187-9090/10R-6685 plunger pump For cat 735,730B articulated dump truck

187-9090/10R-6685 plunger pump For cat 735,730B articulated dump truck Featured Image
  • 187-9090/10R-6685 plunger pump For cat 735,730B articulated dump truck

Short Description:

SANY 750 Hengli hydraulic fan pump is variable axial piston pump, original matching spare part for SANY SY750 large mining excavator cooling circuit.

Product Detail

Product Tags

description

187-9090 axial variable piston pump serves as core hydraulic power source for CAT735/730B articulated dump truck. Driven by the engine, it converts mechanical power into adjustable high-pressure hydraulic energy to feed body hoist circuit, brake assist and steering system. Built-in load sensing control valve dynamically modifies pump displacement based on real-time load. When lifting heavy loaded body, it delivers large flow and high pressure; during travelling or light-load transport, it reduces displacement to save engine power and reduce hydraulic heat accumulation. Core internal components including plungers, cylinder block, valve plate and slippers are forged from high-strength alloy steel, processed with precision grinding and nitriding hardening treatment. The friction pair maintains stable volumetric efficiency under repeated impact and cyclic load typical for mining hauling. The thick cast iron pump housing undergoes stress relief annealing to eliminate casting residual stress, resisting heavy impact and continuous vibration in dusty mine haulage roads.

product parameters

Part No：187-9090 /10R-6685
Product Type：Variable Displacement Axial Piston Pump
Applicable Equipment：CAT 735, CAT730B Articulated Dump Truck
Control Mode：Load Sensing Swash Plate Control
Nominal Working Pressure：29 MPa (290 bar)
Max Instantaneous Peak Pressure：34 MPa (340 bar)
Working Medium：ISO VG46 Anti-wear Hydraulic Oil
Working Temperature Range：-25℃ ~ +110℃
Main Material：High-density cast iron housing, high-strength alloy steel core components, FKM fluorine rubber seal
Surface Treatment：Precision grinding, nitriding hardening, stress relief annealing, anti-rust coating
Shaft Specification：Original standard splined shaft
Interchangeability：1:1 OEM original interchangeable, direct installation without modification
Packaging：Independent anti-rust packaging + export wooden case
Storage Environment：Dry indoor storage, moisture-proof, impact-proof, anti-corrosive gas

advantage

Nitrided alloy steel friction pair, stable performance under mine heavy hauling cycles
Plunger, cylinder block and valve plate adopt deep nitrided alloy steel. It keeps stable volumetric efficiency during long-time ore transportation, reduces internal leakage and extends service life under frequent impact load.
- Load sensing control design, energy adaptive for variable hauling weight
High-precision load sensing automatically adjusts pump output flow with hoisting resistance. It delivers full pressure when lifting loaded body; reduces flow during travelling to lower power loss and fuel consumption.
- Reinforced thick cast iron housing, excellent anti-shock and dust resistance for mine road
Thickened reinforced cast iron housing with stress relief treatment. It withstands continuous bumping vibration and heavy dust on mine haulage roads, preventing pump housing deformation and cracking under peak load.
- Premium FKM sealing assembly, reliable sealing under high pressure and wide temperature
High-quality FKM seals resist high temperature and hydraulic oil aging. It reduces external oil seepage and internal leakage, maintaining stable pressure for hoist, brake assist and steering hydraulic circuits.
- Complete bench inspection before delivery, consistent performance and low failure rate
Each pump undergoes pressure retention, flow curve and load-sensing response testing. Strict QC meets OEM hydraulic system requirements for CAT articulated dump trucks.

FAQ 

-Q1: Which machine does 187-9090 /10R-6685 plunger pump fit?
A1: This hydraulic plunger pump is designed for CAT735,730B articulated dump truck, supplies hydraulic power for hoist, brake assist and steering. It is not compatible with other CAT articulated truck generations. Confirm machine serial number before purchase.

Q2: What hydraulic functions does this pump support?
A2: It provides pressurized hydraulic oil for cargo body lifting and tilting, brake assistance and steering system. It handles heavy-load unloading and vehicle steering control for mining hauling.

Q3: What symptoms appear when the plunger pump is worn?
A3: Common signs: slow body lifting speed, insufficient lifting capacity under full load, steering becomes heavy, abnormal noise generated from pump body, oil leakage at shaft seal and pressure drop under heavy load.

Q4: What inspection items should be checked before installing new pump?
A4: Inspect hoist cylinder, brake assist valve, steering valve and filter assemblies. Flush hydraulic tank and pipelines thoroughly to remove metal debris. Replace contaminated hydraulic oil before assembly.

Q5: Why the dump truck still lifts slowly after pump replacement?
A5: Fault may not come from pump. Check relief valve pressure setting, stuck control spool, blocked filter, damaged hoist cylinder seal or trapped air in hydraulic circuit. Air bleeding is required after installation.

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.

our warehouse

our warehouse

Pack and ship

Pack and ship


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