Hydraulic line repair data

Hitachi EX550LC Hose Repair Data

Hitachi EX550LC currently has 61 published hose records for checking length, hose specification, left and right fittings, part number, and diagram pipe number.

Hoses: 61 records
Full specifications: 61 records
Systems: 10 systems
Length range: 300–10,000 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. 5

4367013

Installation route: 液压油箱~进回油阀

Length: 2,200 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. 27

4367001

Installation route: 分配阀右~液压油箱

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. 6

4343390

Installation route: 分配阀上~电磁阀(液压油箱)

Length: 1,500 mm
Specification: DN6;2层纤维-4;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. 44

4366735

Installation route: 分配阀下~过渡阀块(分配阀)

Length: 500 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. 28

4304437

Installation route: 中转接头(行走踏板)~过渡阀块(行走踏板)

Length: 560 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. 1

4367014

Installation route: 中转接头(手柄)~分配阀下右

Length: 2,400 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. 30

4366750

Installation route: 中转接头(行走踏板)~过渡阀块(行走踏板)

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. 28

4366748

Installation route: 中转接头(行走踏板)~过渡阀块(行走踏板)

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. 30

4304441

Installation route: 中转接头(行走踏板)~过渡阀块(行走踏板)

Length: 560 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

4366995

Installation route: 分配阀上~电磁阀(液压油箱)

Length: 1,200 mm
Specification: DN6;1SN-4;7Mpa
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

4343401

Installation route: 进回油阀~过渡阀块(液压油箱)

Length: 2,200 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. 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. 31

4366751

Installation route: 中转接头(行走踏板)~过渡阀块(行走踏板)

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. 16

4343411

Installation route: 中转接头(踏板)~分配阀下左

Length: 2,200 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. 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. 34

4281530

Installation route: 行走踏板~进回油阀

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. 35

4281535

Installation route: 行走踏板~过渡阀块(行走踏板)

Length: 1,050 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. 19

4343414

Installation route: 分配阀上左~进回油阀

Length: 4,850 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

4304409

Installation route: 右手柄~进回油阀

Length: 1,600 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. 9

4315873

Installation route: 左手柄~过渡阀块(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. 28

4367002

Installation route: 分配阀左~液压油箱

Length: 2,000 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. 34

4287527

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. 8

4259316

Installation route: 中转接头(手柄)~过渡阀块(手柄)

Length: 300 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. 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. 32

4304411

Installation route: 左手柄~进回油阀

Length: 1,150 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. 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. 24

4343398

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

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. 36

4316007

Installation route: 右手柄~进回油阀

Length: 1,600 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. 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. 44

4379282

Installation route: 分配阀下~过渡阀块(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. 22

4366998

Installation route: 中转接头(手柄)~中转接头(行走踏板)

Length: 800 mm
Specification: DN10;1SN-6;7Mpa
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. 37

4281537

Installation route: 行走踏板~过渡阀块(行走踏板)

Length: 1,050 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. 29

4366749

Installation route: 中转接头(行走踏板)~过渡阀块(行走踏板)

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. 9

4248610

Installation route: 分配阀上左~过渡阀块(配重自卸)

Length: 3,500 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

4353626

Installation route: 黄油软管卷盘~黄油枪

Length: 10,000 mm
Specification: DN10;2SN-06;21Mpa
Left fitting: 英制外螺纹30°内锥
Right fitting: 英制外螺纹30°内锥

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Diagram Pipe No. 44

4317660

Installation route: 分配阀下~过渡阀块(分配阀)

Length: 500 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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Narrow the selection

Control Lever18 hoses Control Valve17 hoses Pedal14 hoses Hydraulic Tank4 hoses Attachments3 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 EX550LC?

The current published data covers 10 systems and 61 hose records. Systems with more listed records include: Control Lever (18 hoses), Control Valve (17 hoses), Pedal (14 hoses), Hydraulic Tank (4 hoses), Attachments (3 hoses).

What is the hose length range for Hitachi EX550LC?

Based on published records with valid lengths, the range is 300–10,000 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi EX550LC?

The most frequent raw specifications in the current published records are: DN10;1SN-6;7Mpa (26 records), DN10;1层纤维-6;14MPa (14 records), DN6;2层纤维-4;14MPa (7 records), DN10;1SN-06;7Mpa (5 records), DN10;1SN-06;18MPa (2 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi EX550LC?

Each record keeps the left and right fitting descriptions separate. Current examples: 4367013: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥; 4367001: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥; 4343390: left 美制内螺纹37°内锥; right 45°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 EX550LC hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 5 (4367013), Pipe No. 27 (4367001), Pipe No. 6 (4343390), Pipe No. 44 (4366735). 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