Hydraulic line repair data

Caterpillar CAT®212B Attachments Hose List

Coverage details

Hoses: 8 records
Full specifications: 8 records
Systems: 1 systems
Length range: 800–2,156 mm

Current system

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 34

8U-7090

Installation route: 过渡阀块~油缸总成

Length: 1,397 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-5383

Installation route: 手动阀(大臂油缸右)~大臂铁管

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. 1

8U-4150

Installation route: 大臂铁管~过渡阀块(小臂)

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. 2

5W-4940

Installation route: 小臂(附加装置)~工作装置

Length: 1,901 mm
Specification: DN13;6SH-8;42Mpa
Left fitting: 公制内螺纹24°锥带O形圈-重型
Right fitting: 公制内螺纹24°锥带O形圈-重型

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Diagram Pipe No. 1

5W-4939

Installation route: 小臂(附加装置)~工作装置

Length: 1,900 mm
Specification: DN16;6SH-10;42Mpa
Left fitting: 公制内螺纹24°锥带O形圈-重型
Right fitting: 公制内螺纹24°锥带O形圈-重型

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Diagram Pipe No. 14

8U-5875

Installation route: 推土铲手柄~分配阀后左下

Length: 2,156 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-4953

Installation route: 快速断开连接阀~分流器阀

Length: 800 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. 3

8U-7667

Installation route: 分流器阀~小臂接头总成

Length: 820 mm
Specification: DN19;4SP-12;35Mpa
Left fitting: 公制内螺纹24°锥带O形圈-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 1

8U-0672

Installation route: 大臂(附加装置)~过渡阀块(小臂上)

Length: 1,350 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

8U-5281

Installation route: 液压油散热器~回油阀块

Length: 1,726 mm
Specification: DN25;2SN-16;16.5Mpa
Left fitting: Light-series flangeOriginal Chinese: 法兰-轻型
Right fitting: 90° light-series flangeOriginal Chinese: 90°法兰-轻型

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Diagram Pipe No. 8

8U-4707

Installation route: 过渡阀块(小臂上)~堵头

Length: 1,900 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. 15

8U-6693

Installation route: 转向泵~堵油塞

Length: 814 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: 45°美制内螺纹平面密封

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Diagram Pipe No. 7

8U-5914

Installation route: 左支腿油缸~右支腿油缸

Length: 720 mm
Specification: DN10;6SH-6;42Mpa
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. 6

8U-5913

Installation route: 支腿油缸控制阀~接头总成(支腿油缸)

Length: 489 mm
Specification: DN10;6SH-6;42Mpa
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-4504

Installation route: 变速箱~变速箱

Length: 500 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: 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-5086

Installation route: 大臂(附加装置)~堵头

Length: 1,069 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. 8

8U-5915

Installation route: 左支腿油缸~支腿油缸控制阀

Length: 500 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-4704

Installation route: 过渡阀块(小臂)~堵头

Length: 1,800 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. 16

8U-0121

Installation route: 手动阀(大臂油缸右)~手动阀(大臂油缸右)

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. 13

8U-5867

Installation route: 歧管~阀块

Length: 2,896 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. 9

8U-1645

Installation route: 转速控制阀管路

Length: 1,251 mm
Specification: DN6;2SN-4;40Mpa
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. 29

8U-5761

Installation route: 过渡阀块(连接液压泵)

Length: 1,210 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. 13

8U-4701

Installation route: 推土铲手柄~分配阀前左下

Length: 1,997 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. 15

8U-5887

Installation route: 推土铲手柄~阀块

Length: 1,746 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-6692

Installation route: 转向泵~梭阀

Length: 369 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: American female thread, flat-face sealOriginal Chinese: 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®212B Attachments?

There are 8 published records. 8 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®212B Attachments?

Based on published records with valid lengths, the range is 800–2,156 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®212B Attachments?

The most frequent raw specifications in the current published records are: DN13;6SH-8;42Mpa (2 records), DN19;4SP-12;35Mpa (2 records), DN8;-5;17.5Mpa (2 records), DN16;6SH-10;42Mpa (1 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®212B Attachments?

Each record keeps the left and right fitting descriptions separate. Current examples: 8U-7090: left American female thread, flat-face seal; right American female thread, flat-face seal; 8U-5383: left American female thread, flat-face seal; right American female thread, flat-face seal; 8U-4150: left Heavy-series flange; right Heavy-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®212B Attachments hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 34 (8U-7090), Pipe No. 15 (8U-5383), Pipe No. 1 (8U-4150), Pipe No. 2 (5W-4940). Open a record to compare its installation position with the linked manual page.