416C 426C 428C 436C Backhoe Loader Hydraulic Piston Pump 155-5109 1555109
1.Basic Info
Product Name: Main Hydraulic Piston Pump
OEM Part Number: 155‑5109, 1555109
Fit Machine: 416C, 426C, 428C, 436C Backhoe Loader
Product Type: Variable displacement axial piston pump
Condition: Aftermarket new construction machinery spare part
| Pos. | Part No | Qty | Parts name |
|---|---|---|---|
| 1 | 6E‑3343 | 1 | RING |
| 2 | 6E‑4003 | 2 | BEARING |
| 3 | 135‑6614 | 1 | HOUSING‑PUMP |
| 4 | 120‑5726 Y | 1 | ROTATING GP‑PUMP |
| 5 | 3E‑6769 | 4 | SEAL‑O‑RING |
| 6 | 095‑9805 M | 4 | BOLT‑SOCKET HEAD (M14X2X40‑MM) |
| 7 | 1P‑6872 | 1 | CUP‑BEARING |
| 8 | 8C‑7110 | 1 | CONE‑BEARING |
| 9 | 105‑2146 | 2 | PLUG |
| 10 | 6E‑4000 B | 1 | SPACER (25.5X35X3‑MM THK)(3MM THK) |
| 11 | 3E‑6770 | 1 | SEAL‑O‑RING |
| 12 | 120‑5732 | 1 | GUIDE‑PLUNGER |
| 13 | 6E‑6176 | 1 | SPRING |
| 14 | 120‑5730 | 1 | PLUNGER |
| 15 | 9S‑8006 | 1 | PLUG (7/8‑14‑THD) |
| 16 | 2M‑9780 | 1 | SEAL‑O‑RING |
| 17 | 162‑1604 | 1 | SHAFT‑DRIVE |
| 18 | 6V‑2323 | 1 | CONE‑BEARING |
| 19 | 3B‑5790 | 1 | CUP‑BEARING |
| 20 | 6E‑4004 | 2 | SEAL‑SHAFT |
| 21 | 121‑3042 | 1 | SWASHPLATE AS |
| 22 | 120‑5727 | 1 | PISTON‑CONTROL |
| 23 | 120‑5729 | 1 | GUIDE‑PISTON |
| 24 | 136‑8423 | 1 | PLUG‑BREAK OFF |
| 25 | 083‑4419 | 1 | PIN |
| 26 | 120‑5723 | 1 | PLUG‑BREAK OFF |
| 27 | 120‑5722 | 1 | HEAD‑PUMP |
| 28 | 103‑5522 | 1 | ADAPTER AS |
| 3J‑7354 | 1 | SEAL‑O‑RING | |
| 29 | 030‑7946 | 2 | ELBOW |
| 30 | 3J‑7354 | 4 | SEAL‑O‑RING |
| 31 | 135‑6615 | 1 | TUBE AS |
| 32 | 162‑1605 | 1 | VALVE GP‑PUMP CONTROL (POWER COMPENSATOR) |
| 33 | 8T‑8442 M | 7 | BOLT‑SOCKET HEAD (M6X1X30‑MM) |
| 34 | 107‑3116 | 1 | SEAL‑O‑RING |
| 35 | 155‑5112 | 1 | SPRING |
| 36 | 155‑5113 | 1 | ACTUATOR GP‑PUMP |
| 37 | 135‑6616 Y | 1 | VALVE GP‑PUMP CONTROL (PRESSURE, FLOW COMPENSATOR) |
| 38 | 9X‑7680 | 3 | SEAL‑O‑RING |
| 39 | 9S‑8002 | 1 | PLUG (7/16‑20‑THD) |
2.Core Advantages
‑Load‑sensing variable displacement structure, matches the original closed‑center hydraulic system perfectly
‑High‑strength cylinder block, piston shoes and swash‑plate components, anti‑wear under heavy‑duty loader‑backhoe cyclic loads
‑Precise flow regulation, effectively improves boom, bucket and swing action responsiveness
‑Optimized internal sealing group, reduces internal leakage and heat generation during long‑hour continuous work
‑100% pressure‑tested before shipment, direct bolt‑on installation without extra modification
3.Technical Data
Pump Type: Axial variable‑displacement piston pump
Oem No.: 155‑5109
Max Displacement: 80 ml/r
Rated System Pressure: 25 MPa
Maximum Working Pressure: 28 MPa
Rated Input Speed: 2200 rpm
Max Continuous Flow: 160 L/min
Control Mode: Load‑sensing pressure compensator
Shaft: Splined drive shaft
Main Oil Port: 1‑1/4 inch flange connection
Case Drain Port: G1/2
Mounting: SAE standard 4‑bolt flange
Net Weight: 48 KG
Application Equipment: 7‑9 Ton Backhoe Loader
4.FAQ
Q1: Does this pump replace original 155‑5109 directly?
A1: Yes, it shares the same mounting dimensions and oil‑port layout for direct replacement.
Q2: Can it work on other C‑series backhoe loader models?
A2: It is specially designed for 416C, 426C, 428C, 436C. Verify part number before fitting other machines.
Q3: What warranty is provided for this hydraulic pump?
A3: 12‑month warranty against manufacturing defects.
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