840220098 Plunger Pump For construction machinery

Short Description:

840220102 variable axial plunger pump is aftermarket replacement hydraulic spare part for heavy construction machinery. It supplies high-pressure hydraulic oil for boom lifting, bucket tilt and steering circuits.

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Product Detail

Product Tags

description

product parameters

Part No：840220098
Product Type：Variable Displacement Axial Piston Pump
Applicable Equipment：Heavy construction machinery (wheel loader / mining equipment)
Control Mode：Load Sensing Swash Plate Control
Displacement：66 cc/rev
Max Instantaneous Peak Pressure：35 MPa (350 bar)
Rated Rotation Speed：2200 rpm
Working Medium：ISO VG46 Anti-wear Hydraulic Oil
Working Temperature Range：-20℃ ~ +115℃
Main Material：Cast iron housing, high-strength alloy steel internal parts, FKM fluorine rubber seal
Surface Treatment：Precision grinding, surface hardening, stress relief annealing, anti-rust coating
Interchangeability：1:1 OEM interchangeable, direct bolt-on installation
Product Condition：Brand new aftermarket part, 100% hydraulic bench tested

advantage

- Optimized load-sensing response for frequent digging and loading cycles
Refined load sensing logic delivers fast flow response when bucket cuts into compacted gravel, maintaining steady digging torque under heavy digging resistance.
- Compact reinforced pump housing reduces overall installation space
Optimized compact casting structure retains high rigidity while saving installation space, convenient for assembly and maintenance on tight machine compartments.
- Smooth flow transition during multi-action compound operation
Stable flow regulation minimizes pressure fluctuation when boom, bucket and steering work simultaneously, improving operating smoothness for operators.
- Upgraded anti-sticking friction pair for dusty mine environment
Specially treated friction pair reduces sticking risk under contaminated oil condition, extending service life in high-dust mining and quarry working conditions.
- Excellent pressure retention reduces energy loss during static holding
Low internal leakage keeps pressure stable during static holding, cutting down unnecessary power consumption and heat generation under standby load.

FAQ

Q1: Which machine does 840220098 plunger pump fit?
A1: This hydraulic plunger pump fits heavy construction machinery including wheel loader and mining equipment. Confirm machine serial number before purchase.

Q2: What hydraulic functions does this pump support?
A2: It provides high-pressure hydraulic oil for boom lifting, bucket tilt and steering system, used for bulk aggregate excavation, loading and stockpiling in quarries and mines.

Q3: What are typical failure symptoms of worn pump?
A3: Typical symptoms: insufficient digging torque in hard ground, unstable working speed during compound actions, pressure drop under sustained heavy load, continuous temperature rise after long operation, abnormal pump noise under high pressure, shaft seal oil leakage.

Q4: What inspections should be done before installing new pump?
A4: Inspect boom cylinders, bucket cylinder, main control valve and filter elements. Fully flush hydraulic tank and pipelines to remove metal debris. Replace degraded hydraulic oil before assembly.

Q5: Why machine still has weak digging performance after pump replacement?
A5: The fault may not come from pump. Check relief valve calibration, stuck valve spool, clogged filter, damaged cylinder seals or trapped air inside hydraulic circuit. Air bleeding must be completed after installat

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.