Hydraulic line repair data

Caterpillar CAT®205B Attachments – Lock Valve Hose List

Coverage details

Hoses: 5 records
Full specifications: 5 records
Systems: 1 systems
Length range: 985–5,606 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. 2

8U-6401

Installation route: 小臂油缸锁止阀管路

Length: 5,606 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: 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: 小臂油缸锁止阀管路

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

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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

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Diagram Pipe No. 2

8U-6401

Installation route: 小臂油缸锁止阀~分配阀

Length: 5,606 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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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

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Diagram Pipe No. 2

8U-6406

Installation route: 小臂油缸锁止阀管路

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

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Diagram Pipe No. 1

8U-6405

Installation route: 小臂油缸锁止阀管路

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

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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®205B 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®205B Attachments – Lock Valve?

Based on published records with valid lengths, the range is 985–5,606 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®205B Attachments – Lock Valve?

The most frequent raw specifications in the current published records are: DN16;2SN-10;25Mpa (2 records), DN8;-5;17.5Mpa (2 records), DN6;2SN-4;40Mpa (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®205B Attachments – Lock Valve?

Each record keeps the left and right fitting descriptions separate. Current examples: 8U-6401: 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-6400: 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®205B Attachments – Lock Valve hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 2 (8U-6401), Pipe No. 1 (8U-6400), Pipe No. 1 (8U-6400), Pipe No. 2 (8U-6401). Open a record to compare its installation position with the linked manual page.