Hydraulic line repair data

Hitachi EX400LC Hose Repair Data

Hitachi EX400LC currently has 55 published hose records for checking length, hose specification, left and right fittings, part number, and diagram pipe number.

Hoses: 55 records
Full specifications: 55 records
Systems: 11 systems
Length range: 350–10,000 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. 13

4207981

Installation route: 行走踏板~中转接头

Length: 1,600 mm
Specification: DN10;1层纤维-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. 30

4203027

Installation route: 左手柄~进回油阀

Length: 730 mm
Specification: DN10;1层纤维-6;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. 32

4207357

Installation route: 液压油箱~进回油阀

Length: 2,300 mm
Specification: DN10;1层纤维-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. 86

4236789

Installation route: 分配阀上~过渡阀块(分配阀)

Length: 1,000 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. 31

4248685

Installation route: 分配阀下~接线板(中转接头)

Length: 2,000 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制外螺纹37°外锥

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Diagram Pipe No. 3

4247350

Installation route: 小臂油缸锁止阀~分配阀下

Length: 10,000 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. 9

4217359

Installation route: 中转接头~分配阀下

Length: 1,750 mm
Specification: DN10;1层纤维-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. 47

4217377

Installation route: 分配阀上左~液压油箱

Length: 2,950 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. 9

4250872

Installation route: 大臂油缸锁止阀~过渡阀块(锁止阀)

Length: 590 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. 2

4205378

Installation route: 液压泵~吸油铁管

Length: 800 mm
Specification: DN19;4层纤维-12;3.5MPa
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. 53

4207341

Installation route: 分配阀右~回转马达(右)

Length: 900 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. 2

4107297

Installation route: 大臂油缸黄油管

Length: 600 mm
Specification: DN6;1SN-04;7MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 英制内螺纹30°外锥

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Diagram Pipe No. 21

4248688

Installation route: 控制阀(装载斗)~过渡阀块(分配阀)

Length: 2,100 mm
Specification: DN10;1层纤维-6;14MPa
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. 84

4236792

Installation route: 分配阀右~过渡阀块(分配阀)

Length: 1,040 mm
Specification: DN10;1层纤维-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. 28

4207376

Installation route: 分配阀上左~过渡阀块(隔板)

Length: 1,800 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. 2

4107297

Installation route: Arm-cylinder grease lineOriginal Chinese: 小臂油缸黄油管

Length: 600 mm
Specification: DN6;1SN-04;7MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 英制内螺纹30°外锥

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Diagram Pipe No. 38

4207346

Installation route: 液压泵~过渡阀块(隔板)

Length: 1,800 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. 12

4207393

Installation route: 行走踏板~中转接头

Length: 1,530 mm
Specification: DN10;1层纤维-6;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. 17

4217369

Installation route: 分配阀下~接线板(中转接头)

Length: 2,050 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 90°美制内螺纹37°内锥
Right fitting: 美制外螺纹37°外锥

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Diagram Pipe No. 32

4295191

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

Length: 3,120 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. 30

4270236

Installation route: 液压泵~先导滤芯

Length: 750 mm
Specification: DN12;1SN-8;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. 62

4259804

Installation route: 大臂左1/3/4/5/6

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. 24

4248689

Installation route: 分配阀上右~过渡阀块(分配阀)

Length: 2,000 mm
Specification: DN10;1层纤维-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. 22

4248693

Installation route: 过渡阀块(分配阀)~过渡阀块(隔板)

Length: 390 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. 2

4107297

Installation route: 小臂销黄油管

Length: 600 mm
Specification: DN6;1SN-04;7MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 英制内螺纹30°外锥

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Diagram Pipe No. 19

4214424

Installation route: 电磁阀(配重自卸)~过渡阀块(隔板)

Length: 450 mm
Specification: DN6;2层纤维-4;14MPa
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. 16

4218062

Installation route: 电磁阀(隔板)~过渡阀块(隔板)

Length: 3,400 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. 86

4219349

Installation route: 分配阀上~过渡阀块(分配阀)

Length: 800 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. 48

4207353

Installation route: 液压油箱~过渡阀块(隔板)

Length: 1,870 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. 2

4247349

Installation route: 小臂油缸锁止阀~分配阀上左

Length: 8,300 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. 46

4217376

Installation route: 分配阀上左~液压油箱

Length: 2,800 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. 30

4218085

Installation route: 过渡阀块(分配阀)~过渡阀块(分配阀)

Length: 4,800 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

4219350

Installation route: 过渡阀块(隔板)~过渡阀块(隔板)

Length: 950 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. 33

4210341

Installation route: 备用踏板~行走踏板

Length: 1,200 mm
Specification: DN10;1层纤维-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. 81

4254445

Installation route: 右踏板~过渡阀块(踏板)

Length: 480 mm
Specification: DN10;1层纤维-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. 10

4055122

Installation route: 黄油泵~黄油软管卷盘

Length: 1,350 mm
Specification: DN10;2SN-06;21Mpa
Left fitting: 英制锥形外螺纹
Right fitting: British female thread, 60° external cone seatOriginal Chinese: 英制内螺纹60°外锥

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Narrow the selection

Attachments17 hoses Control Valve14 hoses Pedal4 hoses Attachments – Lock Valve4 hoses Grease Lines4 hoses Control Lever3 hoses Hydraulic Tank3 hoses Hydraulic Pump3 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 EX400LC?

The current published data covers 11 systems and 55 hose records. Systems with more listed records include: Attachments (17 hoses), Control Valve (14 hoses), Pedal (4 hoses), Attachments – Lock Valve (4 hoses), Grease Lines (4 hoses), Control Lever (3 hoses).

What is the hose length range for Hitachi EX400LC?

Based on published records with valid lengths, the range is 350–10,000 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi EX400LC?

The most frequent raw specifications in the current published records are: DN10;1层纤维-6;14MPa (22 records), DN6;2层纤维-4;14MPa (16 records), DN10;1SN-6;7Mpa (5 records), DN6;1SN-04;7MPa (3 records), DN6;1SN-04;22.5MPa (2 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi EX400LC?

Each record keeps the left and right fitting descriptions separate. Current examples: 4207981: left 美制内螺纹37°内锥; right 90°美制内螺纹37°内锥; 4203027: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥; 4207357: 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 EX400LC hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 13 (4207981), Pipe No. 30 (4203027), Pipe No. 32 (4207357), Pipe No. 86 (4236789). 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