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Hydraulic Main Pump PSVD2-27E-15 Excavator Hydraulic Pump PSVD2-13E PSVD2-17EPSVD2-19E Excavator Machinery Parts

Hydraulic Main Pump PSVD2-27E-15 Excavator Hydraulic Pump PSVD2-13E PSVD2-17EPSVD2-19E Excavator Machinery Parts

Hydraulic Main Pump PSVD2-27E

Excavator Hydraulic Pump PSVD2-13E

Hydraulic Machinery Parts PSVD2-17E

Place of Origin:

China

Model Number:

PSVD2-27E-15

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Product Details
Color:
Gray
Selling Units:
Single Item
Material:
Iron
Catalog:
Pump
Highlight:

Hydraulic Main Pump PSVD2-27E

,

Excavator Hydraulic Pump PSVD2-13E

,

Hydraulic Machinery Parts PSVD2-17E

Payment & Shipping Terms
Minimum Order Quantity
1 Pc
Packaging Details
Carton
Delivery Time
3-15days
Payment Terms
T/T
Product Description

Hydraulic Main Pump PSVD2-27E-15 Excavator Hydraulic Pump PSVD2-13E PSVD2-17EPSVD2-19E Excavator Machinery Parts

Function


The hydraulic main pump acts as the hydraulic power heart of excavators. Powered by the engine, it turns mechanical power into high-pressure hydraulic energy and delivers pressurized fluid for boom, stick, bucket, travel and swing motors to drive all machine operations.


Type


Most construction excavators utilize axial variable piston pumps. Mid-to-large size machines adopt integrated dual main pumps with a built-in pilot gear pump at the rear side.
High-pressure tandem pump: Left and right pump units supply oil separately to different valve ports of main control valve to realize combined actions, working pressure ranging from 28 to 35MPa.
Low-pressure pilot pump fixed on pump tail runs at 3~4MPa with small flow, supplying pilot oil for control joysticks and main valve spools.



Internal Parts



Housing & cylinder block: Several pistons inside rotate with spindle to finish oil suction and pressurization.
Swash plate changes tilt angle to adjust piston stroke and pump displacement.
Side-mounted regulator pushes swash plate via hydraulic signal: bigger angle brings larger displacement, higher flow and quicker movement; smaller angle cuts displacement and fuel use while avoiding engine stall.
Valve plate separates oil inlet and high-pressure outlet for oil distribution.



Three Control Modes



Constant power control lowers pump displacement automatically under heavy load to protect engine from stalling and fully utilize rated power.
LS load sensing control provides flow as required and keeps low displacement for fuel saving during idle.
HP pressure cut-off minimizes pump displacement once pressure peaks to safeguard tubes and cylinders against rupture.



Common Failures



Slow & weak operation results from worn pistons/valve plate causing internal leakage or stuck regulator.
Black smoke and engine stall under heavy load occur when regulator locks at large displacement leading to overload.
Severe inner leakage turns pressure loss into heat and raises hydraulic oil temperature.
Air suction, inadequate oil or broken bearings/pistons create unusual pump noise.



Maintenance


Regular oil and filter replacement prevents impurity scratch on core parts; seal suction pipe to avoid air intake and shaking; keep proper oil level to prevent pump damage.

Machinery Test Report
Provided
Warranty
3 Months
Video outgoing-inspection
Provided Brand Name
OEM
Place of Origin
China Product Name
Hydraulic Pump
Model
PSVD2-27E-15 MOQ
1 Piece
Quality
High-Quality
Delivery time
7-15 Days
Standard or Nonstandard
Standard
Application
Excavator Machinery
Size
Standard Size
Color  Red

Hydraulic Main Pump PSVD2-27E-15 Excavator Hydraulic Pump PSVD2-13E PSVD2-17EPSVD2-19E Excavator Machinery Parts 0Hydraulic Main Pump PSVD2-27E-15 Excavator Hydraulic Pump PSVD2-13E PSVD2-17EPSVD2-19E Excavator Machinery Parts 1Company Profile

Hydraulic Main Pump PSVD2-27E-15 Excavator Hydraulic Pump PSVD2-13E PSVD2-17EPSVD2-19E Excavator Machinery Parts 2

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