Steering
Japan
Published 24 Jun 2016
Ref JP-1138310
Hitachi: Equipment and Other
Translated from Japanese · machine translation
- Country
- Japan
- Published
- 24 Jun 2016
- Units affected
- 8
- Reference
- JP-1138310
Affected vehicles
日立 ZW40 2012–2015
日立 ZW40DTK 2012–2015
Hazard
In shovel loaders, the hydraulic hoses for operating the rotary snow removal attachment were selected inappropriately, resulting in low-pressure-rated hoses being installed in high-pressure sections. Consequently, during snow removal operations, hydraulic pressure exceeding the pressure rating causes the hose to rupture and hydraulic fluid to leak, potentially resulting in failure of the rotary snow removal attachment to operate. Additionally, leakage of hydraulic fluid used for both steering and drive functions may result in loss of steering control or driving capability.
Show original (日本語)
ショベル・ローダにおいて、ロータリ除雪装置を作動させる油圧ホースの選定が不適切なため、高圧部に耐圧性の低いホースが組み付けられた。そのため、除雪作業時に耐圧性能を超える油圧がかかりホースが破裂し、作動油が漏れ、最悪の場合、ロータリ除雪装置が作動しなくなるおそれがある。また、ステアリング及び駆動用を兼ねる作動油が漏れることで操舵不能もしくは走行不能となるおそれがある。
Remedy
All vehicles: replace hydraulic hoses with corrective parts.
Show original (日本語)
全車両、油圧ホースを対策品に交換する。