front wheel alignmentPoor turning resistance of lower arm ball jointBroken or worn stabilizerWorn lower arm bushingMalfunctioning shock absorberBroken or worn coil springCorrectReplaceReplaceReplaceRepair or replaceReplaceBottomingBroken or worn coil springMalfunctioning shock absorberReplaceRepair or replace Wheel /tire noise, vibration and harshness concerns are directly related to vehicle speed and are not generally affected by acceleration, coasting or decelerating...

    Hyundai Sonata LF 2014-2019 Service Manual: Specifications


    Specifications Front Suspension ItemSpecificationSuspension typeMac Pherson StrutShock absorberTypeGasHPD (High Performance Damper) Rear Suspension ItemSpecificationSuspension typeMulti linkShock absorberTypeGasHPD (High Performance Damper) Wheel & Tire ItemSpecificationWheelalumium6...

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