Hydraulic line repair data

Hitachi ZX250 Hose Repair Data

Hitachi ZX250 currently has 75 published hose records for checking length, hose specification, left and right fittings, part number, and diagram pipe number.

Hoses: 75 records
Full specifications: 75 records
Systems: 15 systems
Length range: 400–4,350 mm

Hose repair details

Hose Length and Fitting List

Showing 36 representative records. Return to the finder for a more specific search.

Diagram Pipe No. 2

4437072

Installation route: Right boom-cylinder grease lineOriginal Chinese: 右大臂油缸黄油管

Length: 2,920 mm
Specification: DN6;2层纤维-4;14MPa
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. 0

4437653

Installation route: 左手柄~进回油阀

Length: 1,950 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 美制内螺纹74°内锥

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Diagram Pipe No. 1

4437943

Installation route: 分配阀下~液压油箱

Length: 1,350 mm
Specification: DN6;1SN-04;22.5MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 17

4437944

Installation route: 电磁阀~进回油阀

Length: 650 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 10

4444730

Installation route: 电磁阀~进回油阀

Length: 3,550 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 7

4305255

Installation route: 先导泵~控制阀(辅助)

Length: 500 mm
Specification: DN12;2SN-8;21Mpa
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. 0

4258300

Installation route: Swivel joint → travel motorOriginal Chinese: 回转接头~行走马达

Length: 2,300 mm
Specification: DN19;4SP-12;38Mpa
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. 15

4438288

Installation route: 右手柄~进回油阀

Length: 1,700 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 美制内螺纹74°内锥

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Diagram Pipe No. 9

4442133

Installation route: 液压泵~堵头(减震管)

Length: 600 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 美制内螺纹74°内锥

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Diagram Pipe No. 14

4431844

Installation route: 行走踏板~中转接头

Length: 3,000 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 美制内螺纹74°内锥

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Diagram Pipe No. 14

9237294

Installation route: 小臂油缸锁止阀~液压油箱

Length: 4,350 mm
Specification: DN10;1SN-6;7Mpa
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. 10

DH900311

Installation route: 分配阀左~分配阀左

Length: 450 mm
Specification: DN6;1SN-04;22.5MPa
Left fitting: 90°美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 53

4453683

Installation route: 分配阀左~流速切换阀

Length: 850 mm
Specification: DN6;1SN-4;7Mpa
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. 5

4437637

Installation route: 左手柄~中转接头

Length: 2,950 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 美制内螺纹74°内锥

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Diagram Pipe No. 11

4188920

Installation route: 大臂(破碎器)~卸压安全阀(破碎器)

Length: 800 mm
Specification: DN19;4SP-12;38Mpa
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. 5

4437938

Installation route: 回转接头~电磁阀

Length: 1,600 mm
Specification: DN6;1SN-04;22.5MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 45°美制内螺纹74°内锥

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Diagram Pipe No. 1

4437930

Installation route: 电磁阀~先导滤芯

Length: 1,550 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 45°美制内螺纹74°内锥

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Diagram Pipe No. 40

4402701

Installation route: 分配阀右~液压油箱

Length: 720 mm
Specification: DN6;1SN-4;7MPa
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. 6

4437944

Installation route: 分配阀上~液压油箱

Length: 650 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 22

4452035

Installation route: 过渡阀块(辅助)~过渡阀块(辅助)

Length: 400 mm
Specification: DN6;1SN-4;7Mpa
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. 14A

4618390

Installation route: 小臂油缸锁止阀~液压油箱

Length: 4,350 mm
Specification: DN10;1SN-6;7Mpa
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. 18

4452733

Installation route: 过渡阀块(控制阀(分节油缸))~过渡阀块

Length: 450 mm
Specification: DN6;1SN-04;22.5MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 美制内螺纹74°内锥

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Diagram Pipe No. 14

9199986

Installation route: 回转接头~回油铁管(液压油箱)

Length: 2,500 mm
Specification: DN13;2SN-08;27.5MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 23A

4331726

Installation route: 回油铁管(液压油箱)~先导滤芯

Length: 1,700 mm
Specification: DN13;1SN-08;16MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 33A

4435692

Installation route: 机油管

Length: 1,350 mm
Specification: DN16;1SN-10;13Mpa
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. 12

4285797

Installation route: 控制阀(辅助)~慢速回流阀

Length: 650 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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Diagram Pipe No. 23

4452037

Installation route: 流速切换阀~过渡阀块(辅助)

Length: 850 mm
Specification: DN6;1SN-4;7Mpa
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. 3

4437634

Installation route: 左手柄~中转接头

Length: 2,950 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 美制内螺纹74°内锥

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Diagram Pipe No. 13

4465617

Installation route: 进回油阀~中转接头

Length: 3,200 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 美制内螺纹74°内锥

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Diagram Pipe No. 25

4444735

Installation route: 分配阀后~液压油箱

Length: 950 mm
Specification: DN6;1SN-04;22.5MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 28

4462262

Installation route: 大臂(辅助)~控制阀(辅助)

Length: 3,000 mm
Specification: DN10;2SN-6;34.5MPa
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. 13

4252854

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

Length: 900 mm
Specification: DN19;4SP-12;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. 23

9191786

Installation route: 回油铁管(液压油箱)~先导滤芯

Length: 1,700 mm
Specification: DN13;2SN-08;27.5MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 22

4444720

Installation route: 右手柄~中转接头

Length: 2,800 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 美制内螺纹74°内锥

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Diagram Pipe No. 10

4384383

Installation route: 大臂油缸

Length: 790 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. 11

4431841

Installation route: 行走踏板~中转接头

Length: 3,150 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 美制内螺纹74°内锥

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Narrow the selection

Control Lever16 hoses Attachments14 hoses Swivel Joint11 hoses Control Valve5 hoses Hydraulic Tank4 hoses Pedal4 hoses Boom Assembly3 hoses Solenoid Valve3 hoses Attachments – Quick Coupler3 hoses Attachments – Breaker3 hoses Grease Lines3 hoses Supply and Return Valve2 hoses Attachments – Lock Valve2 hoses

Based on current published data

Common Repair Questions

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

Which systems and hoses are currently listed for Hitachi ZX250?

The current published data covers 15 systems and 75 hose records. Systems with more listed records include: Control Lever (16 hoses), Attachments (14 hoses), Swivel Joint (11 hoses), Control Valve (5 hoses), Hydraulic Tank (4 hoses), Pedal (4 hoses).

What is the hose length range for Hitachi ZX250?

Based on published records with valid lengths, the range is 400–4,350 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi ZX250?

The most frequent raw specifications in the current published records are: DN10;1SN-06;18MPa (24 records), DN6;1SN-04;22.5MPa (16 records), DN6;1SN-4;7Mpa (7 records), DN10;1SN-6;7Mpa (5 records), DN19;4SP-12;38Mpa (5 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi ZX250?

Each record keeps the left and right fitting descriptions separate. Current examples: 4437072: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥; 4437653: left 美制内螺纹74°内锥; right 美制内螺纹74°内锥; 4437943: left 美制内螺纹74°内锥; right 90°美制内螺纹74°内锥. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Hitachi ZX250 hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 2 (4437072), Pipe No. 0 (4437653), Pipe No. 1 (4437943), Pipe No. 17 (4437944). Open a record to compare its installation position with the linked manual page.

Hose Length and Fitting List

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Common Repair Questions