Name: Hydraulic Main Pump K3V112DTP - 9T8L SY205 Main Pump SY215 Main Pump SY2158L Main Pump Hydraulic Pump Excavator
Brand: Lanzhou Fudong Guangqi Trading Co., Ltd
SKU: K3V112DTP - 9T8L
Availability: InStock

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Hydraulic Main Pump K3V112DTP - 9T8L SY205 Main Pump SY215 Main Pump SY2158L Main Pump Hydraulic Pump Excavator

Hydraulic main pump K3V112DTP

Excavator hydraulic pump SY205

SY2158L main pump with warranty

Place of Origin:

China

Model Number:

K3V112DTP - 9T8L

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Product Details

Color:

Black

Highlight:

Hydraulic main pump K3V112DTP

Excavator hydraulic pump SY205

SY2158L 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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guangqi334@gmail.com

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Product Description

Hydraulic Main Pump K3V112DTP - 9T8L SY205 Main Pump SY215 Main Pump SY2158L Main Pump Hydraulic Pump Excavator

Function

The hydraulic main pump is the primary power component of excavator hydraulic systems. Driven by the engine, it converts mechanical energy into high-pressure hydraulic energy, and delivers pressurized medium to hydraulic motors to drive boom, stick, bucket, travel and swing operations.

Type

Axial variable piston pumps are extensively used on engineering excavators. Medium and large excavators adopt integrated dual main pumps with a rear pilot gear pump.
The dual high-pressure pumps have independent oil supply routes, feeding the main control valve for composite actions, with working pressure 28~35MPa.
The low-pressure pilot pump at the pump tail operates at 3~4MPa with low flow, providing pilot control oil for operating handles and main valve spools.

Internal Parts

Multiple piston assemblies inside the housing and cylinder block rotate with the main shaft to complete oil suction and pressurization.
The swash plate adjusts tilt angle to change piston stroke and pump displacement. The external servo regulator controls the swash plate via hydraulic feedback signals.
A larger tilt angle increases flow and operation speed; a smaller angle reduces fuel consumption and prevents engine stall.
The valve plate separates low-pressure inlet and high-pressure outlet for hydraulic fluid distribution.

Three Control Modes

Constant power regulation automatically lowers pump displacement under increased load to protect the engine and optimize power use.
The LS load sensing system provides flow on demand and keeps low displacement at idle to cut fuel consumption.
The HP pressure limiting function minimizes pump displacement at peak pressure to protect hydraulic pipelines and cylinders from rupture.

Common Failures

Internal leakage caused by worn pistons, damaged valve plates or blocked regulators leads to slow operation and insufficient power output.
Regulator locked at maximum displacement causes engine overload, black smoke and stall under heavy loads.
Excessive internal leakage generates extra heat and causes hydraulic oil temperature to rise abnormally. Air entrainment, low hydraulic fluid or damaged bearings and pistons result in abnormal noise.

Maintenance

Replace hydraulic oil and filters regularly to prevent abrasive damage to precision parts. Keep suction pipelines tightly sealed to avoid air intake and equipment vibration. Maintain hydraulic fluid at the standard level to ensure normal pump operation.

Machinery Test Report	Provided	Warranty	3 Months
Video outgoing-inspection	Provided	Brand Name	OEM
Place of Origin	China	Product Name	Hydraulic Pump
Model	K3V112DTP - 9T8L	MOQ	1 Piece
Quality	High-Quality	Delivery time	7-15 Days
Standard or Nonstandard	Standard	Application	Excavator Machinery
Size	Standard Size	Color	Black

Hydraulic Main Pump K3V112DTP - 9T8L SY205 Main Pump SY215 Main Pump SY2158L Main Pump Hydraulic Pump Excavator 0 Company Profile

Tags：

Hydraulic Main Pump K3V112DTP - 9T8L SY205 Main Pump SY215 Main Pump SY2158L Main Pump Hydraulic Pump Excavator

Hydraulic main pump K3V112DTP

Excavator hydraulic pump SY205

SY2158L main pump with warranty

Hydraulic main pump K3V112DTP

Excavator hydraulic pump SY205

SY2158L main pump with warranty

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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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