Hydraulic line repair data

Caterpillar CAT®224B Attachments – Lock Valve Hose List

Coverage details

Hoses: 4 records
Full specifications: 4 records
Systems: 1 systems
Length range: 495–7,206 mm

Current system

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 2

8U-3679

Installation route: 小臂油缸锁止阀

Length: 7,206 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. 6

8U-0350

Installation route: 过渡接头(大臂油缸锁止阀)~过渡接头(大臂油缸)

Length: 495 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. 11

8U-7187

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: 546 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-3676

Installation route: 小臂油缸锁止阀

Length: 6,797 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-2739

Installation route: 大臂油缸锁止阀~过渡接头(大臂油缸)

Length: 749 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: 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. 9

8U-1355

Installation route: 过渡接头(大臂油缸锁止阀)~过渡接头(大臂油缸锁止阀)

Length: 602 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: 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. 7

8U-0121

Installation route: 过渡接头(大臂油缸锁止阀)

Length: 360 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. 2

8U-0644

Installation route: 大臂油缸锁止阀~过渡接头(大臂油缸)

Length: 794 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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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®224B Attachments – Lock Valve?

There are 4 published records. 4 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®224B Attachments – Lock Valve?

Based on published records with valid lengths, the range is 495–7,206 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®224B Attachments – Lock Valve?

The most frequent raw specifications in the current published records are: DN8;-5;17.5Mpa (3 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®224B Attachments – Lock Valve?

Each record keeps the left and right fitting descriptions separate. Current examples: 8U-3679: left American female thread, flat-face seal; right American female thread, flat-face seal; 8U-0350: left American female thread, flat-face seal; right American female thread, flat-face seal; 8U-7187: 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®224B Attachments – Lock Valve hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 2 (8U-3679), Pipe No. 6 (8U-0350), Pipe No. 11 (8U-7187), Pipe No. 2 (8U-3676). Open a record to compare its installation position with the linked manual page.