- Length
- 3,500 mm
- Specification
- DN19;1SN-12;8.7Mpa
- Left fitting
- American female thread, flat-face sealOriginal Chinese: 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
Hydraulic line repair data
Caterpillar CAT®312B L Attachments – Lock Valve Hose List
Coverage details
- Hoses
- 13 records
- Full specifications
- 13 records
- Systems
- 1 systems
- Length range
- 479–4,400 mm
Current system
Find a hose in this system
Use the number on the diagram, a part number, connection point, length, hose size, or fitting.
Hose repair details
Hose Length and Fitting List
- Length
- 4,400 mm
- Specification
- DN10;1SN-6;15.7Mpa
- Left fitting
- American female thread, flat-face sealOriginal Chinese: 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
- 1,665 mm
- Specification
- DN10;1SN-6;15.7Mpa
- Left fitting
- American female thread, flat-face sealOriginal Chinese: 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
- 3,200 mm
- Specification
- DN19;1SN-12;8.7Mpa
- Left fitting
- American female thread, flat-face sealOriginal Chinese: 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
- 765 mm
- Specification
- DN10;1SN-6;15.7Mpa
- Left fitting
- 美制内螺纹37°锥
- Right fitting
- 美制内螺纹37°锥
- Length
- 2,100 mm
- Specification
- DN10;1SN-6;15.7Mpa
- Left fitting
- American female thread, flat-face sealOriginal Chinese: 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
- 620 mm
- Specification
- DN10;1SN-6;15.7Mpa
- Left fitting
- 美制内螺纹37°锥
- Right fitting
- 美制内螺纹37°锥
- Length
- 2,200 mm
- Specification
- DN10;1SN-6;15.7Mpa
- Left fitting
- 美制内螺纹37°锥
- Right fitting
- 美制内螺纹37°锥
- Length
- 2,110 mm
- Specification
- DN10;2SN-6;33Mpa
- Left fitting
- American female thread, flat-face sealOriginal Chinese: 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
- 722 mm
- Specification
- DN16;1SN-10;10.5Mpa
- Left fitting
- American female thread, flat-face sealOriginal Chinese: 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
- 479 mm
- Specification
- DN25;1SN-16;7Mpa
- Left fitting
- American female thread, flat-face sealOriginal Chinese: 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
- 910 mm
- Specification
- DN10;1SN-6;15.7Mpa
- Left fitting
- 美制内螺纹37°锥
- Right fitting
- 美制内螺纹37°锥
- Length
- 620 mm
- Specification
- DN10;1SN-6;15.7Mpa
- Left fitting
- 美制内螺纹37°锥
- Right fitting
- 美制内螺纹37°锥
Diagram Pipe No. 21
165-4381
Installation route: Left boom-cylinder lock valve → right boom-cylinder lock valveOriginal Chinese: 左大臂油缸锁止阀~右大臂油缸锁止阀
- Length
- 700 mm
- Specification
- DN10;1SN-6;15.7Mpa
- Left fitting
- 90°美制内螺纹37°锥
- Right fitting
- 90°美制内螺纹37°锥
- Length
- 458 mm
- Specification
- DN16;1SN-10;10.5Mpa
- 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
- 1,050 mm
- Specification
- DN10;1SN-6;15.7Mpa
- Left fitting
- 美制内螺纹37°锥
- Right fitting
- 45°美制内螺纹37°锥
Diagram Pipe No. 10
6W-2403
Installation route: Left boom-cylinder lock valve → right boom-cylinder lock valveOriginal Chinese: 左大臂油缸锁止阀~右大臂油缸锁止阀
- Length
- 540 mm
- Specification
- DN10;1SN-6;15.7Mpa
- Left fitting
- 美制内螺纹37°锥
- Right fitting
- 45°美制内螺纹37°锥
- Length
- 2,080 mm
- Specification
- DN10;1SN-6;15.7Mpa
- Left fitting
- 美制内螺纹37°锥
- Right fitting
- 45°美制内螺纹37°锥
No hose in this list matches those words. Clear the box or search another machine.
Based on current published data
Common Repair Questions
Questions appear only when a published record or linked PDF page provides the answer.
How many hoses are currently listed for Caterpillar CAT®312B L Attachments – Lock Valve?
What is the hose length range for Caterpillar CAT®312B L Attachments – Lock Valve?
Which hose specifications are common for Caterpillar CAT®312B L Attachments – Lock Valve?
The most frequent raw specifications in the current published records are: DN10;1SN-6;15.7Mpa (8 records), DN19;1SN-12;8.7Mpa (2 records), DN10;2SN-6;33Mpa (1 records), DN16;1SN-10;10.5Mpa (1 records), DN25;1SN-16;7Mpa (1 records). Verify the specification together with length, pressure, and fitting details.
How can I identify the left and right hose fittings for Caterpillar CAT®312B L Attachments – Lock Valve?
Each record keeps the left and right fitting descriptions separate. Current examples: 137-4679: left American female thread, flat-face seal; right American female thread, flat-face seal; 148-3404: left American female thread, flat-face seal; right American female thread, flat-face seal; 199-5955: left American female thread, flat-face seal; right American female thread, flat-face seal. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.
Can I locate a Caterpillar CAT®312B L Attachments – Lock Valve hose by diagram pipe number?
Yes. Current examples with a diagram pipe number are: Pipe No. 1 (137-4679), Pipe No. 3 (148-3404), Pipe No. 8 (199-5955), Pipe No. 3 (137-4680). Open a record to compare its installation position with the linked manual page.