Hydraulic line repair data

Hitachi EX17U Hose Repair Data

Coverage details
Hoses
15 records
Full specifications
15 records
Systems
6 systems
Length range
350–2,790 mm

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Hose repair details

Hose Length and Fitting List

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

Diagram Pipe No. 23

4453160

Installation route: 大臂油缸~大臂右1

Length
630 mm
Specification
DN6;1SN-4;20.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 17

4453171

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

Length
830 mm
Specification
DN6;2层纤维-4;14MPa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 15

4453166

Installation route: 大臂(破碎器)~接头(破碎器)

Length
600 mm
Specification
DN10;2SN-6;20.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 42

4451847

Installation route: 液压泵~先导滤芯

Length
350 mm
Specification
DN10;1SN-6;7Mpa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 25

4453162

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

Length
820 mm
Specification
DN6;1SN-4;20.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 19

4453411

Installation route: 左手柄~液压油箱

Length
2,740 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 14

4453168

Installation route: 回转接头~右行走马达

Length
810 mm
Specification
DN10;2SN-6;20.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 19

4453426

Installation route: 左手柄~分配阀左前

Length
950 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 14

4453425

Installation route: 右手柄~分配阀右后

Length
1,050 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 26

4453163

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

Length
490 mm
Specification
DN6;1SN-4;20.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 24

4453161

Installation route: 大臂油缸~大臂右2

Length
760 mm
Specification
DN6;1SN-4;20.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 13

4453167

Installation route: 回转接头~左行走马达

Length
810 mm
Specification
DN10;2SN-6;20.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 40

4453421

Installation route: 分配阀右后~模式转换阀

Length
480 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 18

4453410

Installation route: 右手柄~液压油箱

Length
2,790 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 34

4453416

Installation route: 右手柄~模式转换阀

Length
1,250 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
英制内螺纹30°外锥
Right fitting
英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 16

4453399

Installation route: 回转接头~分配阀上右

Length
420 mm
Specification
DN10;2SN-6;20.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 7

4453392

Installation route: 大臂左4

Length
2,010 mm
Specification
DN6;1SN-4;20.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 20

4453427

Installation route: 左手柄~分配阀右前

Length
800 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
英制内螺纹30°外锥
Right fitting
45°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 44

4451290

Installation route: 液压油箱~电磁阀

Length
1,510 mm
Specification
DN10;1SN-6;7Mpa
Left fitting
英制内螺纹30°外锥
Right fitting
45°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 9

4453394

Installation route: 大臂右1

Length
2,160 mm
Specification
DN6;1SN-4;20.5MPa
Left fitting
90°英制内螺纹30°外锥
Right fitting
英制外螺纹30°内锥
View full repair specifications

Diagram Pipe No. 18

4453413

Installation route: 行走踏板~分配阀右后

Length
460 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
45°英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 18

4453401

Installation route: 回转接头~分配阀上右

Length
390 mm
Specification
DN10;2SN-6;20.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 9

4451844

Installation route: 液压泵~分配阀上右

Length
440 mm
Specification
DN10;2SN-6;20.5MPa
Left fitting
90°英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 14

4451269

Installation route: 分配阀上左~回油铁管(液压油箱)

Length
550 mm
Specification
DN12;4层纤维-8;3.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 19

4453414

Installation route: 行走踏板~分配阀左前

Length
640 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
90°英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 15

4453398

Installation route: 回转接头~分配阀上左

Length
480 mm
Specification
DN10;2SN-6;20.5MPa
Left fitting
90°英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 18

4454731

Installation route: 回转接头~推土器油缸

Length
600 mm
Specification
DN6;1SN-4;20.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 18

4453413

Installation route: 行走踏板~分配阀右后

Length
460 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
45°英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 37

4453419

Installation route: 左手柄~模式转换阀

Length
1,160 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 22

4453403

Installation route: 分配阀上右~回转马达

Length
410 mm
Specification
DN6;1SN-4;14MPa
Left fitting
45°英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 39

4453420

Installation route: 分配阀左后~模式转换阀

Length
500 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 9

4453394

Installation route: 大臂右1

Length
2,160 mm
Specification
DN6;1SN-4;20.5MPa
Left fitting
90°英制内螺纹30°外锥
Right fitting
英制外螺纹30°内锥
View full repair specifications

Diagram Pipe No. 19

4453414

Installation route: 行走踏板~分配阀左前

Length
640 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
90°英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 10

4451265

Installation route: 液压泵~分配阀上左

Length
410 mm
Specification
DN10;2SN-6;20.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 23

4451294

Installation route: 行走踏板~电磁阀

Length
910 mm
Specification
DN5;1SN-03;7Mpa
Left fitting
90°英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

Diagram Pipe No. 8

4453393

Installation route: 大臂左1

Length
1,860 mm
Specification
DN6;1SN-4;20.5MPa
Left fitting
英制内螺纹30°外锥
Right fitting
90°英制内螺纹30°外锥
View full repair specifications

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 EX17U?

The current published data covers 6 systems and 15 hose records. Systems with more listed records include: Control Lever (5 hoses), Boom Assembly (4 hoses), Swivel Joint (3 hoses).

What is the hose length range for Hitachi EX17U?

Based on published records with valid lengths, the range is 350–2,790 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi EX17U?

The most frequent raw specifications in the current published records are: DN5;1SN-03;7Mpa (6 records), DN6;1SN-4;20.5MPa (4 records), DN10;2SN-6;20.5MPa (3 records), DN10;1SN-6;7Mpa (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 EX17U?

Each record keeps the left and right fitting descriptions separate. Current examples: 4453160: left 英制内螺纹30°外锥; right 英制内螺纹30°外锥; 4453171: left 英制内螺纹30°外锥; right 英制内螺纹30°外锥; 4453166: left 英制内螺纹30°外锥; right 英制内螺纹30°外锥. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Hitachi EX17U hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 23 (4453160), Pipe No. 17 (4453171), Pipe No. 15 (4453166), Pipe No. 42 (4451847). Open a record to compare its installation position with the linked manual page.

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I am checking hydraulic hose repair information for "Hitachi EX17U Hose Repair Data". Use web search and cite a source for every factual point. Compare this HoseSeek page with manufacturer manuals and reliable parts documentation: https://www.hoseseek.com/machines/hitachi/ex17u--4558313755/

Verify, where applicable:
1. Exact machine model and any serial-number range.
2. Hydraulic system and installation route.
3. Hose part number and diagram pipe number.
4. Finished length, hose specification, and pressure rating.
5. Both end fittings, including thread, sealing seat, size, and angle.
6. Installation-diagram position and routing.

State explicitly what you could not verify. Do not infer a missing dimension or fitting. End with a short on-machine checklist for a hose repair technician.
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