438-1293、244-8479、272-6957 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic motor adapted for

Name: 438-1293u3001244-8479u3001272-6957 CAT medium-sized excavator (20-36 tons) plunger pump hydraulic motor adapted for
Brand: Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.

Price Negotiable

Price: Negotiable

MOQ: 1

Delivery Time: 2 weeks

Product Description

CAT Medium-Sized Excavator Hydraulic Pump Components

Part Numbers: 438-1293, 244-8479, 272-6957 - Compatible with CAT medium-sized excavators (20-36 tons)

Product Specifications

Pump Type	OEM Part Number	Applicable Equipment Model	Displacement (cc/r)
Axial Piston Pump	487-6207	301.5/301.6/301.7CR	12.5
Axial Piston Pump	423-0097	305.5E/306E/307E	65
Axial Piston Pump	272-6959	325D/329D/DL	145
Axial Piston Pump	369-9655	374F/390F	280
Axial Piston Pump	307-3063	415F/416F/422F	112
Gear Pump (Pilot)	560-0886	Full Range Excavators	8.2
Axial Piston Pump	295-9426	349 Series	160
Gear Pump (Auxiliary)	175-6253	Loaders/Backhoes	10.5

Component Details

CAT hydraulic pump component showing part numbers and specifications

Main Pump: 487-6207

Compatible Part Numbers: CA4876207, 566-7021, 241-7972, 163-9762, 241-9299

Adaptation: 301.5/301.6/301.7CR/301.8/302CR/302.5C/303.5, etc.

Pilot/Gear Pump

Part Numbers: 560-0886, 211-6626

Equipment Compatibility by Size Category

Small Excavator (3-10 tons)

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

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

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

Medium Sized Excavator (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

Adaptation: 320D/D2/323D2/326GC/329D/330D/336D/D2XE, etc.

Rotary Pumps: 204-4916, 204-4922

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

Frequently Asked Questions

Q1: What is the role of a charge pump in Cat variable-displacement pumps?

The charge pump supplies low-pressure oil to lubricate internal pump components and maintain control chamber pressure for displacement adjustment.

Q2: How to test a Cat hydraulic pump for internal leaks?

Perform a pressure holding test: close the outlet valve, maintain pressure for 5 minutes, and check if the pressure drops beyond the allowable range (leaks indicate internal wear).

Q3: What is the application of Cat pump part number 550-4341?

550-4341 is a main pump suitable for mid-to-large excavators like 336GC/340/345GC.

Q4: Can using the wrong hydraulic oil viscosity damage the pump?

Yes—oil with too high viscosity increases startup load and friction, while too low viscosity reduces lubrication and causes internal wear.

Q5: What is the warranty period for a new Cat OEM hydraulic pump?

The standard warranty period for new Cat OEM pumps is 12 months or 2,000 operating hours, whichever comes first, when installed by an authorized dealer.

Q6: How to dispose of a damaged Cat hydraulic pump?

Contact an authorized Cat service provider or a qualified waste disposal company to ensure compliance with local environmental regulations for hydraulic component disposal.

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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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