Hydraulic line repair data

Caterpillar CAT®311F LRR Attachments – Quick Coupler Hose List

Coverage details

Hoses: 3 records
Full specifications: 3 records
Systems: 1 systems
Length range: 1,240–3,120 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.

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 28

461-3651

Installation route: 大臂(快换)~快速联轴阀

Length: 3,120 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. 4

302-9513

Installation route: 大臂(快换)~小臂(快换)

Length: 1,240 mm
Specification: DN13;6SH-8;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. 2

382-7079

Installation route: 大臂(快换)~小臂(快换)

Length: 1,580 mm
Specification: DN13;6SH-8;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. 11

444-1339

Installation route: 快速联轴阀~分配阀

Length: 510 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. 15

325-8842

Installation route: 快速联轴阀~液压油箱

Length: 330 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. 24

460-5532

Installation route: 快速联轴阀~单向阀(液压油箱左前)

Length: 250 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 26

461-3644

Installation route: 快速联轴阀~液压泵

Length: 1,395 mm
Specification: DN10;6SH-6;42Mpa
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. 14

320-0042

Installation route: 快速联轴阀~液压油箱

Length: 340 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: 45°美制内螺纹平面密封

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Diagram Pipe No. 27

461-3648

Installation route: 快速联轴阀~单向阀(液压油箱左前)

Length: 310 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 11

275-1497

Installation route: 快速联轴阀~分配阀

Length: 520 mm
Specification: DN10;6SH-6;42Mpa
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

354-3739

Installation route: 快速联轴阀~液压油箱

Length: 3,110 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. 10

444-1327

Installation route: 大臂(快换)~快速联轴阀

Length: 2,310 mm
Specification: DN6;2SN-4;40Mpa
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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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®311F LRR Attachments – Quick Coupler?

There are 3 published records. 3 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®311F LRR Attachments – Quick Coupler?

Based on published records with valid lengths, the range is 1,240–3,120 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®311F LRR Attachments – Quick Coupler?

The most frequent raw specifications in the current published records are: DN13;6SH-8;42Mpa (2 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®311F LRR Attachments – Quick Coupler?

Each record keeps the left and right fitting descriptions separate. Current examples: 461-3651: left American female thread, flat-face seal; right American female thread, flat-face seal; 302-9513: left American female thread, flat-face seal; right American female thread, flat-face seal; 382-7079: 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®311F LRR Attachments – Quick Coupler hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 28 (461-3651), Pipe No. 4 (302-9513), Pipe No. 2 (382-7079). Open a record to compare its installation position with the linked manual page.