Hydraulic line repair data

Caterpillar CAT®317B LN Hose Repair Data

Coverage details

Hoses: 82 records
Full specifications: 82 records
Systems: 14 systems
Length range: 370–5,450 mm

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AttachmentsAttachments – Quick CouplerControl ValveAttachments – Lock ValveBoom AssemblyControl LeverHydraulic PumpGrease LinesEngine Oil LinesHydraulic TankSolenoid ValveSupply and Return ValveAttachments – Breaker

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Hose repair details

Hose Length and Fitting List

Showing 36 representative records. Return to the finder for a more specific search.

Diagram Pipe No. 2

135-5732

Installation route: 机油管

Length: 1,120 mm
Specification: DN16;1SN-10;2.4Mpa
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. 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. 8

134-9137

Installation route: Arm-cylinder grease lineOriginal Chinese: 小臂油缸黄油管

Length: 3,050 mm
Specification: DN6;1SN-4;10.4Mpa
Left fitting: 美制锥形外螺纹30°内锥
Right fitting: 美制锥形外螺纹

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Diagram Pipe No. 14

120-7225

Installation route: Right boom-cylinder grease lineOriginal Chinese: 右大臂油缸黄油管

Length: 2,300 mm
Specification: DN6;-4;10.3Mpa
Left fitting: 美制锥形外螺纹30°内锥
Right fitting: 美制锥形外螺纹

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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. 4

129-6498

Installation route: 大臂(快换)~辅助阀(大臂上)

Length: 1,045 mm
Specification: DN25;4SP-16;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. 16

6Y-3290

Installation route: 阀块(右大臂油缸下部座销旁)

Length: 1,800 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. 2

107-1591

Installation route: 进回油阀~

Length: 3,500 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. 35

107-1594

Installation route: 分配阀~

Length: 2,150 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. 25

4I-5507

Installation route: 中转接头~分配阀上

Length: 2,480 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. 2

136-7694

Installation route: 快速联轴阀~分配阀前

Length: 1,495 mm
Specification: DN10;1SN-6;15.7Mpa
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. 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. 3

4I-3981

Installation route: 蓄能器电磁阀~

Length: 2,750 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: 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. 13

137-4678

Installation route: 过渡接头(大臂油缸锁止阀)

Length: 3,600 mm
Specification: DN10;1SN-6;15.7Mpa
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

7I-7117

Installation route: 踏板~分配阀上

Length: 3,250 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. 41

4I-6245

Installation route: 分配阀上~

Length: 2,400 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. 27

135-1246

Installation route: 分配阀右~

Length: 2,050 mm
Specification: DN6;-4;19.2Mpa
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. 6

121-2976

Installation route: 大臂快换管

Length: 5,450 mm
Specification: DN10;2SN-6;33Mpa
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. 10

138-3408

Installation route: 过渡接头(大臂油缸锁止阀)

Length: 2,500 mm
Specification: DN10;1SN-6;15.7Mpa
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. 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. 1

5T-4377

Installation route: 回转接头~行走马达(规格1)

Length: 2,000 mm
Specification: DN6;1SN-4;19.2Mpa
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. 9

206-6301

Installation route: 过渡阀块(回转马达左)~过渡阀块(大臂右侧)

Length: 1,780 mm
Specification: DN10;1SN-6;15.7Mpa
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

153-9856

Installation route: 小臂接头(快换)~小臂阀块(快换)

Length: 1,750 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. 6

207-2627

Installation route: 小臂油缸锁止阀

Length: 2,180 mm
Specification: DN10;2SN-6;33Mpa
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

172-5927

Installation route: 左小臂手动阀~

Length: 1,000 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: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 6

126-6053

Installation route: 小臂接头(快换)~快换装置

Length: 1,800 mm
Specification: DN6;2SN-4;40Mpa
Left fitting: 美制内螺纹37°锥
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

4I-1452

Installation route: 分配阀上~梭阀(驾驶室)

Length: 2,840 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. 5

142-1113

Installation route: 先导阀~手动阀

Length: 370 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. 1

7I-0178

Installation route: 进回油阀~

Length: 3,200 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. 1

160-4094

Installation route: 小臂油缸锁止阀

Length: 3,350 mm
Specification: DN19;1SN-12;8.7Mpa
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. 9

156-6691

Installation route: 大臂(破碎器)~过渡阀块(破碎器)

Length: 990 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: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 9

205-9859

Installation route: 分流器阀(大臂上)

Length: 1,115 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. 8

206-6299

Installation route: 过渡阀块(回转马达左)~过渡阀块(大臂左侧)

Length: 1,225 mm
Specification: DN10;1SN-6;15.7Mpa
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. 43

4I-6245

Installation route: 中转接头~分配阀下

Length: 2,400 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. 7

4I-8897

Installation route: 分配阀~回转马达(回油)

Length: 883 mm
Specification: DN19;1SN-12;8.7Mpa
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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Based on current published data

Common Repair Questions

Questions appear only when a published record or linked PDF page provides the answer.

Which systems and hoses are currently listed for Caterpillar CAT®317B LN?

The current published data covers 14 systems and 82 hose records. Systems with more listed records include: Attachments (14 hoses), Attachments – Quick Coupler (14 hoses), Control Valve (12 hoses), Attachments – Lock Valve (11 hoses), Boom Assembly (8 hoses), Control Lever (5 hoses).

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

Based on published records with valid lengths, the range is 370–5,450 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?

The most frequent raw specifications in the current published records are: DN10;-6;10.3Mpa (17 records), DN10;1SN-6;15.7Mpa (8 records), DN6;-4;10.3Mpa (8 records), DN6;2SN-4;40Mpa (6 records), DN10;2SN-6;33Mpa (5 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?

Each record keeps the left and right fitting descriptions separate. Current examples: 135-5732: left American female thread, flat-face seal; right American female thread, flat-face seal; 4E-5786: left Light-series flange; right American female thread, flat-face seal; 134-9137: left 美制锥形外螺纹30°内锥; right 美制锥形外螺纹. 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 hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 2 (135-5732), Pipe No. 7 (4E-5786), Pipe No. 8 (134-9137), Pipe No. 14 (120-7225). Open a record to compare its installation position with the linked manual page.

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I am checking hydraulic hose repair information for "Caterpillar CAT®317B LN Hose Repair Data". Use web search and cite a source for every factual point. Compare this HoseSeek page with manufacturer manuals and reliable parts documentation: https://www.hoseseek.com/machines/caterpillar/cat-174-317b-ln--43415426233137343b33313742204c4e/

Verify, where applicable:
1. Exact machine model and any serial-number range.
2. Hydraulic system and installation route.
3. Hose part number and diagram pipe number.
4. Finished length, hose specification, and pressure rating.
5. Both end fittings, including thread, sealing seat, size, and angle.
6. Installation-diagram position and routing.

State explicitly what you could not verify. Do not infer a missing dimension or fitting. End with a short on-machine checklist for a hose repair technician.

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Hose Length and Fitting List

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