China 567-9721、593-8367、436-6669 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic main pump adapted for 320D/D2/323D2/326GC/329D/330D/336D/D2XE for sale

567-9721、593-8367、436-6669 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic main pump adapted for 320D/D2/323D2/326GC/329D/330D/336D/D2XE

Name: 567-9721u3001593-8367u3001436-6669 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic main pump adapted for 320D/D2/323D2/326GC/329D/330D/336D/D2XE
Brand: Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.

Price Negotiable

Price: Negotiable

MOQ: 1

Delivery Time: 2 weeks

Brand: CAT

Product Description

567-9721, 593-8367, 436-6669 CAT Medium-Sized Excavator Hydraulic Main Pump

Product Overview

Axial piston hydraulic main pump designed for CAT medium-sized excavators (20-36 tons), compatible with 320D/D2, 323D2, 326GC, 329D, 330D, 336D/D2XE models and similar equipment.

CAT medium-sized excavator hydraulic main pump assembly

Compatible Equipment Models

Primary compatibility includes: 320D, 320D2, 323D2, 326GC, 329D, 330D, 336D, 336D2XE excavators.

Hydraulic Pump Specifications

Pump Type	OEM Part Number	Applicable Equipment
Axial Piston Pump	487-6207	301.5/301.6/301.7CR
Axial Piston Pump	423-0097	305.5E/306E/307E
Axial Piston Pump	272-6959	325D/329D/DL
Axial Piston Pump	369-9655	374F/390F
Axial Piston Pump	307-3063	415F/416F/422F
Gear Pump (Pilot)	560-0886	Full Range Excavators
Axial Piston Pump	295-9426	349 Series
Gear Pump (Auxiliary)	175-6253	Loaders/Backhoes

Complete Hydraulic System Components

Small Excavators (3-10 tons)

Main Pumps: 423-0097, 397-3941, 214-1091, 4I-1023, 348-7627, 7Y-4002, 247-7867, 358-5004

Compatibility: 305.5E, 306E, 307D, 308E, 312D, 317, etc.

Pilot/Gear Pumps: 126-2016, 284-3536

Medium Excavators (20-36 tons)

Main Pumps: 272-6959, 289-7917, 272-6955, 259-0815/10 R-8707, 451-9302, 341-2860, 567-9721, 593-8367, 436-6669, 438-1293, 244-8479, 272-6957, 339-0513, 123-2233, 126-2073, 119-5407, 497-8499, 114-0602, 0R-8102

Rotary Pumps: 204-4916, 204-4922

Pilot/Gear Pumps: 175-6253, 397-6960

Large Excavators (over 37 tons)

Main/Rotary Pumps: 369-9655, 593-3840, 584-0380, 627-1304, 295-9426, 550-4341, 194-8259, 361-0718, 353-5691, 362-8488, 510-7950

Compatibility: 336GC, 340, 345, 349, 374F, 385, 390F, 395GC, etc.

Pilot/Gear Pumps: 564-9801, 234-4638

Frequently Asked Questions

What is the part number for the main pump of Cat 320D?

Common main pump part numbers for Cat 320D include 272-6955 and HPV145 (OEM collaboration model).

How to store a spare Cat hydraulic pump?

Store the pump in a clean, dry, and ventilated area, seal all ports to prevent contamination, and avoid placing heavy objects on it.

What is the difference between a fixed-displacement and variable-displacement Cat pump?

Fixed-displacement pumps deliver a constant flow rate at a given speed, while variable-displacement pumps adjust flow based on system demand, improving energy efficiency.

What causes a hydraulic pump to lose pressure?

Pressure loss is caused by internal pump wear, leaking seals, a faulty relief valve, or air in the hydraulic system.

Are Cat hydraulic pumps compatible with biodegradable hydraulic oil?

Yes, but only if the oil meets Cat's specifications and is compatible with the pump's seal materials; consult a dealer for recommendations.

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.

Location Nan'an, Fujian Province, China

Contact Person liyun

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