Name: R335-7 Excavator Hydraulic Pump K3V180DT-9C69-17T Main Pump Construction Equipment Parts
Brand: Lanzhou Fudong Guangqi Trading Co., Ltd
SKU: K3V180DT-9C69-17T
Availability: InStock

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R335-7 Excavator Hydraulic Pump K3V180DT-9C69-17T Main Pump Construction Equipment Parts

R335-7 excavator hydraulic pump

K3V180DT hydraulic main pump

construction equipment hydraulic pump

Place of Origin:

China

Model Number:

K3V180DT-9C69-17T

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Product Details

Color:

Red

Highlight:

R335-7 excavator hydraulic pump

K3V180DT hydraulic main pump

construction equipment hydraulic pump

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

R335-7 Excavator Hydraulic Pump K3V180DT-9C69-17T Main Pump Construction Equipment Parts

Function

As the heart of an excavator’s hydraulic system, the main hydraulic pump is powered by the engine. It converts mechanical power into high-pressure hydraulic power, and delivers pressurized oil to hydraulic motors for boom, arm, bucket, travel and swing, so as to drive all machine movements.

Type

Most construction excavators use axial variable piston pumps. Medium and large excavators are fitted with combined twin main pumps plus a rear pilot gear pump.
The two high-pressure pumps feature separate oil circuits, supplying oil to different ports of the main control valve for combined movements, with working pressure ranging from 28 to 35MPa.
The low-pressure pilot pump at the pump end works at 3~4MPa with small flow, supplying control oil for operation levers and main valve spools.

Internal Parts

The shell and cylinder block work with multiple pistons that rotate with the main shaft to finish oil suction and pressurization.
The swash plate adjusts its tilt angle to change piston stroke and pump displacement.
The external servo controller adjusts the swash plate based on hydraulic feedback. A larger tilt angle increases displacement and flow for faster operation; a smaller angle cuts fuel use and prevents engine stalling.
The valve plate divides low-pressure inlet and high-pressure outlet to distribute hydraulic oil.

Three Control Modes

Constant power control automatically cuts pump displacement when load rises, protecting the engine and making full use of power.
The LS load sensing system supplies oil as required. It keeps low displacement at idle to save fuel.
The HP pressure limit function reduces pump displacement at maximum system pressure, protecting hydraulic pipes and cylinders from damage.

Common Failures

Worn pistons, damaged valve plates or blocked regulators cause internal leakage, leading to slow movement and weak power.
If the regulator sticks at maximum displacement, the engine will overload, emit black smoke and stall under heavy loads.
Severe internal leakage turns pressure loss into heat, causing excessive hydraulic oil temperature.
Air in the oil, insufficient hydraulic fluid or faulty bearings and pistons will create unusual noise.

Maintenance

Regularly replace hydraulic oil and filters to avoid wear on precision components. Keep suction pipes well sealed to prevent air intake and machine vibration. Maintain hydraulic oil at standard level to protect the pump.

Machinery Test Report	Provided	Warranty	3 Months
Video outgoing-inspection	Provided	Brand Name	OEM
Place of Origin	China	Product Name	Hydraulic Pump
Model	K3V180DT-9C69-17T	MOQ	1 Piece
Quality	High-Quality	Delivery time	7-15 Days
Standard or Nonstandard	Standard	Application	Excavator Machinery
Size	Standard Size	Color	Red

R335-7 Excavator Hydraulic Pump K3V180DT-9C69-17T Main Pump Construction Equipment Parts 0 Company Profile

Tags：

R335-7 Excavator Hydraulic Pump K3V180DT-9C69-17T Main Pump Construction Equipment Parts

R335-7 excavator hydraulic pump

K3V180DT hydraulic main pump

construction equipment hydraulic pump

R335-7 excavator hydraulic pump

K3V180DT hydraulic main pump

construction equipment hydraulic pump

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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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