Individual hose record

4I-3991 Hose Repair Specifications

Excavator · Caterpillar · CAT®312E L · Pedal

Finished length2,100 mm

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Installation diagram — Pipe No. 1

Locate Pipe No. 1 in the diagram, then confirm part number 4I-3991 before removing the hose.

Caterpillar CAT®312E L installation diagram showing hydraulic hose 4I-3991 at Pipe No. 1
Caterpillar CAT®312E LPart 4I-3991 · Pipe No. 1Open full-size diagram

Repair specifications

Part number
4I-3991
Diagram pipe number
1
Installation route
中转接头(踏板)~分配阀上
Hose specification
DN10;-6;10.3Mpa
Finished length
2,100 mm
Working pressure
10.3 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

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Length
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Specification
DN10;-6;10.3Mpa
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
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Diagram Pipe No. 13

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Specification
DN10;-6;10.3Mpa
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
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Diagram Pipe No. 12

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Installation route: 行走踏板~分配阀上

Length
2,350 mm
Specification
DN10;-6;10.3Mpa
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
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Diagram Pipe No. 7

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Installation route: 中转接头(踏板)~分配阀上

Length
2,200 mm
Specification
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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
View full repair specifications

For reference only. Confirm the actual hose before fabrication.

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