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Steering Published 25 Nov 2016 Ref JP-1139340

Kobelco: Exhaust Emission Reduction Device

Translated from Japanese · machine translation

Safety-critical recall — steering. If your vehicle is affected, contact your dealer before driving.
Country
Japan
Published
25 Nov 2016
Units affected
10
Reference
JP-1139340

Affected vehicles

コべルコ MK650 2014–2016

Hazard

In the load application valve for diesel particulate filter (DPF) regeneration, improper setting of the valve operating pressure causes valve vibration, which can result in cracks at the coupling portion of the hydraulic oil piping hose. Continued operation in this condition may allow cracks to propagate, causing hydraulic oil leakage, and in the worst case, loss of steering and propulsion capability.
Show original (日本語)
ディーゼル排気微粒子除去フィルター(DPF)再生用の負荷掛けバルブにおいて、バルブの作動圧力の設定が不適切なため、当該バルブが振動し、作動油の配管ホース口金部に亀裂が生じるものがある。そのため、そのままの状態で使用を続けると、亀裂が進展して作動油が漏れ、最悪の場合、操舵および走行ができなくなるおそれがある。

Remedy

For all vehicles, replace the pressure compensator valve and relief valve (components of the load application valve) with corrective parts, replace the pressure detection plug with a service part, and replace the piping hose with a service part.
Show original (日本語)
全車両、負荷掛けバルブの構成部品である圧力補償弁およびリリーフ弁を対策品に、圧力検出プラグを良品に交換するとともに、配管ホースを良品に交換する。

Official source

View the official recall notice