705-58-47000: Restoring Hydraulic Power to Your Komatsu WA600-1 Wheel Loader

705-58-47000: Restoring Hydraulic Power to Your Komatsu WA600-1 Wheel Loader

When you're operating a giant like the Komatsu WA600-1 in mining or heavy quarrying, hydraulic efficiency isn't just a preference—it's a requirement for survival. The 705-58-47000 (7055847000) hydraulic gear pump is the powerhouse that drives the massive breakout force and steering precision of this 400+ horsepower machine.

This technical guide focuses on the 705-58-47000 main pump, its integration with the S6D170 engine, and the critical signs that it’s time for a replacement to avoid catastrophic downtime.

705-58-47000 Technical Specifications & Compatibility

Precision and durability are the hallmarks of aftermarket hydraulic parts for Komatsu. The 705-58-47000 is engineered to handle the extreme pressure demands of the WA600-1 series.

Diagnostic: Signs of Wear in 705-58-47000 Pumps

A failing 705-58-47000 hydraulic pump in a WA600-1 can lead to a dangerous loss of steering or lift. Look for these indicators:

• Reduced Lift Capacity: The loader struggles to fill the bucket or lift it at full speed, indicating internal GPM loss.
• Severe Cavitation Noise: A loud, metallic "grinding" sound coming from the pump area under load.
• Hydraulic System Heat: Rapidly rising oil temperatures caused by internal friction and oil bypassing worn gears.