Loss of control
Japan
Published 31 Mar 2005
Ref JP-1114030
Komatsu: Other (Power Transmission)
Translated from Japanese · machine translation
- Country
- Japan
- Published
- 31 Mar 2005
- Units affected
- 8
- Reference
- JP-1114030
Affected vehicles
Komatsu WA320-5 2004
Hazard
Paint was applied to the threaded portion for installing the plug that seals the machined hole at the joint of the hydraulic piping attached to the travel pump of the hydrostatic transmission. As a result, the plug may loosen during operation. If use continues in this condition, in the worst case, the plug may detach, causing massive leakage of hydraulic fluid, loss of hydraulic pressure transmission from the travel pump to the travel motor, and potential inability to travel.
Show original (日本語)
静油圧変速機の走行ポンプに装着されている油圧配管の継手部の加工穴を塞ぐ栓を取り付けるネジ部に塗料を付着させたため、当該栓が走行中に緩むものがある。そのため、そのまま使用を続けると、最悪の場合、当該栓が外れて作動油が大量に漏れ、走行ポンプからの油圧が走行モータに伝わらなくなり、走行不能となるおそれがある。
Remedy
Replace the hydraulic piping joint on all vehicles with corrective parts.
Show original (日本語)
全車両、油圧配管の継手部を対策品に交換する。