Hydraulic line repair data

Caterpillar CAT®317B LN Boom Assembly Hose List

Coverage details

Hoses: 8 records
Full specifications: 8 records
Systems: 1 systems
Length range: 700–1,210 mm

Current system

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 7

4E-5786

Installation route: 铲斗油缸~小臂接头(铲斗油缸右)

Length: 870 mm
Specification: DN19;4SP-12;28Mpa
Left fitting: Light-series flangeOriginal Chinese: 法兰-轻型
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

4I-1077

Installation route: 大臂左4

Length: 1,150 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. 30

119-2763

Installation route: 大臂左2

Length: 1,210 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 11

4I-5648

Installation route: 大臂左1

Length: 1,150 mm
Specification: DN25;4SP-16;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. 5

4I-3823

Installation route: Arm cylinder — leftOriginal Chinese: 小臂油缸左

Length: 980 mm
Specification: DN25;6SH-16;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. 1

160-4086

Installation route: 大臂油缸

Length: 700 mm
Specification: DN16;6SH-10;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. 29

115-8770

Installation route: 大臂左3

Length: 1,210 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. 6

4I-3820

Installation route: Arm cylinder — rightOriginal Chinese: 小臂油缸右

Length: 950 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 3

206-4450

Installation route: 分节油缸

Length: 896 mm
Specification: DN19;4SP-12;35Mpa
Left fitting: 45°美制内螺纹平面密封
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 6

206-4428

Installation route: 铲斗油缸(后段)

Length: 1,280 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: 45°美制内螺纹平面密封

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Diagram Pipe No. 4

206-4451

Installation route: 分节油缸

Length: 1,105 mm
Specification: DN19;6SH-12;42Mpa
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

5I-4494

Installation route: 铲斗油缸右

Length: 1,550 mm
Specification: DN19;6SH-12;42Mpa
Left fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型
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

216-3823

Installation route: 小臂油缸右(分节油缸规格)

Length: 1,525 mm
Specification: DN25;6SH-16;42Mpa
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. 7

206-4429

Installation route: 小臂油缸左(分节油缸规格)

Length: 1,545 mm
Specification: DN19;4SP-12;35Mpa
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-8785

Installation route: Bucket cylinderOriginal Chinese: 铲斗油缸

Length: 1,400 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° heavy-series flangeOriginal Chinese: 90°法兰-重型

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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®317B LN Boom Assembly?

There are 8 published records. 8 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®317B LN Boom Assembly?

Based on published records with valid lengths, the range is 700–1,210 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®317B LN Boom Assembly?

The most frequent raw specifications in the current published records are: DN19;4SP-12;35Mpa (2 records), DN19;6SH-12;42Mpa (2 records), DN16;6SH-10;42Mpa (1 records), DN19;4SP-12;28Mpa (1 records), DN25;4SP-16;35Mpa (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®317B LN Boom Assembly?

Each record keeps the left and right fitting descriptions separate. Current examples: 4E-5786: left Light-series flange; right American female thread, flat-face seal; 4I-1077: left American female thread, flat-face seal; right American female thread, flat-face seal; 119-2763: 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®317B LN Boom Assembly hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 7 (4E-5786), Pipe No. 15 (4I-1077), Pipe No. 30 (119-2763), Pipe No. 11 (4I-5648). Open a record to compare its installation position with the linked manual page.