Component Details
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 egory
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 variable-displacement pumps?
The charge pump supplies low-pressure oil to lubrie internal pump components and maintain control chamber pressure for displacement adjustment.
Q2: How to test a 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 indie internal wear).
Q3: What is the appliion of 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 lubriion and causes internal wear.
Q5: What is the warranty period for a new OEM hydraulic pump?
The standard warranty period for new 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 hydraulic pump?
Contact an authorized service provider or a qualified waste disposal company to ensure compliance with local environmental regulations for hydraulic component disposal.
