Hydraulic line repair data

Caterpillar CAT®317B LN Hydraulic Pump Hose List

Coverage details

Hoses: 4 records
Full specifications: 4 records
Systems: 1 systems
Length range: 550–2,815 mm

Current system

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 91

7I-0184

Installation route: 液压泵~

Length: 550 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. 31

121-1344

Installation route: 液压泵~

Length: 2,815 mm
Specification: DN10;4SP-6;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. 30

121-6317

Installation route: 液压泵右~铁管(液压泵下)

Length: 680 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. 19

135-1097

Installation route: 液压泵~

Length: 850 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. 47

150-8980

Installation route: 液压泵右~分配阀后

Length: 990 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: 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

142-1176

Installation route: 液压泵右~分配阀后

Length: 880 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: 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

135-1251

Installation route: 液压泵左~液压吸油铁管

Length: 873 mm
Specification: DN25;1SN-16;7Mpa
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. 22

151-0019

Installation route: 液压泵~回油阀块(液压油箱)

Length: 700 mm
Specification: DN32;1SN-20;4.3Mpa
Left fitting: 90° light-series flangeOriginal Chinese: 90°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. 2

142-1180

Installation route: 液压泵右~分配阀后

Length: 930 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: 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. 8

151-2054

Installation route: 液压泵右~分配阀右

Length: 1,450 mm
Specification: DN16;4SP-10;28Mpa
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. 4

156-4953

Installation route: 液压泵~控制阀(分配阀右)

Length: 1,900 mm
Specification: DN16;4SP-10;28Mpa
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. 18

131-9869

Installation route: 液压泵~

Length: 482 mm
Specification: DN19;1SN-12;8.7Mpa
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®317B LN Hydraulic Pump?

There are 4 published records. 4 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 Hydraulic Pump?

Based on published records with valid lengths, the range is 550–2,815 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 Hydraulic Pump?

The most frequent raw specifications in the current published records are: DN10;-6;10.3Mpa (1 records), DN10;4SP-6;28Mpa (1 records), DN16;6SH-10;42Mpa (1 records), DN6;-4;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®317B LN Hydraulic Pump?

Each record keeps the left and right fitting descriptions separate. Current examples: 7I-0184: left 美制内螺纹37°锥; right 美制内螺纹37°锥; 121-1344: left American female thread, flat-face seal; right American female thread, flat-face seal; 121-6317: 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 Hydraulic Pump hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 91 (7I-0184), Pipe No. 31 (121-1344), Pipe No. 30 (121-6317), Pipe No. 19 (135-1097). Open a record to compare its installation position with the linked manual page.