reasons:
Left in steering gear (rearrangement - Replacing sucked parts)
Left in the lever (rearrangement - Replacing the ejected parts)
Corrosion of parts of a saddle (rearrangement - Replacing corroded parts)
Wheel bearings (faulty parts replacement)
2. Rigidity:
reasons:
Low or Unbalanced Tire Wind (Tire Wind Adjustment)
Friction in the steering wheel box (lubrication - Rearrangement - Replacing sucked parts)
Friction in levitation (lubrication - Reset - Replacing ingots)
Friction in the King Pin (lubrication - Replacing the corroded parts)
No Command (Caster-Camber-Twain) (if necessary, re-set)
Chassis deformation (scale the chassis)
Weakening of the front springs (replacement of springs)
3. Vehicle Confusion:
reasons:
Low or no tire winds (tire inflation to the correct extent)
Leakage lever (reset - replacement of ingested parts - lubrication)
Steering gear lever (rearrangement - Sucking parts replacement - Lubrication)
Do not trim the front wheel (Castor-Camber) (adjust the wheel's angles)
Loose levers (reset - replacement parts)
Gearing in gear (rearrangement - Replacing parts)
Larging in the King Pin (Replacing Stuffed Parts)
Slipping back springs (tightening)
Faulty balance rods (tightening parts and fittings - Replacing in case of failure)
4. The car is pulled to one side in the driving direction:
reasons
Unnecessary tire pressure (tire wind)
Inequality of Camber or Caster (Angle Adjustment)
Inequitable drop - Fracture - Lacing fittings springs (tightening - Replacing faulty parts)
Wheel rigidity (rearrangement - Replacement parts)
The wheels are not the same (test the wheels of the wheels - tune the chassis - tighten the parts - replace the faulty parts)
5. The car is pulled to a side when braking:
reasons
Braking (Brake Review - Reset)
No tire inflation rate (tire pressure setting)
Incorrect or uneven castor (reset)
6. Front wheel has vibration at low speed:
reasons
Inequality or low tire pressure (tire pressure setting)
Leakage Leakage (Reset - Replacing Stuffed Parts)
Leaking King Pen (Replacing Sliced ​​Parts)
Two-wheel steering gear (rearrangement - Replacing sucked parts)
High elasticity of front springs (switching - tightening of fittings)
It's not correct or not equal (reset)
Irregularity of tire groove (wearing tire replacement)
7. The front wheels are unstable at high speeds (high velocity vibration):
reasons :
Wheels are unbalanced (Balance wheels)
The wheels turn out to a large furrow from a circular position (in the form of a change)
Defective shock absorber (repair or replace)
8. Decline:
Tire inflation pressure is low or unbalanced (adjust tires to the correct wind pressure)
Dropping the springs (tightening fittings - Replacing - repairing)
Defective shock absorbers (repair or replacement)
Leakage Leakage (Reset - Replacing Stuffed Parts)
Left in steering gear (rearrangement - Replacing sucked parts)
9. Tires on the screws produce sound:
reasons:
High speed (move the screws at a lower speed)
Low or unbalanced tire inflation pressure (inflate the tire to the correct pressure)
Wheel angles are not steady (test and adjust)

10. Rough and Hard Driving:
reasons:
Tire pressure too high (reduce the wheel pressure to the correct value)
Defective shock absorbers (repair or replace)
11. Inadequate tire wear:
reasons:
Wear two sides of the tire contact surface due to the low pressure (tire pressure setting)
Wear the middle of the contact surface with a lot of wind pressure (inflate the tire to the correct pressure)
Wear one side of the contact surface due to the excessive amount of chamomile (adjust the angle of the calf)
Wear the edges of the vein or excessive trowel in the screws (set the twine or the trowel in the screws - move the screws at a lower speed)
Corner wear due to high speed in head screws (Brakes - Adjust wheel angles)
Non-uniform or local wear due to mechanical causes (adjust wheels, adjust levers)
Fast wear due to high speed (for faster tire lifetime wear)
12. Tilting the car on the screws:
reasons:
Slip the balance bar (tighten)
Spring Break or Slight Spring (Repair or Replace)
Setting wrong (not set)
13. Break the spring:
reasons :

No car load (do not overload car)
Shorten the center of the bullet or the corpuscles of the yo-shape (tighten the nut)
Defective connector (repair or replace)
Firmness of the spring earring (release or replace it)
14. Weakness of the spring:
reasons :
Leakage fracture (replace it)
Poor shock (replace it)
Sharpen spiral shortening (add high washers)
Defective shock absorber (repair or replace)