Technical Information: Common Failure Reasons-KYB Middle East & Africa – KYB is the world's largest manufacturer of OE shock absorbers

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Common failure reasons |

Common questions

COMMON FAILURE REASONS

Shock absorber failure can be grouped into 3 areas:
Oil leakage, physical defect or noise.

OIL LEAKAGE

Noise can be present as either a rattle or a swish. Any damage to the piston rod can affect the oil seal.

CAUSE AND ACTION

Damage due to out worn parts (Dust 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 either a rattle or a swish. Any damage to the piston rod can affect the oil seal.

CAUSE AND ACTION

Damage due to out worn 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.