Hydraulic line repair data

Hitachi EX400LC-3C Boom Assembly Hose List

Coverage details
Hoses
2 records
Full specifications
2 records
Systems
1 systems
Length range
900–1,000 mm

Current system

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Use the number on the diagram, a part number, connection point, length, hose size, or fitting.

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Hose repair details

Hose Length and Fitting List

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
View full repair specifications

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
View full repair specifications

Diagram Pipe No. 79

4369991

Installation route: 大臂左3

Length
1,720 mm
Specification
DN32;6SH-20;42MPa
Left fitting
Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting
90° heavy-series flangeOriginal Chinese: 90°法兰-重型
View full repair specifications

Diagram Pipe No. 16

4311058

Installation route: 铲斗油缸(后段)

Length
1,600 mm
Specification
DN25;4SH-16;38.8MPa
Left fitting
Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting
Heavy-series flangeOriginal Chinese: 法兰-重型
View full repair specifications

Diagram Pipe No. 38

4311058

Installation route: Bucket cylinderOriginal Chinese: 铲斗油缸

Length
1,600 mm
Specification
DN25;4SH-16;38.8MPa
Left fitting
Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting
Heavy-series flangeOriginal Chinese: 法兰-重型
View full repair specifications

Diagram Pipe No. 78A

4369990

Installation route: 大臂左2

Length
1,910 mm
Specification
DN25;4SH-16;38.8MPa
Left fitting
Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting
90° heavy-series flangeOriginal Chinese: 90°法兰-重型
View full repair specifications

Diagram Pipe No. 77

4345280

Installation route: 大臂左4

Length
1,760 mm
Specification
DN25;4SH-16;38.8MPa
Left fitting
Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting
90° heavy-series flangeOriginal Chinese: 90°法兰-重型
View full repair specifications

Diagram Pipe No. 9

4334631

Installation route: 铲斗油缸右

Length
900 mm
Specification
DN25;4SH-16;34.5Mpa
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
View full repair specifications

Diagram Pipe No. 78

9155746

Installation route: 大臂左2

Length
1,910 mm
Specification
DN25;4SH-16;38.8MPa
Left fitting
Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting
90° heavy-series flangeOriginal Chinese: 90°法兰-重型
View full repair specifications

Diagram Pipe No. 76

4345281

Installation route: 大臂左1

Length
1,850 mm
Specification
DN32;6SH-20;42MPa
Left fitting
Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting
90° heavy-series flangeOriginal Chinese: 90°法兰-重型
View full repair specifications

Diagram Pipe No. 38

4326995

Installation route: Bucket cylinderOriginal Chinese: 铲斗油缸

Length
2,000 mm
Specification
DN25;4SH-16;34.5Mpa
Left fitting
Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting
90° heavy-series flangeOriginal Chinese: 90°法兰-重型
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.

How many hoses are currently listed for Hitachi EX400LC-3C Boom Assembly?

There are 2 published records. 2 include a length, both end fittings, and a part number or diagram pipe number.

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

Based on published records with valid lengths, the range is 900–1,000 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

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

The most frequent raw specifications in the current published records are: DN25;4SH-16;38.8MPa (1 records), DN32;6SP-20;31MPa (1 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 Boom Assembly?

Each record keeps the left and right fitting descriptions separate. Current examples: 4345675: left American female thread, flat-face seal; right American female thread, flat-face seal; 4311057: left Heavy-series flange; right Heavy-series flange. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Hitachi EX400LC-3C Boom Assembly hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 8 (4345675), Pipe No. 30 (4311057). Open a record to compare its installation position with the linked manual page.

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