COMMON FAILURE REASONS
Shock absorber failure can be grouped into 3 areas:
Oil leakage, physical defect or noise.
OIL LEAKAGE
Normally oil leakage occurs as a result of damaged oil seal or bushing. Any damage to the piston rod can affect the oil seal.
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| CAUSE AND ACTION | ||||
| Damage due to worn out parts (Dust cover, bump rubber). Replace those parts, with new parts, and replace new KYB shock absorber | Damage by tools (plier etc) during installation of Shock Absorber). Do not hold piston rod by any tools. Replace new KYB shock absorber | Unsatisfactory installation of shock absorber causes irregularity. Correct installation with the right instruction or suitable tools. | ||
NOISE
Noise can be present as eit her a rattle or a swish. Any damage to the piston rod can affect the oil seal.
| CAUSE AND ACTION | ||||
| Damage due to worn out parts (Dust cover, bump rubber). Replace those parts, with new parts, and replace new KYB shock absorber | Damage by tools (plier etc) during installation of Shock Absorber). Do not hold piston rod by any tools. Replace new KYB shock absorber | Unsatisfactory installation of shock absorber causes irregularity. Correct installation with the right instruction or suitable tools. | ||
PHYSICAL DEFECT
Physical defects are bent or broken shock absorbers.
| CAUSE AND ACTION | ||
| Pressure by frozen liquid put in the strut. Do not put any liquid in the strut housing. | Tightened with impact wrench. Do not use any power tools. |
| CAUSE AND ACTION |
| Wrong Installation of shock absorbers and equivalent parts. Confirm KYB Insruction Sheet and Car Manufacturer Manual, and Replace Wrong parts or procedure. |
Coil spring failure is mainly caused by corrosion. If the epoxy power coating on the spring is damaged during installation, by stone chipping or friction caused by metal to metal contact with spring seats, exposed metal will start to rust (this can be very rapid in cold / wet climates).
Because of the high stress levels involved during compression and recoil, any rust will be a weak point that will cause the spring to break. The break often occurs at the top or bottom of the spring because of the higher levels of stress.
