Hydraulic line repair data

Hitachi ZX450LC Boom Assembly Hose List

Coverage details

Hoses: 3 records
Full specifications: 3 records
Systems: 1 systems
Length range: 900–2,550 mm

Current system

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 102

4259804

Installation route: 大臂左3/左4/左5/左6

Length: 2,550 mm
Specification: DN25;4SP-16;32Mpa
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. 8

4345675

Installation route: 铲斗油缸左

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. 102

4259804

Installation route: 大臂左2

Length: 2,550 mm
Specification: DN25;4SP-16;32Mpa
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

4373396

Installation route: 大臂油缸

Length: 1,100 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. 0

4345280

Installation route: 大臂左4

Length: 1,760 mm
Specification: DN25;4SH-16;38.8MPa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 5

9155746

Installation route: 大臂左2

Length: 1,910 mm
Specification: DN25;4SH-16;38.8MPa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 3

4369991

Installation route: 大臂左3

Length: 1,720 mm
Specification: DN32;6SH-20;42MPa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 29

4607870

Installation route: 小臂油缸

Length: 1,450 mm
Specification: DN32;6SP-20;34.5MPa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 38

4311058

Installation route: Bucket cylinderOriginal Chinese: 铲斗油缸

Length: 1,600 mm
Specification: DN25;4SH-16;38.8MPa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 5A

4369990

Installation route: 大臂左2

Length: 1,910 mm
Specification: DN25;4SH-16;38.8MPa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 31

4249310

Installation route: 装载斗油缸

Length: 1,100 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. 23

4351195

Installation route: 大臂~分配阀左

Length: 1,750 mm
Specification: DN32;6SP-20;27.5MPa
Left fitting: Light-series flangeOriginal Chinese: 法兰-轻型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 9

4334631

Installation route: 铲斗油缸右

Length: 900 mm
Specification: DN25;4SH-16;34.5Mpa
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. 1

4345281

Installation route: 大臂左1

Length: 1,850 mm
Specification: DN32;6SH-20;42MPa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 38

4326995

Installation route: Bucket cylinderOriginal Chinese: 铲斗油缸

Length: 2,000 mm
Specification: DN25;4SH-16;34.5Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 16

4311058

Installation route: 铲斗油缸(后段)

Length: 1,600 mm
Specification: DN25;4SH-16;38.8MPa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 64

4259805

Installation route: 小臂(背部)~过渡阀块(装载斗)

Length: 1,500 mm
Specification: DN25;4SP-16;32Mpa
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

4373399

Installation route: 小臂油缸

Length: 1,000 mm
Specification: DN32;6SH-20;42MPa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 63

4249316

Installation route: Bucket cylinderOriginal Chinese: 铲斗油缸

Length: 1,500 mm
Specification: DN25;4SP-16;32Mpa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: 45°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 ZX450LC Boom Assembly?

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 ZX450LC Boom Assembly?

Based on published records with valid lengths, the range is 900–2,550 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi ZX450LC Boom Assembly?

The most frequent raw specifications in the current published records are: DN25;4SP-16;32Mpa (2 records), DN25;4SH-16;38.8MPa (1 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi ZX450LC Boom Assembly?

Each record keeps the left and right fitting descriptions separate. Current examples: 4259804: left American female thread, flat-face seal; right American female thread, flat-face seal; 4345675: left American female thread, flat-face seal; right American female thread, flat-face seal; 4259804: 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 ZX450LC Boom Assembly hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 102 (4259804), Pipe No. 8 (4345675), Pipe No. 102 (4259804). Open a record to compare its installation position with the linked manual page.