Hydraulic line repair data

Hitachi EX400LC-3C Hose Repair Data

Hitachi EX400LC-3C currently has 67 published hose records for checking length, hose specification, left and right fittings, part number, and diagram pipe number.

Hoses: 67 records
Full specifications: 67 records
Systems: 12 systems
Length range: 300–4,800 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. 33

4344302

Installation route: 分配阀上左~过渡阀块(踏板)

Length: 3,000 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. 34

4356518

Installation route: 前小臂油缸锁止阀~后小臂油缸锁止阀

Length: 850 mm
Specification: DN12;4SP-8;34.5Mpa
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. 37

4322514

Installation route: 大臂油缸锁止阀~过渡阀块(锁止阀)

Length: 960 mm
Specification: DN10;1SN-06;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. 31

4316572

Installation route: 回转接头~分配阀左下

Length: 1,450 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: 45° heavy-series flangeOriginal Chinese: 45°法兰-重型

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Diagram Pipe No. 9

4315873

Installation route: 左手柄~中转接头(手柄)

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. 10

4343209

Installation route: 大臂(后段)~卸压安全阀(破碎器)

Length: 900 mm
Specification: DN32;4SP-20;32Mpa
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. 13

4369871

Installation route: 分配阀右~铁管(大臂油缸)

Length: 1,450 mm
Specification: DN32;6SH-20;42MPa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: 75°法兰-重型

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Diagram Pipe No. 81

4366759

Installation route: 过渡阀块(分配阀)~过渡阀块(液压油箱)

Length: 1,350 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. 1

4366775

Installation route: 中转接头(手柄)~分配阀下右

Length: 2,150 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. 36

4287546

Installation route: 右手柄~进回油阀

Length: 1,550 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. 31

4344221

Installation route: 破碎器踏板~过渡阀块(踏板)

Length: 1,000 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. 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. 0

4210340

Installation route: 破碎器踏板~进回油阀

Length: 1,350 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

4311057

Installation route: 小臂油缸

Length: 1,000 mm
Specification: DN32;6SP-20;31MPa
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. 10

4290170

Installation route: 配重自卸踏板~过渡阀块(配重自卸)

Length: 440 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. 72

4366747

Installation route: 分配阀右~过渡阀块(分配阀)

Length: 700 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. 60

4357900

Installation route: 小臂油缸锁止阀~分配阀上左

Length: 3,600 mm
Specification: DN12;2SN-8;20.5MPa
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. 1

4362977

Installation route: 过渡阀块(锁止阀)~回油铁管(液压油箱)

Length: 2,650 mm
Specification: DN32;2SN-20;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. 29

4316573

Installation route: 回转接头~分配阀右下

Length: 1,550 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: 45° heavy-series flangeOriginal Chinese: 45°法兰-重型

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Diagram Pipe No. 12

4322485

Installation route: 液压泵~先导滤芯

Length: 1,000 mm
Specification: DN13;2SN-08;27.5MPa
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. 31

4366780

Installation route: 分配阀下左~过渡阀块(手柄)

Length: 1,900 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. 4

4316006

Installation route: 左手柄~进回油阀

Length: 1,200 mm
Specification: DN10;1SN-06;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. 42

4360932

Installation route: 行走踏板~过渡阀块(行走踏板)

Length: 1,000 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. 87

4366766

Installation route: 回油铁管(液压油箱)~中转接头(踏板)

Length: 900 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. 1

4210341

Installation route: 破碎器踏板~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. 21

4268968

Installation route: 破碎器滤芯~回油铁管(分配阀)

Length: 1,300 mm
Specification: DN32;2SN-20;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. 75

4379282

Installation route: 分配阀下左~电磁阀(分配阀)

Length: 750 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. 8

4366752

Installation route: 中转接头(手柄)~过渡阀块(手柄)

Length: 300 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. 28

4366748

Installation route: 中转接头(踏板)~过渡阀块(踏板)

Length: 560 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. 33

4299085

Installation route: 左手柄~进回油阀

Length: 1,250 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

4308037

Installation route: 先导泵~吸油铁管

Length: 400 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. 90

4366771

Installation route: 分配阀左~液压油箱

Length: 750 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. 11

4218085

Installation route: 配重自卸踏板~过渡阀块(配重自卸)

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. 31

4366751

Installation route: 中转接头(踏板)~过渡阀块(踏板)

Length: 560 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. 84

4366763

Installation route: 电磁阀~中转接头(手柄)

Length: 1,900 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. 43

4366791

Installation route: 行走踏板~过渡阀块(行走踏板)

Length: 1,000 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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Narrow the selection

Control Lever14 hoses Attachments – Breaker10 hoses Control Valve9 hoses Attachments9 hoses Pedal6 hoses Hydraulic Tank5 hoses Attachments – Lock Valve4 hoses Swivel Joint3 hoses Hydraulic Pump3 hoses Boom Assembly2 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-3C?

The current published data covers 12 systems and 67 hose records. Systems with more listed records include: Control Lever (14 hoses), Attachments – Breaker (10 hoses), Control Valve (9 hoses), Attachments (9 hoses), Pedal (6 hoses), Hydraulic Tank (5 hoses).

What is the hose length range for Hitachi EX400LC-3C?

Based on published records with valid lengths, the range is 300–4,800 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi EX400LC-3C?

The most frequent raw specifications in the current published records are: DN10;1SN-6;7Mpa (30 records), DN10;1层纤维-6;14MPa (6 records), DN10;1SN-06;7Mpa (5 records), DN6;1SN-4;7Mpa (4 records), DN10;1SN-06;18MPa (3 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi EX400LC-3C?

Each record keeps the left and right fitting descriptions separate. Current examples: 4344302: left 美制内螺纹37°内锥; right 90°美制内螺纹37°内锥; 4356518: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥; 4322514: left 美制内螺纹37°内锥; right 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-3C hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 33 (4344302), Pipe No. 34 (4356518), Pipe No. 37 (4322514), Pipe No. 31 (4316572). 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