Individual hose record

4437902 Hose Repair Specifications

Excavator · Hitachi · ZX330LC · Control Valve

Finished length1,100 mm

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Installation diagram — Pipe No. 21A

Locate Pipe No. 21A in the diagram, then confirm part number 4437902 before removing the hose.

Hitachi ZX330LC installation diagram showing hydraulic hose 4437902 at Pipe No. 21A
Hitachi ZX330LCPart 4437902 · Pipe No. 21AOpen full-size diagram

Repair specifications

Part number
4437902
Diagram pipe number
21A
Installation route
分配阀左~分配阀左
Hose specification
DN6;1SN-04;22.5MPa
Finished length
1,100 mm
Working pressure
22.5 MPa
Left fitting
美制内螺纹74°内锥
Right fitting
90°美制内螺纹74°内锥
Quantity
1

Same system

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Installation route: 分配阀左~电磁阀(液压泵)

Length
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Specification
DN6;1SN-04;22.5MPa
Left fitting
美制内螺纹74°内锥
Right fitting
90°美制内螺纹74°内锥
View full repair specifications

Diagram Pipe No. 16

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Installation route: 分配阀上右~液压油箱

Length
750 mm
Specification
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Left fitting
美制内螺纹74°内锥
Right fitting
90°美制内螺纹74°内锥
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Diagram Pipe No. 31

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Installation route: 分配阀下~液压油箱

Length
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Specification
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Left fitting
美制内螺纹74°内锥
Right fitting
美制内螺纹74°内锥
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Diagram Pipe No. 35

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Installation route: 分配阀下~液压油箱

Length
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Specification
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Left fitting
美制内螺纹74°内锥
Right fitting
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Diagram Pipe No. 24

9190865

Installation route: 分配阀上~分配阀左

Length
1,100 mm
Specification
DN6;1SN-04;22.5MPa
Left fitting
美制内螺纹74°内锥
Right fitting
90°美制内螺纹74°内锥
View full repair specifications

Diagram Pipe No. 32

4437795

Installation route: 分配阀后~液压油箱

Length
1,350 mm
Specification
DN6;1SN-04;22.5MPa
Left fitting
美制内螺纹74°内锥
Right fitting
90°美制内螺纹74°内锥
View full repair specifications

Diagram Pipe No. 16

4442331

Installation route: 分配阀后~电磁阀

Length
500 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
View full repair specifications

Diagram Pipe No. 15

4465685

Installation route: 分配阀上左~液压油箱

Length
850 mm
Specification
DN6;1SN-04;22.5MPa
Left fitting
美制内螺纹74°内锥
Right fitting
90°美制内螺纹74°内锥
View full repair specifications

For reference only. Confirm the actual hose before fabrication.

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