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New High Quality QC18 14 D14XZ FAW Jiefang Gear Oil Pump Hydraulic Gear Pump for Truck Power Steering Pump

New High Quality QC18 14 D14XZ FAW Jiefang Gear Oil Pump Hydraulic Gear Pump for Truck Power Steering Pump

The 803006891 QC18/14-D14XZ Power Steering Pump is a high-performance hydraulic vane-type steering assist pump designed for use in heavy-duty construction machinery and commercial vehicles. Manufactured to meet stringent industrial standards—often by Hefei Liwei Automotive Oil Pump Co., Ltd. and other certified suppliers—it delivers reliable hydraulic pressure to the vehicle’s power steering gear, significantly reducing driver effort and improving maneuverability under load.

This pump is a critical component in large-scale equipment such as mobile cranes and heavy trucks, where precise control and responsive steering are essential for operational safety and efficiency.

Originally developed as an original fitment part for XCMG QY25K truck cranes, it has become widely adopted across various Chinese-made heavy-duty platforms due to its robust design, stable flow output, and compatibility with standard hydraulic systems.

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Model:
QC18/14-D14XZ
Brand:
FAW

Product Description

Attribute	Description
Product Name	Power Steering Pump (Hydraulic Vane Pump)
Common Names	Steering Oil Pump, Hydraulic Steering Pump, PS Pump
Application Type	Heavy-Duty Construction Equipment / Commercial Trucks
Function	Supplies pressurized hydraulic fluid to the steering gear for smooth and effortless directional control
Design Type	Fixed-displacement vane pump with built-in relief valve
Mounting Style	Bracket-mounted with pulley drive system
Drive Mechanism	Belt-driven from engine crankshaft (V-belt or multi-ribbed belt)

Parameter	Specification
OEM Part Number	803006891
Model Number	QC18/14-D14XZ
Flow Rate	14–16 liters per minute (L/min)
Nominal Displacement	~17–18 cc/rev
Rated Relief Pressure	18.5 MPa (≈185 bar / 2,680 psi)
Rotation Direction	Counterclockwise (CCW / Left-hand rotation when viewed from drive end)
Speed Range	500 – 3,900 RPM (optimal performance between 1,000–3,000 RPM)
Shaft Type	Splined or keyed input shaft (compatible with standard pulleys)
Port Configuration	Standard inlet (suction) and outlet (pressure) ports; SAE or metric thread options
Body Material	Cast iron housing with precision-machined internal components
Sealing Type	Nitrile rubber (NBR) seals; some upgraded versions use fluorocarbon (FKM)
Surface Finish	Anti-corrosion painted or coated exterior