Hydraulic line repair data

Hitachi ZX85USB-3 Boom Assembly Hose List

Hitachi ZX85USB-3 Boom Assembly currently has 6 published hose records for checking length, hose specification, left and right fittings, part number, and diagram pipe number.

Hoses: 6 records
Full specifications: 6 records
Systems: 1 systems
Length range: 650–790 mm

Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 12

4388835

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

Length: 750 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. 22

4262819

Installation route: 大臂摆动油缸

Length: 790 mm
Specification: DN6;2层纤维-4;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 45°美制内螺纹37°内锥

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Diagram Pipe No. 29

4285799

Installation route: 小臂油缸

Length: 750 mm
Specification: DN12;4SP-08;34.5Mpa
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

4324461

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

Length: 650 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. 29

4285799

Installation route: 分节大臂油缸

Length: 750 mm
Specification: DN12;4SP-08;34.5Mpa
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. 30

4689856

Installation route: 分节大臂油缸

Length: 780 mm
Specification: DN12;4SP-8;34.5Mpa
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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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 ZX85USB-3 Boom Assembly?

There are 6 published records. 6 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Hitachi ZX85USB-3 Boom Assembly?

Based on published records with valid lengths, the range is 650–790 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi ZX85USB-3 Boom Assembly?

The most frequent raw specifications in the current published records are: DN12;4SP-08;34.5Mpa (2 records), DN12;4SP-8;27.5MPa (1 records), DN12;4SP-8;34.5Mpa (1 records), DN13;4SP-08;41.5MPa (1 records), DN6;2层纤维-4;14MPa (1 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi ZX85USB-3 Boom Assembly?

Each record keeps the left and right fitting descriptions separate. Current examples: 4388835: left American female thread, flat-face seal; right American female thread, flat-face seal; 4262819: left 美制内螺纹37°内锥; right 45°美制内螺纹37°内锥; 4285799: 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 ZX85USB-3 Boom Assembly hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 12 (4388835), Pipe No. 22 (4262819), Pipe No. 29 (4285799), Pipe No. 22 (4324461). Open a record to compare its installation position with the linked manual page.