Hydraulic line repair data

Caterpillar CAT®312E Attachments Hose List

Coverage details

Hoses: 6 records
Full specifications: 6 records
Systems: 1 systems
Length range: 2,500–6,260 mm

Current system

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 6

087-6583

Installation route: 右踏板~电磁阀(分配阀后下)

Length: 2,530 mm
Specification: DN10;-6;10.3Mpa
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

187-5669

Installation route: 左踏板~电磁阀(分配阀后下)

Length: 2,670 mm
Specification: DN10;-6;10.3Mpa
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. 4

7Y-4193

Installation route: 右踏板~电磁阀(分配阀后下)

Length: 2,500 mm
Specification: DN10;1SN-6;10.4Mpa
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

306-1233

Installation route: 大臂(前段)~大臂(后段)

Length: 4,918 mm
Specification: DN13;1SN-8;14Mpa
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

344-6276

Installation route: 大臂(前段)~大臂(后段)

Length: 6,260 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 12

302-3031

Installation route: 左踏板~控制阀(回转接头右)

Length: 2,580 mm
Specification: DN10;1SN-6;10.4Mpa
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

4I-5795

Installation route: 左踏板~左踏板

Length: 1,250 mm
Specification: DN10;1SN-6;10.4Mpa
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. 2

111-0976

Installation route: 推土铲手柄~进回油阀

Length: 1,580 mm
Specification: DN10;-6;10.3Mpa
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

4I-1671

Installation route: 减压阀(分配阀下)~过渡阀块(分配阀下)

Length: 370 mm
Specification: DN10;1SN-6;10.4Mpa
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. 3

139-1765

Installation route: 推土铲油缸~铁管(大臂下)

Length: 780 mm
Specification: DN16;4SP-10;28Mpa
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. 3

111-0976

Installation route: 推土铲手柄~控制阀(回转接头右)

Length: 1,580 mm
Specification: DN10;-6;10.3Mpa
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

347-1233

Installation route: 右踏板~进回油阀

Length: 430 mm
Specification: DN10;1SN-6;10.4Mpa
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

4I-1878

Installation route: 右踏板~进回油阀

Length: 1,380 mm
Specification: DN10;1SN-6;10.4Mpa
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. 8

356-9221

Installation route: 控制阀(回转接头右)~铁管(大臂下左)

Length: 410 mm
Specification: DN13;4SP-8;28Mpa
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

492-8432

Installation route: 小臂破碎器截止阀~铲斗

Length: 1,575 mm
Specification: DN10;2SN-6;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. 13

347-1233

Installation route: 右踏板~左踏板

Length: 430 mm
Specification: DN10;1SN-6;10.4Mpa
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

139-1762

Installation route: 推土铲油缸~铁管(大臂下)

Length: 760 mm
Specification: DN16;4SP-10;28Mpa
Left fitting: 45°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

354-4597

Installation route: 推土铲手柄~控制阀(回转接头右)

Length: 1,440 mm
Specification: DN10;-6;10.3Mpa
Left fitting: 45°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. 5

325-9054

Installation route: 铁管(大臂下左)~铁管(大臂)

Length: 900 mm
Specification: DN13;4SP-8;28Mpa
Left fitting: 45°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

4I-0800

Installation route: 右踏板~进回油阀

Length: 1,300 mm
Specification: DN10;1SN-6;10.4Mpa
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

108-7581

Installation route: 控制阀(回转接头右)~铁管(大臂下左)

Length: 500 mm
Specification: DN13;4SP-8;28Mpa
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®312E Attachments?

There are 6 published records. 6 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®312E Attachments?

Based on published records with valid lengths, the range is 2,500–6,260 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®312E Attachments?

The most frequent raw specifications in the current published records are: DN10;-6;10.3Mpa (2 records), DN10;1SN-6;10.4Mpa (2 records), DN10;6SH-6;42Mpa (1 records), DN13;1SN-8;14Mpa (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®312E Attachments?

Each record keeps the left and right fitting descriptions separate. Current examples: 087-6583: left American female thread, flat-face seal; right American female thread, flat-face seal; 187-5669: left American female thread, flat-face seal; right American female thread, flat-face seal; 7Y-4193: 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®312E Attachments hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 6 (087-6583), Pipe No. 8 (187-5669), Pipe No. 4 (7Y-4193), Pipe No. 3 (306-1233). Open a record to compare its installation position with the linked manual page.