Name: K3V112DT-9C12 Hydraulic Pump Assembly Excavator Main Piston Pump Construction Machinery Parts K3V112DT-9C12 R220LC-7 R210LC-7 R215-7C R225LC-7 31N6-10050
Brand: Lanzhou Fudong Guangqi Trading Co., Ltd
SKU: K3V112DT-9C12
Availability: InStock

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K3V112DT-9C12 Hydraulic Pump Assembly Excavator Main Piston Pump Construction Machinery Parts K3V112DT-9C12 R220LC-7 R210LC-7 R215-7C R225LC-7 31N6-10050

K3V112DT-9C12 hydraulic pump assembly

excavator main piston pump

hydraulic main pump with warranty

Place of Origin:

China

Model Number:

K3V112DT-9C12

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Product Details

Color:

Red

Highlight:

K3V112DT-9C12 hydraulic pump assembly

excavator main piston pump

hydraulic main 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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+8615294125097

guangqi334@gmail.com

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Product Description

K3V112DT-9C12 Hydraulic Pump Assembly Excavator Main Piston Pump Construction Machinery Parts K3V112DT-9C12

Function

Hydraulic main pump is the core power unit of excavator hydraulics. Driven by engine, it converts mechanical energy to high-pressure hydraulic energy and supplies pressurized fluid to hydraulic motors for all working motions.

Type

Axial variable piston pumps are standard for construction excavators. Medium and large excavators adopt integrated dual main pumps plus rear pilot gear pump.
Dual independent high-pressure oil circuits serve main control valve for composite actions, working pressure: 28~35MPa.
Tail pilot pump works at 3~4MPa (low flow), providing control oil for levers and valve spools.

Internal Parts

Piston assemblies rotate with main shaft to suck and pressurize oil. Swash plate angle adjusts piston stroke and pump displacement.
External servo regulator controls swash plate via hydraulic feedback. Larger angle = higher flow & speed; smaller angle = lower fuel consumption.
Valve plate separates low-pressure inlet and high-pressure outlet for oil distribution.

Three Control Modes

Constant power control: Reduce displacement under heavy load to protect engine.
LS load sensing: On-demand flow, low displacement at idle for fuel saving.
HP pressure limit: Cut displacement at peak pressure to protect hydraulic components.

Common Failures

Internal leakage (worn pistons/valve plate/blocked regulator): Slow operation, low power.
Regulator stuck at max displacement: Engine overload, black smoke, stall.
Excessive leakage: Hydraulic oil overheating. Air intake/damaged parts: Abnormal noise.

Maintenance

Replace hydraulic oil and filters regularly. Ensure suction pipe tightness. Keep oil level within standard range.

Machinery Test Report	Provided	Warranty	3 Months
Video outgoing-inspection	Provided	Brand Name	OEM
Place of Origin	China	Product Name	Hydraulic Pump
Model	K3V112DT-9C12	MOQ	1 Piece
Quality	High-Quality	Delivery time	7-15 Days
Standard or Nonstandard	Standard	Application	Excavator Machinery
Size	Standard Size	Color	Red

Company Profile

Tags：

K3V112DT-9C12 Hydraulic Pump Assembly Excavator Main Piston Pump Construction Machinery Parts K3V112DT-9C12 R220LC-7 R210LC-7 R215-7C R225LC-7 31N6-10050

K3V112DT-9C12 hydraulic pump assembly

excavator main piston pump

hydraulic main pump with warranty

K3V112DT-9C12 hydraulic pump assembly

excavator main piston pump

hydraulic main pump with warranty

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

Hydraulic Pump PVD-1B-28P-8AG4 4331671 4358274 4399045 Hydraulic Piston Pump for EX30 Cx26c Excavator Main Pump

PVD-0B-18B-6AG3-4950A 20400006 Hydraulic Pump for Excavator Small Piston Hydraulic Pump Construction Machinery Parts

PVD-0B-21P-6G3 Hydraulic Pump RB411-61113 RB411-61110 for Kubota U20-5 Mini Excavator Hydraulic Piston Pump

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Internal Parts

Three Control Modes

Common Failures

Maintenance

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