Hydraulic line repair data

Hitachi EX300LC-3C Hydraulic Pump Hose List

Coverage details

Hoses: 3 records
Full specifications: 3 records
Systems: 1 systems
Length range: 750–2,100 mm

Current system

Find a hose in this system

Use the number on the diagram, a part number, connection point, length, hose size, or fitting.

Pipe number, part number, route, length, or fittingSearch another machine

Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 30

4197724

Installation route: 液压泵~吸油铁管

Length: 750 mm
Specification: DN19;2SN-12;21.5MPa
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. 65A

4319381

Installation route: 液压泵~分配阀前

Length: 2,100 mm
Specification: DN6;2层纤维-4;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 66A

4319383

Installation route: 液压泵~分配阀后

Length: 1,200 mm
Specification: DN6;2层纤维-4;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 62A

4343350

Installation route: 液压泵~过渡阀块(分配阀)

Length: 3,150 mm
Specification: DN10;1SN-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 17

4319146

Installation route: 液压泵~分配阀(进油)

Length: 1,650 mm
Specification: DN25;4SH-16;34.5Mpa
Left fitting: 45° heavy-series flangeOriginal Chinese: 45°法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 63A

4343349

Installation route: 液压泵~电磁阀

Length: 2,900 mm
Specification: DN6;1SN-4;7Mpa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 68A

4323581

Installation route: 液压泵~分配阀右

Length: 1,180 mm
Specification: DN10;1SN-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 47A

4328981

Installation route: 液压泵~电磁阀(液压泵)

Length: 2,470 mm
Specification: DN6;1SN-4;7Mpa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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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 EX300LC-3C Hydraulic Pump?

There are 3 published records. 3 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Hitachi EX300LC-3C Hydraulic Pump?

Based on published records with valid lengths, the range is 750–2,100 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi EX300LC-3C Hydraulic Pump?

The most frequent raw specifications in the current published records are: DN6;2层纤维-4;14MPa (2 records), DN19;2SN-12;21.5MPa (1 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi EX300LC-3C Hydraulic Pump?

Each record keeps the left and right fitting descriptions separate. Current examples: 4197724: left American female thread, flat-face seal; right American female thread, flat-face seal; 4319381: left 美制内螺纹37°内锥; right 90°美制内螺纹37°内锥; 4319383: left 美制内螺纹37°内锥; right 90°美制内螺纹37°内锥. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Hitachi EX300LC-3C Hydraulic Pump hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 30 (4197724), Pipe No. 65A (4319381), Pipe No. 66A (4319383). Open a record to compare its installation position with the linked manual page.