Hydraulic line repair data

Hitachi EX270LC-5 Boom Assembly Hose List

Hitachi EX270LC-5 Boom Assembly currently has 5 published hose records for checking length, hose specification, left and right fittings, part number, and diagram pipe number.

Hoses: 5 records
Full specifications: 5 records
Systems: 1 systems
Length range: 810–1,300 mm

Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 15

4272697

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

Length: 900 mm
Specification: DN25;4SH-16;38.8MPa
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. 23

4388137

Installation route: Boom cylinder — left 2 / left 3Original Chinese: 大臂油缸左2/左3

Length: 810 mm
Specification: DN19;4SH-12;42MPa
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. 20

4265833

Installation route: 铲斗油缸(后段)

Length: 1,300 mm
Specification: DN19;4SP-12;31Mpa
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

4388131

Installation route: 大臂油缸左1/左4

Length: 810 mm
Specification: DN25;4SH-16;38.8MPa
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. 25

4249334

Installation route: 铲斗油缸(前段)

Length: 850 mm
Specification: DN19;4SH-12;42MPa
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 EX270LC-5 Boom Assembly?

There are 5 published records. 5 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Hitachi EX270LC-5 Boom Assembly?

Based on published records with valid lengths, the range is 810–1,300 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi EX270LC-5 Boom Assembly?

The most frequent raw specifications in the current published records are: DN19;4SH-12;42MPa (2 records), DN25;4SH-16;38.8MPa (2 records), DN19;4SP-12;31Mpa (1 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi EX270LC-5 Boom Assembly?

Each record keeps the left and right fitting descriptions separate. Current examples: 4272697: left American female thread, flat-face seal; right American female thread, flat-face seal; 4388137: left American female thread, flat-face seal; right American female thread, flat-face seal; 4265833: 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 EX270LC-5 Boom Assembly hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 15 (4272697), Pipe No. 23 (4388137), Pipe No. 20 (4265833), Pipe No. 22 (4388131). Open a record to compare its installation position with the linked manual page.