Hydraulic line repair data

Hitachi ZX75US-3 Boom Assembly Hose List

Coverage details

Hoses: 2 records
Full specifications: 2 records
Systems: 1 systems
Length range: 1,000–1,120 mm

Current system

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 14

4452858

Installation route: Arm cylinder — leftOriginal Chinese: 小臂油缸左

Length: 1,120 mm
Specification: DN12;2SN-8;27.5MPa
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

4452857

Installation route: Arm cylinder — rightOriginal Chinese: 小臂油缸右

Length: 1,000 mm
Specification: DN12;2SN-8;27.5MPa
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. 6

4392171

Installation route: 偏置大臂油缸

Length: 820 mm
Specification: DN10;2SN-6;27.5MPa
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. 21

4415186

Installation route: 小臂油缸

Length: 2,350 mm
Specification: DN12;4SP-8;27.5MPa
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. 17

4377483

Installation route: Bucket cylinderOriginal Chinese: 铲斗油缸

Length: 820 mm
Specification: DN12;4SP-8;27.5MPa
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. 13A

4689067

Installation route: Arm cylinder — leftOriginal Chinese: 小臂油缸左

Length: 950 mm
Specification: DN12;4SP-8;27.5MPa
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

9296636

Installation route: Arm cylinder — leftOriginal Chinese: 小臂油缸左

Length: 950 mm
Specification: DN12;4SP-8;27.5MPa
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

4415185

Installation route: 小臂油缸

Length: 2,300 mm
Specification: DN12;4SP-8;27.5MPa
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. 22

4451812

Installation route: Bucket cylinderOriginal Chinese: 铲斗油缸

Length: 2,050 mm
Specification: DN12;4SP-8;27.5MPa
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. 5

4470329

Installation route: 大臂左4

Length: 1,850 mm
Specification: DN12;2SN-8;27.5MPa
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. 25

4464138

Installation route: Bucket cylinderOriginal Chinese: 铲斗油缸

Length: 900 mm
Specification: DN13;4SP-08;41.5MPa
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. 4

4470330

Installation route: 大臂左3

Length: 2,050 mm
Specification: DN12;2SN-8;27.5MPa
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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Based on current published data

Common Repair Questions

Questions appear only when a published record or linked PDF page provides the answer.

How many hoses are currently listed for Hitachi ZX75US-3 Boom Assembly?

There are 2 published records. 2 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Hitachi ZX75US-3 Boom Assembly?

Based on published records with valid lengths, the range is 1,000–1,120 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi ZX75US-3 Boom Assembly?

The most frequent raw specifications in the current published records are: DN12;2SN-8;27.5MPa (2 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi ZX75US-3 Boom Assembly?

Each record keeps the left and right fitting descriptions separate. Current examples: 4452858: left American female thread, flat-face seal; right American female thread, flat-face seal; 4452857: left American female thread, flat-face seal; right American female thread, flat-face seal. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Hitachi ZX75US-3 Boom Assembly hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 14 (4452858), Pipe No. 13 (4452857). Open a record to compare its installation position with the linked manual page.