| Hydraulic Filter 126-1817 1261817 9T-0973 3I0687 3I1878 Parameter: | |
| Part Number | 126-1817 1261817 9T-0973 3I0687 3I1878 |
| Brand | Tamfiney |
| Weight | 2950 g |
| Height | 295 mm |
| Outer Diameter | 121 mm |
| Inner Diameter/ Thread Size | 1 3/4-12 UN |
| Material | Metal/Aluminum & Glass fiber |
| Filter Media | Glass fiber with mesh blend |
| Casing | Painted steel outer body with perforated steel internal support |
| Typical Working Pressure | Up to approx. 6–10 bar |
| Filtration | Approx. 5–10 micron |
| Temperature Rating | Up to approx. 100–120°C |
| Minimum Order | 100 PCS |
| Place of Region: | Zhejiang, China |
| Payment Terms: | T/T |
| Price Terms: | FOB |
| Lead Time: | 30 to 50 days based on order quantities |
| Market Type: | After Market |
| Current Export Market: | Southeast Asian,North America, South America, Western Europe, Eastern Europe, Africa, Oceania |
Applications:
Caterpillar:
- Backhoe Loaders (BHL): 414E, 416 (C/D/E), 420 (D/E), 424D, 428 (C/D/E), 430D/E, 432D/E, 434E, 438C/D, 442D/E, 444E, 446B/D, 450E.
- Compactors & Wheel Dozers: 836G, 836H, 836K.
- Telehandlers: TL642D, TL943D, TL1055D, TL1255D.
- Loaders & Tractors: Select track-type tractors, wheel loaders (e.g., 924K, 988G, 992G), and track loaders.
- Engines: Cat truck and industrial engine packages, including the C9, C13, and C15 series.
Professional CAT 126-1817 1261817 9T-0973 3I0687 3I1878 Hydraulic Filter
Q: What are the types of Cat hydraulic filters?
Caterpillar hydraulic filters are primarily categorized by installation location and function into return oil filters, suction oil filters, housing drain filters, and high-pressure pipeline filters.
🔧 Common Types
- Hydraulic return oil filter: Installed in the return oil line of the hydraulic system to filter the oil returning to the tank. It is the most common type of Caterpillar hydraulic filter on the market, with models like 398-7171 and 216-6676 falling into this category.
- Hydraulic suction filter: Installed at the suction port of the hydraulic pump to protect the pump from damage by large particulate contaminants, such as the 343-4464 and 343-4465 series.
- Spin-on Transmission Filter: Used to discharge oil from hydraulic shells, typical models include 093-7521, suitable for machines such as 320D, 323D, and 336D.
- High-pressure pipeline filter: Installed in the pressure pipeline, it withstands higher working pressure and is used to protect precision hydraulic components.
Material and Performance
- Filter material: mostly glass fiber, also includes metal punched mesh, stainless steel wire cloth, and others.
- Filtering precision: Typically ranges from 1μm to 100μm, with some high-efficiency types reaching 10μm.
- Working pressure: typically 21 bar to 210 bar, depending on the model.
- Structural forms: primarily folding filter elements, with wire-wound and sintered types also available.
Q: How do you change a Cat hydraulic oil filter?
⚠️ Security pre warning
Before operation, it is necessary to ensure that the equipment is completely shut down, the engine is cooled down, and the hydraulic system is fully depressurized to avoid high-pressure oil spraying out or high-temperature oil scalding.
🛠️ Prepare tools and materials
- Corresponding model of Caterpillar original/compliant hydraulic oil filter (such as 1R-0751 and other compatible models)
- Special filter wrench, oil container, clean cloth
- New O-ring seal, a small amount of clean hydraulic oil
- Gloves, goggles and other protective equipment
📋 Standard replacement steps
- Shutdown pressure relief: Stop the equipment on a flat surface, return all operating handles to the center position, let it stand for 30 minutes, and then open the hydraulic oil tank vent valve to completely release the internal pressure of the system.
- Cleaning the surroundings: Thoroughly wipe the filter mounting seat and surrounding area to prevent external dust and impurities from entering the hydraulic system.
- Dismantling old filter element: Use a filter element wrench to unscrew the old filter counterclockwise, and transfer all residual old oil inside to the oil receiving container to avoid polluting the environment.
- Inspection and Cleaning: Check the surface of the old filter element for any abnormal impurities such as metal debris and copper powder. If so, troubleshoot hydraulic component wear and tear; Thoroughly clean the contact surface of the installation seat and remove any residue from the old sealing ring.
- Install new filter element: Confirm that the model of the new filter element matches the equipment completely. Apply a thin layer of clean hydraulic oil on the surface of the new O-ring. Use your hand to tighten the new filter element clockwise until the sealing ring fits the installation seat, and then tighten it with a wrench to the specified torque (about 25N · m).
- Exhaust and test run: Start the engine and idle for 5 minutes, repeatedly operate each hydraulic action handle to exhaust the air in the system, check that there is no leakage in the filter installation position, and confirm that the hydraulic oil tank level is within the standard range.
