Hydraulic line repair data

Caterpillar CAT®224B Attachments Hose List

Coverage details

Hoses: 16 records
Full specifications: 16 records
Systems: 1 systems
Length range: 495–10,396 mm

Current system

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 16

8U-3097

Installation route: 后桥~过渡接头(回转接头旁)

Length: 901 mm
Specification: DN10;2SN-6;33Mpa
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. 23

8U-3095

Installation route: 前桥~过渡接头(回转接头旁)

Length: 1,750 mm
Specification: DN10;2SN-6;33Mpa
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. 14

8U-3332

Installation route: 过渡阀块(大臂)~过渡阀块(小臂)

Length: 7,691 mm
Specification: DN32;2SN-20;12.5Mpa
Left fitting: Light-series flangeOriginal Chinese: 法兰-轻型
Right fitting: Light-series flangeOriginal Chinese: 法兰-轻型

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Diagram Pipe No. 1

8U-1885

Installation route: 大臂铁管~快速断开连接器(小臂)

Length: 2,400 mm
Specification: DN13;6SH-8;42Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 4

8U-4200

Installation route: 大臂油缸~大臂油缸

Length: 1,066 mm
Specification: DN25;4SP-16;28Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 1

8U-1887

Installation route: 大臂铁管~快速断开连接器(小臂)

Length: 2,200 mm
Specification: DN13;6SH-8;42Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 3

8U-3405

Installation route: 大臂接头总成~大臂铁管

Length: 3,700 mm
Specification: DN13;6SH-8;42Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 13

8U-3331

Installation route: 过渡阀块(大臂)~过渡阀块(小臂)

Length: 7,695 mm
Specification: DN25;4SP-16;28Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 10

8U-2653

Installation route: 大臂附加装置管

Length: 10,396 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. 6

8U-0109

Installation route: 过渡阀块(驾驶室)~过渡接头(驾驶室)

Length: 1,386 mm
Specification: DN10;2SN-6;33Mpa
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. 31

8U-3049

Installation route: 液压油散热器~

Length: 1,999 mm
Specification: DN25;2SN-16;16.5Mpa
Left fitting: Light-series flangeOriginal Chinese: 法兰-轻型
Right fitting: Light-series flangeOriginal Chinese: 法兰-轻型

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Diagram Pipe No. 8

8U-0350

Installation route: 推土铲手柄~进回油阀

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. 1

8U-4150

Installation route: 大臂(附加装置)~小臂(附加装置)

Length: 1,500 mm
Specification: DN13;6SH-8;42Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 1

8U-0682

Installation route: 大臂铁管~快速断开连接器(小臂)

Length: 1,350 mm
Specification: DN13;6SH-8;42Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 13

8U-3335

Installation route: 过渡阀块(大臂)~过渡阀块(小臂)

Length: 7,297 mm
Specification: DN25;4SP-16;28Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 14

8U-3336

Installation route: 过渡阀块(大臂)~过渡阀块(小臂)

Length: 7,299 mm
Specification: DN32;2SN-20;12.5Mpa
Left fitting: Light-series flangeOriginal Chinese: 法兰-轻型
Right fitting: Light-series flangeOriginal Chinese: 法兰-轻型

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Diagram Pipe No. 5

8U-3102

Installation route: 前桥~过渡接头(回转接头旁)

Length: 1,902 mm
Specification: DN10;2SN-6;33Mpa
Left fitting: 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°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. 8

8U-0112

Installation route: 蓄能器~过渡阀块(驾驶室后)

Length: 730 mm
Specification: DN10;2SN-6;33Mpa
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. 17

8U-6648

Installation route: 过渡接头(分配阀右)~回油铁管

Length: 750 mm
Specification: DN25;4SP-16;28Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 16

8U-2643

Installation route: 大臂油缸~大臂油缸

Length: 1,260 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: 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. 4

8U-0100

Installation route: 左踏板~右踏板

Length: 600 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. 17

8U-3093

Installation route: 左支腿油缸~右支腿油缸

Length: 406 mm
Specification: DN10;2SN-6;33Mpa
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. 8

8U-4151

Installation route: 小臂阀块~快速断开连接器(小臂)

Length: 2,300 mm
Specification: DN13;6SH-8;42Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 1

5W-9864

Installation route: 右踏板~分配阀X1口

Length: 2,980 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. 14

8U-4146

Installation route: 过渡接头(小臂上)~附加装置

Length: 2,398 mm
Specification: DN19;4SP-12;35Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 2

5W-9998

Installation route: 右踏板~分配阀Y1口

Length: 2,770 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. 11

8U-0343

Installation route: 推土铲手柄~进回油阀

Length: 655 mm
Specification: DN8;2SN-5;35Mpa
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. 36

8U-1056

Installation route: 液压油冷却器~铁管

Length: 1,039 mm
Specification: DN25;2SN-16;16.5Mpa
Left fitting: 45°法兰-轻型
Right fitting: 90° light-series flangeOriginal Chinese: 90°法兰-轻型

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Diagram Pipe No. 11

8U-1342

Installation route: 大臂附加装置管

Length: 867 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: 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-2966

Installation route: 计量泵~过渡阀块(分配阀左)

Length: 2,851 mm
Specification: DN13;2SN-8;27.5Mpa
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-3110

Installation route: 油缸

Length: 640 mm
Specification: DN10;2SN-6;33Mpa
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-0927

Installation route: 手动阀(大臂座销下)~过渡阀块(连接分配阀)

Length: 446 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-1072

Installation route: 手动阀(大臂座销下)~过渡阀块(大臂座销下)

Length: 667 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: 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

8U-0101

Installation route: 左踏板~过渡阀块(驾驶室)

Length: 547 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-0927

Installation route: 左踏板~右踏板

Length: 446 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. 23

8U-0112

Installation route: 过渡阀块(连接液压泵)~堵板

Length: 730 mm
Specification: DN10;2SN-6;33Mpa
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?

There are 16 published records. 16 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?

Based on published records with valid lengths, the range is 495–10,396 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?

The most frequent raw specifications in the current published records are: DN13;6SH-8;42Mpa (5 records), DN10;2SN-6;33Mpa (3 records), DN25;4SP-16;28Mpa (3 records), DN32;2SN-20;12.5Mpa (2 records), DN25;2SN-16;16.5Mpa (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®224B Attachments?

Each record keeps the left and right fitting descriptions separate. Current examples: 8U-3097: left American female thread, flat-face seal; right American female thread, flat-face seal; 8U-3095: left American female thread, flat-face seal; right American female thread, flat-face seal; 8U-3332: left Light-series flange; right Light-series flange. 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 hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 16 (8U-3097), Pipe No. 23 (8U-3095), Pipe No. 14 (8U-3332), Pipe No. 1 (8U-1885). Open a record to compare its installation position with the linked manual page.