Hyundai Elantra AD: General Information - Suspension System - Hyundai Elantra AD 2017-2020 Service ManualHyundai Elantra AD: General Information

Specifications

Specifications
Front Suspension

Item
Specification
Suspension type
Mac Pherson Strut
Shock absorber
Type
Advanced Valve(RS Valve)

Rear Suspension

Item
Specification
Suspension type
Torsion Beam Axle
Shock absorber
Type
Advanced Valve(RS Valve)

Wheel & Tire

Item
Specification
Wheel
Aluminum
6.0J * 15
6.5J * 16
7.0J * 17
7.5J * 18
Steel
6.0J * 15
Tire
195/65 R15
205/55 R16
225/45 R17
225/40 R18
Spare tire
TMK (tire mobility kit)
T125/80 D15
T125/80 D16
Tire pressure kPa (psi)
195/65 R15
230 (33)
205/55 R16
230 (33)
215/45 R17
230 (33)
225/40 R18
230 (33)
T125/80 D15
420 (60)
T125/80 D16
420 (60)

Wheel Alignment

Item
Specification
Front
Toe-in
Total
0.1° ± 0.2°
Individual
0.05° ± 0.1°
Camber angle
-0.55 ± 0.5°
Caster angle
4.5° ± 0.5°
King-pin angle
14.0° ± 0.5°
Ride Height
367 ± 10 mm (14.4488 ± 0.3937)
Rear
Toe-in
Total
0.34° ± 0.3°
Individual
0.17° ± 0.15°
Camber angle
-1.2° ± 0.5°
Ride Height
364 ± 10 mm (14.3307 ± 0.3937)

Tightening Torques

Front Suspension
Item
Tightening torque (kgf.m)
N.m
kgf.m
lb-ft
Hub nuts
107.9 ~ 127.5
11.0 ~ 13.0
79.6 ~ 94.0
Lower arm to sub frame (Front)
117.7 ~ 137.3
12.0 ~ 14.0
86.8 ~ 101.3
Lower arm to sub frame (Rear)
156.9 ~ 176.5
16.0 ~ 18.0
115.7 ~ 130.2
Lower arm to knuckle
58.8 ~ 70.6
6.0 ~ 7.2
43.4 ~ 52.1
Tie rod end castle nut
24.5 ~ 34.3
2.5 ~ 3.5
18.1 ~ 25.3
Steering gear box to sub frame
88.3 ~ 107.9
9.0 ~ 11.0
65.1 ~ 79.6
Stabilizer bar to stabilizer link
98.1 ~ 117.7
10.0 ~ 12.0
72.3 ~ 86.8
Stabilizer bar to sub frame
44.1 ~ 53.9
4.5 ~ 5.5
32.5 ~ 39.8
Stabilizer bar to front strut assembly
98.1 ~ 117.7
10.0 ~ 12.0
72.3 ~ 86.8
Front strut assembly to front axle
156.9 ~ 176.5
16.0 ~ 18.0
115.7 ~ 130.2
Sub frame mounting bolt & nut
156.9 ~ 176.5
16.0 ~ 18.0
115.7 ~ 130.2
Sub frame stay bolt
44.1 ~ 53.9
4.5 ~ 5.5
32.5 ~ 39.8
Bolt connecting universal joint to pinion
32.4 ~ 38.3
3.3 ~ 3.8
23.9 ~ 27.5
Roll rod bracket to roll rod support bracket fixing bolt & nut
107.9 ~ 127.5
11.0 ~ 13.0
79.6 ~ 94.0

Rear Suspension

Item
Tightening torque (kgf.m)
N.m
kgf.m
lb-ft
Hub nuts
107.9 ~ 127.5
11.0 ~ 13.0
79.6 ~ 94.0
Shock absorber to body
49.0 ~ 63.7
5.0 ~ 6.5
36.2 ~ 47.0
Shock absorber to torsion beam axle
98.1 ~ 117.7
10.0 ~ 12.0
72.3 ~ 86.8
Torsion beam axle to frame
156.9 ~ 176.5
16.0 ~ 18.0
115.7 ~ 130.2
Bitmap Torsion beam axle to brake caliper
63.7 ~ 73.5
6.5 ~ 7.5
47.0 ~ 54.2

Special Service Tools

Special Service Tools

Tool (Number and Name)
Illustration
Use
09546-26000
Strut spring compressor

Compression of coli spring
09568-1S100

Saperate the ball joint from the front alxe
09546-3X100
Shock absorber lock nut removal tool

Used for remove the shock absorber lock nut.

Troubleshooting

Troubleshooting

Symptom
Possible cause
Remedy
Hard steering
Improper front wheel alignment
Excessive turning resistance of lower arm ball joint
Low tire pressure
No power assist
Correct
Replace

Adjust
Repair and replace
Poor return of steering wheel to center
Improper front wheel alignment
Correct
Poor or rough ride
Improper front wheel alignment
Malfunctioning shock absorber
Broken or worn stabilizer
Broken or worn coil spring
Worn lower arm bushing
Correct
Repair or replace
Replace
Replace
Replace the lower arm assembly
Abnormal tire wear
Improper front wheel alignment
Improper tire pressure
Malfunctioning shock absorber
Correct
Adjust or replace
Replace
Wandering
Improper front wheel alignment
Poor turning resistance of lower arm ball joint
Loose or worn lower arm bushing
Correct
Repair

Retighten or replace
Vehicle pulls to one side
Improper front wheel alignment
Excessive turning resistance of lower arm ball joint
Broken or worn coil spring
Bent lower arm
Correct
Replace

Replace
Repair
Steering wheel shimmy
Improper front wheel alignment
Poor turning resistance of lower arm ball joint
Broken or worn stabilizer
Worn lower arm bushing
Malfunctioning shock absorber
Broken or worn coil spring
Correct
Replace

Replace
Replace
Replace
Replace
Bottoming
Broken or worn coil spring
Malfunctioning shock absorber
Replace
Replace

Wheel /tire noise, vibration and harshness concerns are directly related to vehicle speed and are not generally affected by acceleration, coasting or decelerating. Also, out-of-balance wheel and tires can vibrate at more than one speed. A vibration that is affected by the engine rpm, or is eliminated by placing the transmission in Neutral is not related to the tire and wheel. As a general rule, tire and wheel vibrations felt in the steering wheel are related to the front tire and wheel assemblies. Vibrations felt in the seat or floor are related to the rear tire and wheel assemblies. This can initially isolate a concern to the front or rear.

Careful attention must be paid to the tire and wheels. There are several symptoms that can be caused by damaged or worn tire and wheels. Perform a careful visual inspection of the tires and wheel assemblies. Spin the tires slowly and watch for signs of lateral or radial runout. Refer to the tire wear chart to determine the tire wear conditions and actions

Wheel and tire diagnosis
Rapid wear at the center
Rapid wear at both shoulders
Wear at one shoulder

Center-tread down to fabric due to excessive over inflated tires
Lack of rotation
Excessive toe on drive wheels
Heavy acceleration on drive
Under-inflated tires
Worn suspension components
Excessive cornering speeds
Lack of rotation
Toe adjustment out of specification
Camber out of specification
Damaged strut
Damaged lower arm
Partial wear
Feathered edge
Wear pattern

Caused by irregular burrs on brake drums
Toe adjustment out of specification
Damaged or worn tie rods
Damaged knuckle
Excessive toe on non-drive wheels
Lack of rotation

Front Suspension System
Components and Components Location Components Location 1. Front strut assembly 2. Drive shaft 3. Steering gearbox 4. Lower arm 5. Sub frame 6. Stabilize ...