Hydraulic line repair data

Caterpillar CAT®224B Hose Repair Data

Coverage details

Hoses: 54 records
Full specifications: 54 records
Systems: 12 systems
Length range: 396–10,396 mm

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AttachmentsBoom AssemblySwivel JointControl LeverHydraulic PumpAttachments – BreakerAttachments – Lock ValveSolenoid ValveControl ValveSupply and Return Valve

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Hose repair details

Hose Length and Fitting List

Showing 36 representative records. Return to the finder for a more specific search.

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. 2

8U-3409

Installation route: 铲斗油缸(后段)

Length: 1,400 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. 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. 9

8U-0106

Installation route: 回转接头~电磁阀(连接支腿油缸)

Length: 1,580 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. 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. 6

8U-3423

Installation route: 铲斗油缸(后段)

Length: 3,000 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. 25

8U-0347

Installation route: 进回油阀~液压油箱

Length: 896 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. 9

8U-1638

Installation route: 回转接头~电磁阀

Length: 1,256 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. 13

8U-1332

Installation route: 分配阀前~过渡阀块(大臂座销)

Length: 580 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. 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. 10

8U-0349

Installation route: 左手柄~进回油阀

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: 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-0349

Installation route: 电磁阀~安全锁定杆

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

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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. 3

8U-0899

Installation route: 大臂(破碎器)~小臂(破碎器)

Length: 1,091 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. 9

8U-0325

Installation route: 电磁阀~阀块

Length: 645 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. 18

8U-0348

Installation route: 液压泵后~液压油过滤器

Length: 847 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. 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. 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. 15

8U-2993

Installation route: 液压泵~(连接液压泵)

Length: 541 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. 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. 2

8U-0109

Installation route: 电磁阀~过渡阀块

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. 8

8U-2131

Installation route: 大臂(破碎器)~破碎器

Length: 2,347 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. 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. 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. 1

8U-0347

Installation route: 分配阀后~电磁阀

Length: 896 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-3100

Installation route: 回转接头~前传动轴

Length: 1,295 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. 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. 15

8U-1889

Installation route: 进回油阀~过渡阀块(连接液压油过滤器)

Length: 396 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. 3

8U-0663

Installation route: 铲斗油缸~分流阀(小臂)

Length: 1,090 mm
Specification: DN19;4SP-12;35Mpa
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-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. 9

8U-3052

Installation route: 液压泵前~液压油箱

Length: 402 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. 20

8U-3431

Installation route: 小臂油缸(分节油缸规格)

Length: 5,346 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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Based on current published data

Common Repair Questions

Questions appear only when a published record or linked PDF page provides the answer.

Which systems and hoses are currently listed for Caterpillar CAT®224B?

The current published data covers 12 systems and 54 hose records. Systems with more listed records include: Attachments (16 hoses), Boom Assembly (7 hoses), Swivel Joint (5 hoses), Control Lever (5 hoses), Hydraulic Pump (4 hoses), Attachments – Breaker (4 hoses).

What is the hose length range for Caterpillar CAT®224B?

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

The most frequent raw specifications in the current published records are: DN8;-5;17.5Mpa (16 records), DN10;2SN-6;33Mpa (11 records), DN25;4SP-16;28Mpa (11 records), DN13;6SH-8;42Mpa (5 records), DN32;2SN-20;12.5Mpa (3 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?

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-3409: left Heavy-series flange; right Heavy-series flange; 8U-3095: 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 hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 16 (8U-3097), Pipe No. 2 (8U-3409), Pipe No. 23 (8U-3095), Pipe No. 14 (8U-3332). Open a record to compare its installation position with the linked manual page.

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I am checking hydraulic hose repair information for "Caterpillar CAT®224B Hose Repair Data". Use web search and cite a source for every factual point. Compare this HoseSeek page with manufacturer manuals and reliable parts documentation: https://www.hoseseek.com/machines/caterpillar/cat-174-224b--43415426233137343b32323442/

Verify, where applicable:
1. Exact machine model and any serial-number range.
2. Hydraulic system and installation route.
3. Hose part number and diagram pipe number.
4. Finished length, hose specification, and pressure rating.
5. Both end fittings, including thread, sealing seat, size, and angle.
6. Installation-diagram position and routing.

State explicitly what you could not verify. Do not infer a missing dimension or fitting. End with a short on-machine checklist for a hose repair technician.

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