Individual hose record

4I-3981 Hose Repair Specifications

Excavator · Caterpillar · CAT®312B L · Attachments – Quick Coupler

Finished length2,750 mm

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Installation diagram — Pipe No. 10

Locate Pipe No. 10 in the diagram, then confirm part number 4I-3981 before removing the hose.

Part number: 4I-3981
Diagram pipe number: 10
Installation route: 快速联轴阀~蓄能器电磁阀(液压油箱后)
Hose specification: DN10;1SN-6;10.4Mpa
Finished length: 2,750 mm
Working pressure: 10.4 MPa
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
Quantity: 1

Same system

Diagram Pipe No. 1

Installation route: 快速联轴阀~分配阀左

Length: 1,800 mm
Specification: DN10;4SP-6;28Mpa
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

Diagram Pipe No. 11

Installation route: 大臂后段(快换)~大臂前段(快换)

Length: 1,280 mm
Specification: DN6;2SN-4;40Mpa
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

Diagram Pipe No. 17

Installation route: 快速联轴阀~回转马达

Length: 1,000 mm
Specification: DN10;4SP-6;28Mpa
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

Diagram Pipe No. 10

Installation route: 大臂后段快换管

Length: 1,960 mm
Specification: DN6;2SN-4;40Mpa
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

Diagram Pipe No. 16

Installation route: 快速联轴阀~液压泵

Length: 2,035 mm
Specification: DN10;4SP-6;28Mpa
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

Diagram Pipe No. 30

Installation route: 快速联轴阀~液压泵上

Length: 2,815 mm
Specification: DN10;4SP-6;28Mpa
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

For reference only. Confirm the actual hose before fabrication.