- Length
- 1,300 mm
- Specification
- DN10;1SN-6;10.4Mpa
- Left fitting
- American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
- Right fitting
- 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封
Individual hose record
4I-1878 Hose Repair Specifications
Excavator · Caterpillar · CAT®312E L · Attachments
Finished length1,380 mm
Repair specifications
- Part number
- 4I-1878
- Diagram pipe number
- 3
- Installation route
- 右踏板~进回油阀
- Hose specification
- DN10;1SN-6;10.4Mpa
- Finished length
- 1,380 mm
- Working pressure
- 10.4 MPa
- Left fitting
- 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封
- Right fitting
- American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
- Quantity
- 1
Same system
Related Hoses
- Length
- 370 mm
- Specification
- DN10;1SN-6;10.4Mpa
- Left fitting
- 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封
- Right fitting
- American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
- Length
- 420 mm
- Specification
- DN13;4SP-8;28Mpa
- Left fitting
- 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封
- Right fitting
- American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
- Length
- 410 mm
- Specification
- DN13;4SP-8;28Mpa
- Left fitting
- 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封
- Right fitting
- American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
- Length
- 300 mm
- Specification
- DN10;-6;10.3Mpa
- Left fitting
- 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封
- Right fitting
- American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
- Length
- 1,440 mm
- Specification
- DN10;-6;10.3Mpa
- Left fitting
- 45°美制内螺纹平面密封
- Right fitting
- American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
- Length
- 900 mm
- Specification
- DN13;4SP-8;28Mpa
- Left fitting
- 45°美制内螺纹平面密封
- Right fitting
- American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
- Length
- 760 mm
- Specification
- DN16;4SP-10;28Mpa
- Left fitting
- 45°美制内螺纹平面密封
- Right fitting
- American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Workshop guide
Finding the correct hydraulic hose for Caterpillar CAT®312E L Attachments
Start with the machine and route
For Caterpillar CAT®312E L Attachments, identify the exact model and hydraulic system on the machine first. A part number or diagram pipe number is the fastest way to narrow a replacement hose; if neither is visible, compare the installation route and the existing hose.
Read the dimensions before cutting
Check whether a listed dimension is finished assembly length, hose-only length, or cut length. These are not interchangeable. Confirm hose specification and pressure rating, then compare both ends separately: thread, sealing seat, size, angle, and orientation.
Records to compare
- 4I-18781,380 mm · DN10;1SN-6;10.4Mpa · 右踏板~进回油阀
Use the drawing as a location check
Where an installation drawing or manual figure is available, match its callout to the part number and physical route. A hydraulic circuit diagram explains connections but does not show the exact routing of a hose on the machine. Take the old hose or clear end-fitting photographs to the workshop if any dimension is missing.
For reference only. Confirm the actual hose before fabrication.