Length: 415 mm
Specification: DN10;4SP-6;28Mpa
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

8K-3077

Installation route: Bucket cylinderOriginal Chinese: 铲斗油缸

Length: 1,475 mm
Specification: DN25;4SP-16;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. 25

7V-0916

Installation route: 燃油箱~燃油过滤器

Length: 400 mm
Specification: DN6;1SN-4;19.2Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 17

6C-0057

Installation route: 大臂(前段)~大臂(后段)

Length: 5,750 mm
Specification: DN10;4SP-6;28Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 14

3V-7516

Installation route: 大臂油缸黄油管

Length: 762 mm
Specification: DN5;-3;21Mpa
Left fitting: 美制锥形外螺纹30°内锥
Right fitting: 美制锥形外螺纹

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Diagram Pipe No. 5

7V-7377

Installation route: 左大臂油缸锁止阀~过渡阀块(大臂油缸)

Length: 402 mm
Specification: DN10;2SN-6;33Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 1

8R-0944

Installation route: 电磁阀(液压油箱后)~安全阀(液压油箱后)

Length: 687 mm
Specification: DN10;1SN-6;15.7Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 21

2V-8571

Installation route: 回转马达~回油滤芯

Length: 651 mm
Specification: DN13;1SN-8;14Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 40

3V-4332

Installation route: 回油铁管(分配阀)~安全阀(分配阀后)

Length: 610 mm
Specification: DN19;1SN-12;8.7Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 16

2V-8679

Installation route: 中转接头~过渡阀块(中转接头后)

Length: 794 mm
Specification: DN10;1SN-6;15.7Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 7

8K-3209

Installation route: 小臂油缸

Length: 915 mm
Specification: DN32;4SP-20;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. 7

9V-9316

Installation route: 分配阀(5阀芯)~选择阀

Length: 640 mm
Specification: DN13;4SP-8;28Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 18

6C-0879

Installation route: 小臂破碎器截止阀右

Length: 1,775 mm
Specification: DN10;4SP-6;28Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 26

5C-6136

Installation route: 燃油箱~燃油过滤器

Length: 420 mm
Specification: DN10;1SN-6;15.7Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 3

6W-1395

Installation route: 回转接头~行走马达(规格1)

Length: 950 mm
Specification: DN13;1SN-8;14Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 7

3V-9732

Installation route: 过渡阀块(分配阀上)~组合阀(液压油箱左下)

Length: 1,115 mm
Specification: DN32;4SP-20;35Mpa
Left fitting: 60°法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 6

7V-7383

Installation route: 左大臂油缸锁止阀~过渡阀块(大臂油缸)

Length: 492 mm
Specification: DN13;1SN-8;14Mpa
Left fitting: 45°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 3

3V-1185

Installation route: 先导阀(中转接头后)~过渡阀块(分配阀上)

Length: 930 mm
Specification: DN10;4SP-6;28Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 12

6W-1399

Installation route: 回转接头~行走马达(规格1)

Length: 1,670 mm
Specification: DN25;4SP-16;35Mpa
Left fitting: 23°法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 6

9C-1898

Installation route: 燃油调速控制器~驾驶室地板

Length: 441 mm
Specification: DN6;1SN-4;19.2Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 90°美制内螺纹37°锥

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Diagram Pipe No. 7

9C-1899

Installation route: 燃油调速控制器~驾驶室地板

Length: 414 mm
Specification: DN6;1SN-4;19.2Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 90°美制内螺纹37°锥

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Diagram Pipe No. 5

8K-3201

Installation route: 铲斗油缸(前段)(规格1)

Length: 1,260 mm
Specification: DN25;4SP-16;35Mpa
Left fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 28

5V-5524

Installation route: 回转接头~行走马达(规格2)

Length: 1,370 mm
Specification: DN25;4SP-16;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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Diagram Pipe No. 29

6C-1694

Installation route: 回转接头~行走马达(规格2)

Length: 1,300 mm
Specification: DN25;4SP-16;35Mpa
Left fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型
Right fitting: 60°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®229?

The current published data covers 11 systems and 27 hose records. Systems with more listed records include: Control Valve (5 hoses), Solenoid Valve (5 hoses), Control Lever (3 hoses), Attachments (3 hoses), Boom Assembly (2 hoses), Fuel Lines (2 hoses).

What is the hose length range for Caterpillar CAT®229?

Based on published records with valid lengths, the range is 400–5,750 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®229?

The most frequent raw specifications in the current published records are: DN10;4SP-6;28Mpa (7 records), DN10;1SN-6;15.7Mpa (3 records), DN13;1SN-8;14Mpa (3 records), DN13;4SP-8;28Mpa (2 records), DN19;1SN-12;8.7Mpa (2 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Caterpillar CAT®229?

Each record keeps the left and right fitting descriptions separate. Current examples: 8K-3220: left Heavy-series flange; right Heavy-series flange; 5T-4525: left 美制内螺纹37°锥; right 美制内螺纹37°锥; 2V-0156: left 美制内螺纹37°锥; right 美制内螺纹37°锥. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Caterpillar CAT®229 hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 16 (8K-3220), Pipe No. 7 (5T-4525), Pipe No. 41 (2V-0156), Pipe No. 8 (2V-0665). 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®229 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-174-229--43415426233137343b323239/

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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