products details

Home Products

R335-7 Excavator Hydraulic Pump 31NA-10010 K3V180DT-9C69-17T Main Pump Construction Equipment Parts

Name: R335-7 Excavator Hydraulic Pump 31NA-10010 K3V180DT-9C69-17T Main Pump Construction Equipment Parts
Brand: Lanzhou Fudong Guangqi Trading Co., Ltd
SKU: K3V180DT-9C69-17T
Price: Negotiable USD
Availability: InStock

Model Number:	K3V180DT-9C69-17T
MOQ:	1 Pc
Payment Terms:	T/T

Detail Information

Product Description

Detail Information

Place of Origin:

China

Color:

Red

Packaging Details:

Carton

Highlight:

R335-7 excavator hydraulic pump

K3V180DT hydraulic main pump

construction equipment hydraulic pump

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 31NA-10010 K3V180DT-9C69-17T Main Pump Construction Equipment Parts Company Profile

Tags:

Excavator Machinery Parts

Hydraulic Main Control Valve

Diesel Engine Parts

Hydraulic Main Pump

Excavator Swing Motor

Excavator Travel Motor

Swing Motor Gearbox

Excavator Hydraulic Cylinder

Swing Motor Case

Excavator Joystick Handles

Excavator Foot Pedal Valve

Travel Motor Gearbox

Excavator Turbocharger

products details

R335-7 Excavator Hydraulic Pump 31NA-10010 K3V180DT-9C69-17T Main Pump Construction Equipment Parts

R335-7 Excavator Hydraulic Pump 31NA-10010 K3V180DT-9C69-17T Main Pump Construction Equipment Parts

R335-7 excavator hydraulic pump

K3V180DT hydraulic main pump

construction equipment hydraulic pump

Excavator Hydraulic Pump

Piston Type Pump

Excavator Gear Pump

Hydraulic Main Pump ZX650 ZX850-1 Hitachi Excavator Hydraulic Pump

K3V140DT-9N04 EC290 7220-00601 14524052 Excavator Hydraulic Pump Excavator Machinery Parts

Construction Hydraulic Main Pump K3V112DTP-9N49 For DX260LC Replacement Hydraulic Pump 401-00133 401-00020A

EC700C EC700CL EC700B Hydraulic Pump K3V280DTH-1CDR-9N0Y-AVB VOE14621492

DX200-9 Excavator Hydraulic Main Pump OEM Piston Type Pumps Excavator Parts