Hydraulic line repair data

Caterpillar CAT®312D2 L Attachments Hose List

Coverage details

Hoses: 2 records
Full specifications: 2 records
Systems: 1 systems
Length range: 1,450–1,850 mm

Current system

Find a hose in this system

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

Pipe number, part number, route, length, or fittingSearch another machine

Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 8

288-7709

Installation route: 大臂(附加装置)~小臂(附加装置)

Length: 1,850 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 8

288-7723

Installation route: 大臂(附加装置)~小臂(附加装置)

Length: 1,450 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 3

087-5767

Installation route: 右踏板~进回油阀

Length: 700 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

087-4531

Installation route: 右踏板~进回油阀

Length: 600 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®312D2 L Attachments?

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®312D2 L Attachments?

Based on published records with valid lengths, the range is 1,450–1,850 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®312D2 L Attachments?

The most frequent raw specifications in the current published records are: DN13;4SP-8;28Mpa (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®312D2 L Attachments?

Each record keeps the left and right fitting descriptions separate. Current examples: 288-7709: left American female thread, flat-face seal; right American female thread, flat-face seal; 288-7723: 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®312D2 L Attachments hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 8 (288-7709), Pipe No. 8 (288-7723). Open a record to compare its installation position with the linked manual page.