Close your eyes and listen to your PC200-7. In a healthy machine, the hydraulic pump doesn't scream; it hums with a deep, rhythmic bass—a sound of liquid power moving under control. Our 708-2L-00300 Hydraulic Pump is designed to restore that harmonic balance. When you touch the cool, matte-finished ductile iron casing of this pump, you can feel the solidity of a component built to last. There is no scent of cheap industrial paint, only the clean, reassuring aroma of precision-machined steel and rust-inhibiting hydraulic film.
When your old pump fails, your machine becomes sluggish, stuttering under the load of a full bucket. Installing our 708-2L series assembly is like giving your excavator a new heart. As you pull the joystick, the boom rises with a fluid, silent grace that makes the machine feel like an extension of your own arm. The heat buildup that usually saps your power during the afternoon shift is gone, replaced by consistent, unwavering pressure that keeps your project moving. This isn't just about moving oil; it’s about restoring the confidence that when you call for power, your machine answers without hesitation.
Technical Specifications
The following parameters are maintained to ensure absolute engineering alignment with Komatsu Shop Manual (SEN02223) standards.
| Attribute | Specification Details |
| Part Number | 708-2L-00300 / 708-2L-00400 |
| Model Series | 708-2L Series Tandem Piston Pump |
| Compatible Machines | Komatsu PC200-7, PC200LC-7, PC210-7, PC220-7 |
| Construction | High-Pressure Axial Piston Design |
| Maximum Displacement | Standard OEM flow rate for 200 series |
| Body Material | Ductile Cast Iron (Abrasion Resistant) |
| Internal Components | Bimetal Valve Plate & Hardened Pistons |
| Weight | Approx. 145kg (Net Weight) |
| Testing Standard | 100% Bench Test Certified (Flow/Pressure/Leakage) |
Advanced Hydraulics & Performance Highlights
The 708-2L-00300 is the pinnacle of axial piston engineering, focusing on the synergy between mechanical power and hydraulic intelligence.
CLSS Integration Mastery: This pump is the "brain" of the Closed-center Load Sensing System. It communicates perfectly with the main control valve, ensuring that hydraulic flow is only produced when needed. This prevents wasted energy and directly reduces your daily fuel consumption.
Synchronized Tandem Flow: As a tandem pump, it ensures that both tracks and the work equipment receive balanced flow. This prevents the "pulling" to one side that occurs with worn pumps, allowing for perfectly straight tracking on narrow work sites.
Thermal Stability Technology: Internal friction is the enemy of hydraulic life. We use a proprietary bronze-sintered valve plate that reduces heat generation by up to 15% compared to standard aftermarket parts, protecting your main control valve and cylinder seals.
Rapid Pressure Recovery: Engineered for high-frequency operations, the pump’s regulator reacts in milliseconds to load changes, ensuring you never experience "lag" when transitioning from digging to swinging.
Engineering Excellence: Built for the Quarry
We understand that a 20-ton excavator is often the primary earner for your fleet. This pump is built to protect that earning potential through superior material science.
Hardened Piston & Cylinder Block: The pistons are crafted from high-carbon alloy steel, subjected to induction hardening to reach a hardness level that resists the abrasive nature of fine dust particles that occasionally bypass filtration.
Anti-Cavitation Architecture: The internal porting is designed to minimize turbulence. This prevents cavitation—the formation of tiny air bubbles that can erode metal surfaces—ensuring the pump stays quiet and efficient for thousands of hours.
Reinforced Drive Spline: The input shaft is designed to handle the high torque of the Komatsu SAA6D102E/6D107 engine without stripping, even during sudden load spikes or cold-weather starts.
Precision Machined Swash Plate: The swash plate surface is mirror-polished to ensure a smooth transition of the piston shoes, which minimizes internal vibration and extends the life of the pump’s internal bearings.
Optimized Lifecycle & Field Reliability
Investing in the 708-2L-00300 is a commitment to project uptime. We focus on every detail that prevents unplanned maintenance.
Leak-Proof Sealing System: We use high-grade Viton seals that maintain their elasticity under the high-temperature cycles of hydraulic oil, preventing the dreaded "weeping" pump that leads to environmental fines and low oil levels.
Micro-Tolerance Assembly: Every internal clearance is measured with laser precision. This ensures that volumetric efficiency remains high (above 95%) even as the pump reaches the end of its service life.
Drop-In Compatibility: There is no need for modifications to your hydraulic lines or mounting brackets. Every bolt hole and flange on our 708-2L-00300 matches the PC200-7 chassis perfectly, turning a complex repair into a straightforward maintenance task.
Corrosion Protection: The exterior is finished with a high-durability industrial coating that resists the corrosive effects of salt spray, moisture, and chemical exposure in harsh industrial zones.
Why Choose Us?
Reliability in a supplier is just as critical as the reliability of the part. We stand behind our hydraulic components with professional authority.
Decades of Specialist Expertise: We are not generalists; we specialize in Komatsu hydraulic systems. We know the nuances between the Dash-7 and Dash-8 systems, ensuring you get the correct part the first time.
Strict Quality Gatekeeping: Every 708-2L-00300 undergoes a 4-hour rigorous bench test. We simulate real-world digging cycles and high-pressure stalls to ensure the pump you receive is "job-site ready."
Global Support Network: From remote mine sites to urban construction hubs, we have a proven track record of delivering heavy hydraulic components with zero shipping damage, thanks to our export-grade reinforced crating.
Transparent Technical Support: If your technician has a question during installation—whether it's about the pilot line connection or the regulator setting—our engineering team is available to provide clear, actionable advice.
FAQ: Professional Operational Guidance
What is the first step after installing the new 708-2L-00300?
It is vital to "bleed" the air from the pump. Fill the pump case with clean hydraulic oil through the highest drain port before starting the engine. Failure to do this will cause the pistons to run dry, destroying the pump in seconds.
How can I tell if my old pump's regulator is the problem or the pump itself?
Sluggishness that improves with RPM is usually internal pump wear. "Jerky" movement or the engine stalling under load is often a regulator adjustment issue. Our assembly comes with a pre-set regulator for the PC200-7 to solve both problems.
Do I need to change my hydraulic oil when I install this pump?
Absolutely. If your previous pump failed, there may be metallic debris in the system. We highly recommend a full system flush and a change of all hydraulic filters to protect your new investment.
Is this pump compatible with the PC200LC-7L (Long Carriage) model?
Yes, the 708-2L-00300 is the standard hydraulic unit for the PC200-7, PC200LC-7, and the PC200LC-7L models. They share the same engine and hydraulic circuit layout.
What documentation comes with the pump?
Each unit is shipped with a factory test certificate and a basic installation guide. We can also provide digital cross-reference parts lists if required for your maintenance records.
