Japan
Published 3 Aug 2006
Ref JP-1117091
Komatsu: Pressure Control Transmission
Translated from Japanese · machine translation
- Country
- Japan
- Published
- 3 Aug 2006
- Units affected
- 765
- Reference
- JP-1117091
Affected vehicles
Komatsu WA150-5 2002–2006
Komatsu WA-200-5 2002–2006
Komatsu WA200-5 2002–2006
Komatsu WA270-5 2002–2006
Komatsu WA320-5 2002–2006
Komatsu WR12-5 2002–2006
Hazard
The left and right bolts on the switchover valve of the hydrostatic transmission's travel motor have been tightened with improper torque. When used repeatedly under high-pressure hydraulic fluid conditions, such as during snow removal operations, the bolts may loosen. If operation continues in this state, the O-ring will break, causing hydraulic fluid to leak, and in the worst case, may result in loss of drive capability.
Show original (日本語)
．静油圧変速機の走行モータの切替えバルブにおいて、左右のボルトの締付けトルクが不適切なため、除雪作業時等の作動油が高圧となる条件下で繰り返し使用するとボルトが緩むものがある。そのため、そのままの状態で使用を続けると、オーリングが破損して作動油が流出し、最悪の場合、走行不能になるおそれがある。
Remedy
Replace the bolts and O-ring with new parts on all vehicles, and tighten the bolts to the proper torque.
Show original (日本語)
．全車両、ボルト及びオーリングを新品と交換し、ボルトを適切に締付ける。