708-1W-01840 Hydraulic Pump For Komatsu PW98MR wheeled excavator

708-1W-01840 Hydraulic Pump For Komatsu PW98MR wheeled excavator Featured Image
  • 708-1W-01840 Hydraulic Pump For Komatsu PW98MR wheeled excavator

Short Description:

708-1W-00901 is a twin variable axial piston main hydraulic pump for Komatsu PC800-8 heavy mining excavator, matched with CLSS closed load sensing hydraulic system.

Product Detail

Product Tags

description

This variable piston pump adopts E-CLSS electronic closed load sensing control. The pump receives real-time pressure feedback signal to adjust displacement automatically. When multiple actions operate simultaneously, flow can be reasonably distributed to keep steady movement speed. Built-in pressure and power dual protection structure to prevent overload damage caused by sudden impact load.
The pump housing adopts compact refined alloy cast iron, small footprint to fit the limited installation space of wheel excavator. The piston and sliding shoe friction pair uses surface hardening treatment, good wear resistance under frequent start-stop operation. The matched valve plate adopts precision grinding process to control internal leakage steadily. Combined sealing group can resist mud, dust and temperature fluctuation in urban construction sites.
All finished pumps pass bench tests including E-CLSS response test, power limit calibration, continuous cycle fatigue and long-time leakage inspection. Original mounting hole layout and spline interface support direct installation without modification.

product parameters

Part No：708-1W-01840
Product Type：Variable Axial Piston Main Pump with E-CLSS Electronic Closed Load Sensing
Applicable Equipment：Komatsu PW98MR-10 Wheeled Excavator
Core Technology：E-CLSS electronic closed load sensing, power & pressure dual protection
Theoretical Displacement：62 cc/rev
Rated Working Pressure：26.5 MPa (265 bar)
Max Instantaneous Peak Pressure：30 MPa (300 bar)
Rated Working Speed：1900 rpm
Max Allowable Speed：2200 rpm
Max Combined Output Flow：160 L/min
Working Medium：ISO VG46 Anti-wear Hydraulic Oil
Working Temperature Range：-20℃ ~ +105℃
Sealing Grade：Composite high-pressure seal, low internal leakage
Main Material：Compact refined alloy cast iron housing, hardened piston & sliding shoe, precision ground valve plate
Interchangeability：Direct replacement main pump for Komatsu PW98MR-10
Net Weight：Approx 24.6KG
Application：Supply hydraulic power for boom, arm, bucket, swing and wheel travel hydraulic circuits

Applicable Models

This hydraulic main pump is aftermarket replacement spare part:
• Komatsu PW98MR-10 wheeled excavator

Application Scenarios

708-1W-01840 main pump adapts to flexible working scenarios of wheeled excavator:
• Municipal engineering: Urban road repair, trench digging and pipeline laying.
• Urban construction: Foundation excavation in narrow residential areas.
• Road maintenance: Shoulder trimming and debris cleanup.
• Landscaping project: Earth moving and tree pit excavation.
• Small quarry auxiliary work: Material loading and site leveling.

advantage

• E-CLSS electronic closed load sensing system, fast response for composite actions, stable speed during multi-operation.
• Built-in power and pressure dual protection, buffer sudden impact load and protect hydraulic components.
• Compact alloy cast iron pump body, small size, suitable for narrow installation space of wheeled excavator.
• Hardened piston and sliding shoe assembly, reliable wear resistance under frequent start-stop municipal operation.
• Precision ground valve plate, keep stable leakage performance after long-hour cyclic work.
• Composite high-pressure sealing system, good adaptability to muddy and dusty urban construction environment.
• Standard original mounting dimension, convenient field replacement and shorten machine downtime.

FAQ 

Q1: Which machine does 708-1W-01840 hydraulic pump fit?
A1: This main hydraulic pump is designed for Komatsu PW98MR-10 wheeled excavator. Confirm machine serial number before purchase to avoid wrong part selection.

Q2: What are the advantages of wheeled excavator E-CLSS hydraulic system?
A2: E-CLSS adopts electronic signal feedback, response speed is faster than traditional CLSS. It optimizes power matching during frequent turning and digging, saving fuel in municipal repeated operation.

Q3: What are typical failure symptoms of this hydraulic pump?
A3: Common faults: Digging force insufficient; composite action speed unstable; abnormal noise under load; hydraulic oil temperature rising quickly; oil leakage at pump shaft.

Q4: What preparations should be completed before pump installation?
A4: Release residual hydraulic pressure, clean hydraulic tank and pipelines, replace hydraulic oil and return filter. Inspect pressure sensors, main relief valve and hydraulic hoses. After assembly, bleed air and test single and composite actions.

Q5: After pump replacement, wheeled excavator still has unstable speed during composite actions, what are the possible causes?
A5: Unstable composite speed may not be caused by main pump. Check E-CLSS pressure sensor fault, blocked hydraulic filter, aging control valve spool, trapped air inside hydraulic circuit or improper power setting.

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