Japan
Published 3 Aug 2006
Ref JP-1117092
Komatsu: Pressure Control Transmission
Translated from Japanese · machine translation
- Country
- Japan
- Published
- 3 Aug 2006
- Units affected
- 227
- Reference
- JP-1117092
Affected vehicles
Komatsu WA150-5 2002–2006
Komatsu WA200-5 2002–2006
Komatsu WA270-5 2002–2006
Komatsu WA320-5 2002–2006
Komatsu WR12-5 2002–2006
Hazard
In the travel motor of the hydrostatic transmission, the plug sealing the machined hole in the hydraulic circuit is fastened with improper torque. Under conditions of repeated use with high-pressure hydraulic fluid, such as during snow removal operations, the plug may loosen. Continued use in this condition can cause the O-ring to fail and hydraulic fluid to leak out, potentially resulting in loss of mobility.
Show original (日本語)
．静油圧変速機の走行モータにおいて、油圧回路の加工穴を塞ぐ栓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栓が緩むものがある。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 plug and O-ring with new parts on all vehicles and torque the plug to specification.
Show original (日本語)
．全車両、栓及びオーリングを新品と交換し、栓を適切に締付ける。