Hydraulic line repair data

Caterpillar CAT®312-A Swivel Joint Hose List

Coverage details

Hoses: 5 records
Full specifications: 5 records
Systems: 1 systems
Length range: 860–2,000 mm

Current system

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 30

7I-0175

Installation route: Swivel joint → travel motorOriginal Chinese: 回转接头~行走马达

Length: 1,800 mm
Specification: DN10;-6;10.3Mpa
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. 2

112-9489

Installation route: 回转接头~分配阀前(规格1)

Length: 970 mm
Specification: DN19;4SP-12;35Mpa
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. 32

7I-0918

Installation route: 回转接头~蓄能器电磁阀(液压油箱后)

Length: 2,000 mm
Specification: DN6;-4;10.3Mpa
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. 32

7I-0918

Installation route: 回转接头~

Length: 2,000 mm
Specification: DN6;-4;10.3Mpa
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. 4

112-9487

Installation route: 回转接头~分配阀前(规格1)

Length: 860 mm
Specification: DN19;4SP-12;35Mpa
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

107-1651

Installation route: 回转接头~分配阀前(规格2)

Length: 690 mm
Specification: DN19;4SP-12;35Mpa
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

112-9488

Installation route: 回转接头~分配阀前(规格1)

Length: 920 mm
Specification: DN19;4SP-12;35Mpa
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. 25

7I-1303

Installation route: 回转接头~行走马达(规格1)

Length: 1,700 mm
Specification: DN19;6SH-12;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. 1

114-9351

Installation route: 回转接头~分配阀前(规格1)

Length: 985 mm
Specification: DN19;4SP-12;35Mpa
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. 29

4I-1434

Installation route: 回转接头~行走马达(规格1)

Length: 1,780 mm
Specification: DN10;-6;10.3Mpa
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. 3

107-1643

Installation route: 回转接头~分配阀前(规格2)

Length: 730 mm
Specification: DN19;4SP-12;35Mpa
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. 1

104-8878

Installation route: 回转接头~分配阀前(规格2)

Length: 910 mm
Specification: DN19;4SP-12;35Mpa
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. 2

107-1647

Installation route: 回转接头~分配阀前(规格2)

Length: 880 mm
Specification: DN19;4SP-12;35Mpa
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®312-A Swivel Joint?

There are 5 published records. 5 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®312-A Swivel Joint?

Based on published records with valid lengths, the range is 860–2,000 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®312-A Swivel Joint?

The most frequent raw specifications in the current published records are: DN19;4SP-12;35Mpa (2 records), DN6;-4;10.3Mpa (2 records), DN10;-6;10.3Mpa (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®312-A Swivel Joint?

Each record keeps the left and right fitting descriptions separate. Current examples: 7I-0175: left 美制内螺纹37°锥; right 美制内螺纹37°锥; 112-9489: left American female thread, flat-face seal; right American female thread, flat-face seal; 7I-0918: 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®312-A Swivel Joint hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 30 (7I-0175), Pipe No. 2 (112-9489), Pipe No. 32 (7I-0918), Pipe No. 32 (7I-0918). Open a record to compare its installation position with the linked manual page.