Product Descriptio
| Pos. | Part No | Qty | Parts name |
| 1 | 8T-4131 M | [4] | NUT (M20X2.5-THD) |
| 2 | 551-1107 | [2] | SETSCREW |
| 3 | 549-4309 | [2] | COVER |
| 4 | 7I-8171 | [2] | RING-BACKUP |
| 5 | 095-1522 | [2] | SEAL-O-RING |
| 6 | 549-4310 | [2] | STOPPER |
| 7 | 549-4327 | [2] | PISTON AS |
| 8 | 549-4308 | [2] | SEAL-O-RING |
| 9 | 242-6919 M | [2] | SETSCREW (M20X2.5X56-MM) |
| 10 | 551-1108 | [2] | BOLT-EYE |
| 11 | 347-6530 | [8] | SEAL-RECTANGULAR |
| 12 | 7I-8172 | [2] | RING-BACKUP |
| 13 | 095-1701 | [2] | SEAL-O-RING |
| 14 | 549-4311 | [2] | STOPPER |
| 15 | 549-4331 | [2] | PISTON AS |
| 16 | 549-4317 | [2] | PLATE |
| 17 | 6V-5192 M | [4] | BOLT-SOCKET HEAD (M8X1.25X30-MM) |
| 18 | 551-1111 | [1] | FLANGE |
| 19 | 095-1717 | [2] | SEAL-O-RING |
| 20 | 551-1102 | [1] | BODY AS-REAR |
| 21 | 551-1114 | [1] | SHAFT-REAR |
| 22 | 549-4329 | [2] | SWASHPLATE AS |
| 23 | 551-1110 | [4] | BOLT-SOCKET HEAD |
| 24 | 549-4330 | [1] | BARREL AS |
| 25 | 559-3652 | [14] | SEAL-SQUARE |
| 26 | 095-1715 | [1] | SEAL-O-RING |
| 27 | 551-1113 | [1] | GEAR |
| 28 | 551-1101 | [1] | BLOCK AS |
| 29 | 549-4321 | [2] | BEARING |
| 30 | 549-4306 | [4] | PIN |
| 31 | 551-1117 | [1] | BARREL AS |
| 32 | 360-3695 | [4] | PLUG |
| 33 | 238-5082 | [4] | SEAL-O-RING |
| 34 | 200-3280 | [18] | SPRING |
| 35 | 549-4319 | [2] | BUSHING |
| 36 | 549-4320 | [2] | PLATE |
| 37 | 8T-4241 | [2] | RING-RETAINING |
| 38 | 549-4322 | [2] | BEARING |
| 39 | 551-1103 | [1] | BODY AS-FRONT |
| 40 | 6V-8202 M | [4] | BOLT-SOCKET HEAD (M8X1.25X16-MM) |
| 41 | 551-1112 | [1] | COVER-FRONT |
| 42 | 551-1115 | [1] | SHAFT-FRONT |
| 43 | 551-1109 | [1] | SEAL-LIP TYPE |
| 44 | 247-8719 | [2] | SPACER (50X64X3-MM THK) |
| 45 | 247-8786 | [2] | DOWEL |
| 46 | 549-4316 | [2] | SUPPORT |
| 47 | 371-7201 | [16] | PLUG |
| 48 | 6V-3938 M | [4] | BOLT (M10X1.5X20-MM) |
| 49 | 516-4306 | [1] | COVER |
| 50 | 110-5525 | [1] | PLUG |
| 51 | 382-4825 | [1] | SEAL-O-RING |
| 52 | 184-1836 M | [4] | BOLT (M18X2.5X45-MM) |
| M | METRIC PART |
Maintenance method
1. Replace seals regularly
The service life of seals is generally one and a half to two years, and they must be replaced in time to ensure the tightness of the seal.
2. Avoid impact pressure damaging components
Impact pressure in the hydraulic pressure should be avoided during operation, as impact pressure will damage components. Each pressure valve and each flow valve must be reasonably adjusted strictly in accordance with the design requirements. After adjustment, the adjusting screws must be tightened securely.
3. Always pay attention to the temperature of the hydraulic station
The working temperature of the hydraulic system oil must not exceed 70°C, and should generally be controlled within the range of 35~60°C. If it exceeds the specified range, the cause should be checked and eliminated.
Theory
Axial piston pumps generally consist of main parts such as cylinder block, oil distribution plate, plunger and swash plate. There are multiple plungers in the cylinder, and the plungers are arranged axially, that is, the center line of the plungers is parallel to the axis of the transmission shaft, so it is called an axial piston pump. But it is different from the reciprocating plunger pump, because its plunger not only reciprocates in the pump cylinder, but also the plunger and pump cylinder rotate relative to the swash plate. The plunger contacts the swash plate with a spherical end. There are high and low pressure moon-shaped grooves on the oil distribution plate. They are separated from each other by partition walls to ensure a certain degree of sealing. They are connected to the oil inlet and oil outlet of the pump respectively. There is an inclination angle between the axis of the swash plate and the axis of the cylinder.
BY EXPRESS, AIR, SEA
About Xinfeng Machinery (XF) parts:
Xinfeng Machinery Parts Company was established in 1998. It is a professional team composed of high-quality technical personnel integrating production, maintenance, sales, and service. It is committed to providing customers with high-quality and efficient services. It is headquartered in Guangzhou, China.
We have been engaged in the excavator industry for 25 years. We sell original used parts, rebuilt parts,original new parts, and OEM new parts for many types.We can provide many types for you to choose from. We can provide a quality-trusted full range of hydraulic pumps, travel motors, final drives, main control valves, swing motors, and engines for KOMATSU, CATERPILLAR, HITACHI, JOHN DEERE, VOLVO, CASE JCB, KOBELCO, NEW HOLLAND, SUMITOMO, KATO, BOBCAT, DOOSAN, and HYUNDAI.
We provide a customer satisfaction guarantee on all our products. We have invested in providing only the highest-quality replacement parts to our customers. Develop a more broad business space together based on long-term, friendly, mutually beneficial, and win-win business relations.
FAQ
1. How to quickly and accurately buy products what lneeded?
A: Provide the original parts number to us to check.
2. lfI don't know the part number,what shouldI do?
A: Please send us size and pictures of old products.
3. What is the warranty of the products?
A: The warranty is 6/12 Months based on the specific product.
4. How long is your delivery time?
A: The normal delivery time is 3-5 days for stock sproductsafter getting payment. lf not in stock, we will inform you thetime requlred.
5.. What's your erms of packing?
7. What is your MOQ?
A: Small order and sample order are acceptable
8. Do you have any After-Sales service?
A: Yes!Our
If you encounter any technical problems with the excavator, you can consult us.
