Name: Hydraulic Main Pump PVD-0B-17P-6AG3 for Hitachi Excavator 4699431 9303390 ZX27 ZX29 Axial Piston Pump Excavator Spare Parts
Brand: Lanzhou Fudong Guangqi Trading Co., Ltd
SKU: PVD-0B-17P-6AG3
Availability: InStock

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Hydraulic Main Pump PVD-0B-17P-6AG3 for Hitachi Excavator 4699431 9303390 ZX27 ZX29 Axial Piston Pump Excavator Spare Parts

Hydraulic main pump for Hitachi excavator

Axial piston pump excavator spare parts

PVD-0B-17P-6AG3 hydraulic pump with warranty

Place of Origin:

China

Model Number:

PVD-0B-17P-6AG3

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Product Details

Packing:

Wooden Box

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Hydraulic main pump for Hitachi excavator

Axial piston pump excavator spare parts

PVD-0B-17P-6AG3 hydraulic pump with warranty

Payment & Shipping Terms

Minimum Order Quantity

1 Pc

Packaging Details

Carton

Delivery Time

7-15days

Payment Terms

T/T

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Product Description

Hydraulic Main Pump PVD-0B-17P-6AG3 for Hitachi Excavator 4699431 9303390 ZX27 ZX29 Axial Piston Pump Excavator Spare Parts

Serving as the primary power component powering excavator hydraulic systems, the main hydraulic pump is driven by the combustion engine to convert mechanical motion into high-pressure hydraulic energy. It conveys pressurized hydraulic oil to hydraulic drive units, enabling every working action of construction excavators. Axial variable piston pumps are widely adopted as the standard power configuration for engineering excavators. Medium and large excavator models employ an integrated twin main pump system paired with a rear-mounted pilot gear pump module. Two independent high-pressure oil delivery loops supply hydraulic fluid to the main control valve assembly, supporting flexible compound working motions with a rated working pressure of 28MPa to 35MPa. Mounted on the rear chassis, the low-pressure pilot pump runs at 3–4MPa with low flow output, providing stable pilot pressure fluid for joystick operation and main valve core positioning. Piston assemblies anchored to the cylinder block and pump housing revolve in tandem with the main shaft, accomplishing cyclic oil suction and pressure buildup processes. Modulating the swash plate tilt angle alters piston travel distance, which directly adjusts the pump’s displacement volume. An external servo regulation system governs swash plate positional changes according to dynamic hydraulic signal feedback. Augmenting the swash plate angle increases fluid throughput and operational speed, while reducing the angle minimizes fuel consumption and prevents engine stalling under heavy loads. The valve plate segregates low-pressure oil suction channels and high-pressure discharge channels to realize orderly hydraulic fluid distribution. Three pivotal control logics underpin the pump’s reliable operational performance. Constant power control automatically scales down pump displacement when working loads surge, protecting engine components and enhancing power utilization efficiency. The LS load-sensing system matches fluid supply to actual on-site working demands and maintains low idle displacement to reduce fuel waste. The HP pressure limiting module truncates excessive pump displacement at peak pressure thresholds, shielding hydraulic pipelines and cylinders from burst failure and structural damage. Typical operational defects include internal oil seepage caused by piston abrasion, valve plate fracture or regulator clogging, leading to slow machine movement and insufficient power output capacity. A locked maximum-displacement regulator triggers persistent engine overload, black smoke exhaust and sudden shutdown during heavy-load construction scenarios. Severe internal leakage generates waste heat from hydraulic pressure loss, resulting in abnormal hydraulic oil temperature spikes. System air intrusion, inadequate hydraulic fluid reserves, and defective bearings or pistons create anomalous mechanical operating sounds. Daily equipment maintenance requires periodic renewal of hydraulic oil and filter elements to preserve the precision of internal pump components. Ensuring robust tightness of oil suction pipes eliminates air intake and mechanical vibration, while maintaining standard hydraulic fluid levels stabilizes long-term pump working performance.

Machinery Test Report	Provided	Warranty	3 Months
Video outgoing-inspection	Provided	Brand Name	OEM
Place of Origin	China	Product Name	Hydraulic Pump
Model	PVD-0B-17P-6AG3	MOQ	1 Piece
Quality	High-Quality	Delivery time	7-15 Days
Standard or Nonstandard	Standard	Application	Excavator Machinery
Size	Standard Size	Packing	Wooden Box

Hydraulic Main Pump PVD-0B-17P-6AG3 for Hitachi Excavator 4699431 9303390 ZX27 ZX29 Axial Piston Pump Excavator Spare Parts 0 Company Profile

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Hydraulic Main Pump PVD-0B-17P-6AG3 for Hitachi Excavator 4699431 9303390 ZX27 ZX29 Axial Piston Pump Excavator Spare Parts

Hydraulic main pump for Hitachi excavator

Axial piston pump excavator spare parts

PVD-0B-17P-6AG3 hydraulic pump with warranty

Hydraulic main pump for Hitachi excavator

Axial piston pump excavator spare parts

PVD-0B-17P-6AG3 hydraulic pump with warranty

Excavator Parts A10VO45DFLR 53R-VUC62N00 -S3042 R902502504 Hydraulic Piston Pumps OEM Brand Guangdong Origin for XE26 XE35

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