Hydraulic line repair data

Caterpillar CAT®312D L Supply and Return Valve Hose List

Coverage details

Hoses: 2 records
Full specifications: 2 records
Systems: 1 systems
Length range: 320–410 mm

Current system

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Use the number on the diagram, a part number, connection point, length, hose size, or fitting.

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 24

314-8199

Installation route: 进回油阀~电磁阀(驾驶室右)

Length: 410 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. 15

176-4768

Installation route: 进回油阀~电磁阀(驾驶室左)

Length: 320 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. 60

317-4846

Installation route: 进回油阀~蓄能器电磁阀(液压泵后下)

Length: 3,620 mm
Specification: DN13;1SN-8;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. 1

4I-5795

Installation route: 进回油阀~电磁阀(驾驶室左)

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. 26

129-5959

Installation route: 进回油阀~蓄能器电磁阀(液压泵后下)

Length: 3,000 mm
Specification: DN13;1SN-8;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

207-6418

Installation route: 进回油阀~先导阀(驾驶室)

Length: 550 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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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®312D L Supply and Return Valve?

There are 2 published records. 2 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®312D L Supply and Return Valve?

Based on published records with valid lengths, the range is 320–410 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®312D L Supply and Return Valve?

The most frequent raw specifications in the current published records are: DN10;-6;10.3Mpa (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®312D L Supply and Return Valve?

Each record keeps the left and right fitting descriptions separate. Current examples: 314-8199: left American female thread, flat-face seal; right American female thread, flat-face seal; 176-4768: 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®312D L Supply and Return Valve hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 24 (314-8199), Pipe No. 15 (176-4768). Open a record to compare its installation position with the linked manual page.