339-0513, 123-2233, 126-2073 Excavator Hydraulic Pump (20-36 Tons)
Axial piston pump and hydraulic motor adapted for 320D/D2, 323D2, 326GC, 329D, 330D, 336D/D2XE excavators and compatible models.
Product Specifiions
| Pump Type |
OEM Part Number |
Applicable Equipment Model |
Displacement (cc/r) |
Rated Pressure (MPa) |
Rotation Direction |
Mounting Standard |
| Axial Piston Pump |
487-6207 |
301.5/301.6/301.7CR |
12.5 |
28 |
Clockwise |
SAE A |
| Axial Piston Pump |
423-0097 |
305.5E/306E/307E |
65 |
32 |
Clockwise |
SAE B |
| Axial Piston Pump |
272-6959 |
325D/329D/DL |
145 |
35 |
Clockwise |
SAE C |
| Axial Piston Pump |
369-9655 |
374F/390F |
280 |
38 |
Clockwise |
SAE D |
| Axial Piston Pump |
307-3063 |
415F/416F/422F |
112 |
31 |
Clockwise |
SAE B |
| Gear Pump (Pilot) |
560-0886 |
Full Range Excavators |
8.2 |
21 |
Clockwise |
SAE A |
| Axial Piston Pump |
295-9426 |
349 Series |
160 |
36 |
Clockwise |
SAE C |
Compatible Pump Configurations by Equipment Class
Small Excavators (3-10 Tons)
- Main Pumps: 423-0097, 397-3941, 214-1091, 4I-1023, 348-7627, 7Y-4002, 247-7867, 358-5004
- Compatible Models: 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
- Compatible Models: 320D/D2, 323D2, 326GC, 329D, 330D, 336D/D2XE, etc.
- 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
- Compatible Models: 336GC, 340, 345, 349, 374F, 385, 390F, 395GC, etc.
- Pilot/Gear Pumps: 564-9801, 234-4638
Loader & Backhoe Appliions
- Main Pumps: 307-3063 CA3073063, 20R-6569, 161-6634, 235-4110, 100-3259, 121-7385
- Compatible Models: 415F, 416C/D/E/F, 422F, 426F, 428D/F with C3.4/C4.4 engines
- Pilot/Gear Pumps: 175-6253, 397-6960
Bulldozer Appliions
- Main Pumps: 9T-8647, 9T-8346, 100-6239/OR-7677, 9J-5068, 9T-8647, 6E-5072
- Compatible Models: D7R/H, D8N/R, D9R, 140G, etc.
- Gear Pumps: 9T-1318, 104-1752
Frequently Asked Questions
Are hydraulic pumps compatible with biodegradable hydraulic oil?
Yes, but only if the oil meets 's specifiions and is compatible with the pump's seal materials; consult a dealer for recommendations.
What is the pilot pressure range for excavator hydraulic systems?
The typical pilot pressure range is 3-5 MPa, providing stable control signal pressure for the operation valves.
How to disassemble a axial piston pump?
Follow the official disassembly manual, use specialized tools, mark component positions during disassembly, and clean all parts thoroughly to avoid contamination.
What is the part number for the main pump of 349 series?
The main pump part number for 349 series is 295-9426, a high-pressure axial piston pump.
Can a damaged hydraulic pump shaft be repaired?
Minor shaft wear can be repaired via plating or grinding, but severe damage (e.g., bending, cracking) requires shaft replacement or pump remanufacturing.
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.