Reliable Aftermarket Replacement Hydraulic Pump for Komatsu PC100 Series

The hydraulic main pump is one of the most important components in an excavator hydraulic system. It controls hydraulic oil flow and pressure, directly affecting digging power, working speed, and overall machine efficiency.

For Komatsu PC100-1 and PC100-2 excavators, the HPV55 Hydraulic Main Pump 705-58-34000 / 7055834000 is a reliable replacement option designed for restoring hydraulic system performance and reducing machine downtime.

When the original hydraulic pump becomes worn after years of operation, replacing it with a quality aftermarket hydraulic pump can help your excavator return to stable and efficient operation.

Product Details

Product Name: HPV55 Hydraulic Main Pump
Part Number: 705-58-34000 / 7055834000
Pump Type: Hydraulic Piston Main Pump
Application: Komatsu Excavator

Compatible Models:

• Komatsu PC100-1 Excavator
• Komatsu PC100-2 Excavator
• Komatsu PC100 Series Hydraulic System

This replacement hydraulic pump is designed to provide a proper fit and dependable performance for Komatsu PC100 excavators.

When Should You Replace Your Komatsu PC100 Hydraulic Pump?

A worn hydraulic pump can affect excavator productivity and increase operating costs. Here are some common signs that your hydraulic main pump may need replacement.

1. Reduced Excavator Power

If your Komatsu PC100 excavator cannot provide the same digging force as before, the hydraulic pump may no longer be generating enough pressure and flow.

Common symptoms include:

• Weak digging force
• Slow boom lifting
• Poor bucket performance
• Reduced working efficiency

2. Slow Hydraulic Response

A damaged hydraulic pump can cause delayed movements during operation.

You may notice:

• Slow arm movement
• Slow swing operation
• Unstable hydraulic response

Replacing the worn pump can help restore smoother machine operation.

3. Unusual Hydraulic Pump Noise

A healthy hydraulic pump should operate smoothly.

Abnormal sounds such as whining, vibration, or grinding noises may indicate internal wear, insufficient lubrication, or hydraulic contamination.

4. Hydraulic Oil Overheating

A worn pump often loses efficiency and creates additional heat inside the hydraulic system.

High hydraulic oil temperature can accelerate wear of other components, including valves, cylinders, and seals.

Benefits of Replacing with HPV55 Hydraulic Main Pump 705-58-34000

Restore Hydraulic Performance

A properly functioning hydraulic pump helps maintain stable oil flow and pressure, allowing your Komatsu PC100 excavator to work efficiently in demanding conditions.

Reduce Maintenance Costs

Compared with purchasing a new machine or performing expensive hydraulic repairs, replacing the hydraulic main pump is a practical solution for extending excavator service life.

Reliable Aftermarket Replacement

The 705-58-34000 hydraulic pump is manufactured as an aftermarket replacement component, providing a cost-effective option for customers who need dependable hydraulic system repairs.

Installation Tips for Komatsu Hydraulic Pump Replacement

Before installing a new hydraulic pump, always check the hydraulic system condition:

Clean Hydraulic Oil System

Contaminated oil can damage a new pump. Replace hydraulic filters and clean the system when necessary.

Check Hydraulic Lines

Inspect hydraulic hoses and connections for leaks or damage before installation.

Confirm Part Number

Always verify your existing pump number and excavator model before ordering to ensure compatibility.

Conclusion

The HPV55 Hydraulic Main Pump 705-58-34000 / 7055834000 is an ideal replacement solution for Komatsu PC100-1 and PC100-2 excavators experiencing hydraulic performance issues.

By replacing a worn hydraulic pump, operators can improve machine efficiency, reduce downtime, and keep their excavators working reliably for longer.

For customers looking for a dependable replacement hydraulic pump for Komatsu PC100 series excavators, the 705-58-34000 hydraulic main pump provides a practical and economical solution.