- Length
- 3,650 mm
- Specification
- DN6;1SN-04;22.5MPa
- Left fitting
- 美制内螺纹74°内锥
- Right fitting
- 美制内螺纹74°内锥
Individual hose record
4257291 Hose Repair Specifications
Excavator · Hitachi · EX370-5 · Grease Lines
Finished length3,600 mm
Locate this hose
Installation diagram — Pipe No. 12
Locate Pipe No. 12 in the diagram, then confirm part number 4257291 before removing the hose.

Repair specifications
- Part number
- 4257291
- Diagram pipe number
- 12
- Installation route
- Left boom-cylinder grease lineOriginal Chinese: 左大臂油缸黄油管
- Hose specification
- DN6;1SN-04;22.5MPa
- Finished length
- 3,600 mm
- Working pressure
- 22.5 MPa
- Left fitting
- 美制内螺纹74°内锥
- Right fitting
- 美制内螺纹74°内锥
- Quantity
- 1
Same system
Related Hoses
- Length
- 6,660 mm
- Specification
- DN5;2层纤维-3;14MPa
- Left fitting
- 美制内螺纹37°内锥
- Right fitting
- 公制卡套式
Diagram Pipe No. 2
4407364
Installation route: Right boom-cylinder grease lineOriginal Chinese: 右大臂油缸黄油管
- Length
- 3,400 mm
- Specification
- DN5;2层纤维-3;14MPa
- Left fitting
- 美制内螺纹37°内锥
- Right fitting
- 公制卡套式
- Length
- 3,000 mm
- Specification
- DN6;1SN-4;10.5MPa
- Left fitting
- 美制内螺纹37°内锥
- Right fitting
- 公制卡套式
Diagram Pipe No. 11
4289772
Installation route: Right boom-cylinder grease lineOriginal Chinese: 右大臂油缸黄油管
- Length
- 3,600 mm
- Specification
- DN6;1SN-04;22.5MPa
- Left fitting
- 美制内螺纹74°内锥
- Right fitting
- 美制内螺纹74°内锥
- Length
- 3,560 mm
- Specification
- DN5;2层纤维-3;14MPa
- Left fitting
- 美制内螺纹37°内锥
- Right fitting
- 公制卡套式
