Hydraulic line repair data

Hitachi EX550LC-3 Hose Repair Data

Hitachi EX550LC-3 currently has 42 published hose records for checking length, hose specification, left and right fittings, part number, and diagram pipe number.

Hoses: 42 records
Full specifications: 42 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. 57

4268958

Installation route: 过渡阀块(破碎器)~破碎器滤芯

Length: 700 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. 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. 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. 12

4367019

Installation route: 分配阀上右~过渡阀块(手柄)

Length: 2,100 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. 51

4323284

Installation route: 分配阀前~回转马达(左)

Length: 420 mm
Specification: DN19;1SN-12;10.5MPa
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. 33

4304412

Installation route: 左手柄~进回油阀

Length: 1,300 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. 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. 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. 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. 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. 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. 50

4367008

Installation route: 分配阀上左~过渡阀块(分配阀)

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. 17

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. 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. 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. 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. 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. 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. 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. 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. 32

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. 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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Diagram Pipe No. 37

4366790

Installation route: 行走踏板~过渡阀块(行走踏板)

Length: 1,050 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. 7

4287097

Installation route: 左手柄~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. 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. 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. 44

4366735

Installation route: 分配阀下~电磁阀(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. 6

4292785

Installation route: 回转马达(左)~回转马达(右)

Length: 450 mm
Specification: DN10;4层纤维-6;3.5MPa
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. 6

4343422

Installation route: 分配阀左~回转马达(右)

Length: 1,350 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: 90° light-series flangeOriginal Chinese: 90°法兰-轻型

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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. 6

4299086

Installation route: 左手柄~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. 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. 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. 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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Narrow the selection

Control Lever15 hoses Control Valve9 hoses Pedal8 hoses Attachments3 hoses Attachments – Breaker2 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-3?

The current published data covers 10 systems and 42 hose records. Systems with more listed records include: Control Lever (15 hoses), Control Valve (9 hoses), Pedal (8 hoses), Attachments (3 hoses), Attachments – Breaker (2 hoses).

What is the hose length range for Hitachi EX550LC-3?

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-3?

The most frequent raw specifications in the current published records are: DN10;1SN-6;7Mpa (26 records), DN10;1SN-06;7Mpa (5 records), DN10;1SN-06;18MPa (2 records), DN6;1SN-4;7Mpa (2 records), DN10;2SN-06;21Mpa (1 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi EX550LC-3?

Each record keeps the left and right fitting descriptions separate. Current examples: 4268958: left 英制内螺纹30°外锥; right 英制内螺纹30°外锥; 4218085: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥; 4315873: left 美制内螺纹74°内锥; right 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 EX550LC-3 hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 57 (4268958), Pipe No. 11 (4218085), Pipe No. 9 (4315873), Pipe No. 28 (4367002). 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