Individual hose record

4257238 Hose Repair Specifications

Excavator · Hitachi · EX220LC-3 · Swivel Joint

Finished length2,300 mm

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Installation diagram — Pipe No. 21

Locate Pipe No. 21 in the diagram, then confirm part number 4257238 before removing the hose.

Hitachi EX220LC-3 installation diagram showing hydraulic hose 4257238 at Pipe No. 21 — **Hitachi EX220LC-3**Part 4257238 · Pipe No. 21Open full-size diagram

Repair specifications

Part number: 4257238
Diagram pipe number: 21
Installation route: Swivel joint → travel motorOriginal Chinese: 回转接头~行走马达
Hose specification: DN6;1SN-4;7Mpa
Finished length: 2,300 mm
Working pressure: 7 MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥
Quantity: 2

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Installation route: Swivel joint → travel motorOriginal Chinese: 回转接头~行走马达

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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

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Diagram Pipe No. 70A

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Diagram Pipe No. 0

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Installation route: Swivel joint → travel motorOriginal Chinese: 回转接头~行走马达

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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

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Diagram Pipe No. 21

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Installation route: Swivel joint → travel motorOriginal Chinese: 回转接头~行走马达

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Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 1

4258301

Installation route: Swivel joint → travel motorOriginal Chinese: 回转接头~行走马达

Length: 2,300 mm
Specification: DN19;4SP-12;38Mpa
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

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Diagram Pipe No. 14

4266183

Installation route: Swivel joint → travel motorOriginal Chinese: 回转接头~行走马达

Length: 2,400 mm
Specification: DN12;4层纤维层-8;3MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 14

4262932

Installation route: Swivel joint → travel motorOriginal Chinese: 回转接头~行走马达

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Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 0

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Installation route: Swivel joint → travel motorOriginal Chinese: 回转接头~行走马达

Length: 2,150 mm
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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

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