Hydraulic Pump 705-73-29010 Replacement Guide for Komatsu Wheel Loaders

Komatsu wheel loaders such as WA100-1, WA120-3 and WA150-1 are widely used in construction, agriculture and material handling applications. After years of operation, hydraulic system components may experience wear, and the hydraulic pump is one of the most important parts affecting machine performance.

The 705-73-29010 hydraulic pump is a replacement solution designed for several Komatsu wheel loader models, including WA100-1, WA120-1, WA120-3, WA150-1 and other compatible applications.

Common Symptoms of Hydraulic Pump Failure

A damaged hydraulic pump may cause:

• Slow lifting speed
• Weak bucket operation
• Hydraulic pressure loss
• Unusual noise from the pump area
• Increased hydraulic oil temperature
• Intermittent hydraulic performance

When these problems appear, checking the hydraulic oil condition, filters and system pressure is recommended before replacing the pump.

Why Replace a Worn Hydraulic Pump?

The hydraulic pump converts engine power into hydraulic pressure, allowing the loader to operate lifting, steering and working functions efficiently.

A worn pump can reduce machine productivity and increase operating costs. Replacing the damaged pump with a properly matched replacement part can help restore hydraulic performance.

Compatible Komatsu Models

705-73-29010 hydraulic pump is commonly used for:

• Komatsu WA100-1
• Komatsu WA100-3A
• Komatsu WA120-1
• Komatsu WA120-3
• Komatsu WA150-1
• Komatsu WA180-1
• Komatsu WR11-1
• Komatsu WR11-3

Compatibility should always be confirmed by checking the machine model and original part number before ordering.

Installation Tips

Before installing a new hydraulic pump:

1. Clean the hydraulic system.
2. Replace contaminated hydraulic oil if necessary.
3. Check suction lines and filters.
4. Fill the pump with clean hydraulic oil before operation.
5. Test hydraulic pressure after installation.

Proper installation helps extend the service life of the replacement pump.