168-7873 plunger pump For cat 924G,924GZ,924H,924HZ wheel loader

168-7873 plunger pump For cat 924G,924GZ,924H,924HZ wheel loader Featured Image
  • 168-7873 plunger pump For cat 924G,924GZ,924H,924HZ wheel loader

Short Description:

122-1206 variable axial plunger pump is aftermarket replacement part for CAT TH62, TH63, TH82, TH83 telehandler with 3054 engine. It supplies high-pressure hydraulic oil for boom lifting, telescoping, bucket tilt and steering circuits.

Product Detail

Product Tags

description

168-7873 axial variable piston pump serves as main hydraulic power unit for CAT 924 series wheel loader, driven by C6.6 engine. It converts mechanical power into adjustable high-pressure hydraulic energy for boom, bucket and steering hydraulic systems. Built-in load sensing control valve dynamically changes pump displacement. During heavy bucket digging and loading, pump increases flow to maintain boom speed; under light load or idle travel, it reduces displacement to save fuel and reduce heat accumulation. Internal plungers, cylinder block, valve plate and slipper assemblies are manufactured from high-strength alloy steel with precision grinding and surface hardening treatment. Cast iron housing adopts stress relief annealing to eliminate casting residual stress, resisting vibration and particle contamination on construction and quarry sites. High-performance FKM fluorine rubber sealing assembly delivers reliable high temperature resistance and anti-aging property, reducing internal volumetric leakage and external oil seepage. Every pump passes full hydraulic bench inspection before shipment, including pressure holding, flow characteristic and load-sensing response test.

product parameters

Part No：168-7873（Cross ref:0R-0862,163-2428,168-9027）
Product Type：Variable Displacement Axial Piston Pump
Applicable Equipment：CAT 924G,924GZ,924H,924HZ Wheel Loader, C6.6 Engine
Control Mode：Load Sensing Swash Plate Control
Max Instantaneous Peak Pressure：34 MPa (340 bar)
Rated Rotation Speed：2200 rpm
Working Medium：ISO VG46 Anti-wear Hydraulic Oil
Working Temperature Range：-20℃ ~ +112℃
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
Shaft Specification：Original standard splined shaft
Interchangeability：1:1 OEM interchangeable, direct bolt-on installation
Packaging：Independent anti-rust packaging + export wooden case
Storage Environment：Dry indoor storage, moisture-proof, impact-proof, anti-corrosive gas

advantage

- Load sensing curve optimized for repetitive bucket digging and loading cycle
The load sensing response is tuned for loader typical shovel-and-dump working mode. It quickly boosts pressure during bucket penetration into material pile, automatically reduces flow during boom holding to cut power loss and fuel consumption.
- High breakout pressure retention for tough compacted material pile
Stable pressure holding capability prevents pressure drop when bucket digs compacted soil or gravel, maintaining strong breakout force for heavy loading tasks.
- Compound action flow distribution for simultaneous boom lifting and bucket curling
Precise flow sharing enables boom lifting and bucket curl to operate at the same time without obvious power conflict, improving loading cycle efficiency in quarry and sand yard.
- Reinforced pressure plate structure for frequent impact of shovel loading
Optimized pressure plate design improves shock resistance, resisting cyclic impact load caused by bucket hitting material piles during continuous high-frequency loading.
- Low noise pulsation design to reduce vibration transfer to chassis
Optimized internal flow path reduces pressure pulsation during variable displacement adjustment, lowering vibration transmitted to chassis and extending service life of adjacent hydraulic components.
- Full loading cycle bench test simulating quarry shovel operation
Each pump undergoes cyclic test simulating repeated digging, lifting and dumping, verifying stable performance under long-duration high-frequency loading of quarry sites.

FAQ 

Q1: Which machine does 168-7873 plunger pump fit?
A1: This hydraulic plunger pump is designed for CAT924G,924GZ,924H,924HZ wheel loader with C6.6 engine, serving as main hydraulic pump for boom and bucket operation. Confirm machine serial number before purchase.

Q2: What hydraulic functions does this pump supply?
A2: It provides high-pressure hydraulic oil for boom lifting/lowering, bucket tilt, bucket curl and vehicle steering, completing material digging, loading and stockpiling work.

Q3: What are typical failure symptoms of worn pump?
A3: Typical symptoms: insufficient digging force in compacted material, slow boom lifting speed under heavy load, pressure drop during holding, obvious heat rise during continuous loading, pump abnormal noise and shaft seal oil leakage.

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

Q5: Why loader still lacks digging force 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 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.

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our warehouse

Pack and ship

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