Hydraulic line repair data

Caterpillar CAT®206B Attachments – Lock Valve Hose List

Coverage details
Hoses
5 records
Full specifications
5 records
Systems
1 systems
Length range
457–4,252 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. 5

8U-5399

Installation route: 大臂油缸锁止阀接头总成~液压油箱

Length
1,652 mm
Specification
DN19;2SN-12;21.5Mpa
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

8U-6400

Installation route: 小臂油缸锁止阀~小臂油缸前置阀块

Length
4,252 mm
Specification
DN16;2SN-10;25Mpa
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. 23

8U-5383

Installation route: 大臂油缸锁止阀

Length
985 mm
Specification
DN6;2SN-4;40Mpa
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. 1

8U-5396

Installation route: Left boom-cylinder lock valve → right boom-cylinder lock valveOriginal Chinese: 左大臂油缸锁止阀~右大臂油缸锁止阀

Length
457 mm
Specification
DN6;2SN-4;40Mpa
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. 22

8U-5383

Installation route: 大臂油缸锁止阀~阀块

Length
985 mm
Specification
DN6;2SN-4;40Mpa
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. 2

8U-6406

Installation route: 分节油缸~小臂油缸锁止阀

Length
4,420 mm
Specification
DN16;2SN-10;25Mpa
Left fitting
90° elbow, American female thread, flat-face sealOriginal Chinese: 90°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. 4

5W-9813

Installation route: 大臂油缸锁止阀接头总成~分配阀

Length
996 mm
Specification
DN8;-5;17.5Mpa
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. 3

8U-5397

Installation route: 右大臂油缸锁止阀~大臂油缸锁止阀接头总成

Length
2,229 mm
Specification
DN8;-5;17.5Mpa
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. 1

8U-6405

Installation route: 小臂油缸锁止阀~小臂油缸前置阀块

Length
2,261 mm
Specification
DN19;4SP-12;35Mpa
Left fitting
90° heavy-series flangeOriginal Chinese: 90°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 Caterpillar CAT®206B Attachments – Lock Valve?

There are 5 published records. 5 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®206B Attachments – Lock Valve?

Based on published records with valid lengths, the range is 457–4,252 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®206B Attachments – Lock Valve?

The most frequent raw specifications in the current published records are: DN6;2SN-4;40Mpa (3 records), DN16;2SN-10;25Mpa (1 records), DN19;2SN-12;21.5Mpa (1 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Caterpillar CAT®206B Attachments – Lock Valve?

Each record keeps the left and right fitting descriptions separate. Current examples: 8U-5399: left American female thread, flat-face seal; right American female thread, flat-face seal; 8U-6400: left American female thread, flat-face seal; right American female thread, flat-face seal; 8U-5383: left American female thread, flat-face seal; right American female thread, flat-face seal. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Caterpillar CAT®206B Attachments – Lock Valve hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 5 (8U-5399), Pipe No. 1 (8U-6400), Pipe No. 23 (8U-5383), Pipe No. 1 (8U-5396). Open a record to compare its installation position with the linked manual page.

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