Hydraulic line repair data

Caterpillar CAT®318E L Hose Repair Data

Coverage details

Hoses: 57 records
Full specifications: 57 records
Systems: 13 systems
Length range: 400–6,260 mm

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Attachments – Lock ValveControl ValveAttachments – Quick CouplerGrease LinesAttachmentsControl LeverAttachments – BreakerBoom AssemblySwivel JointHydraulic PumpPedal

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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. 5

252-3030

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

Length: 2,250 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. 10

4I-6248

Installation route: 回转马达~

Length: 940 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 5

373-9966

Installation route: Swivel joint → travel motorOriginal Chinese: 回转接头~行走马达

Length: 2,320 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 2

371-0140

Installation route: 大臂前段(快换)~大臂后段(快换)

Length: 1,250 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. 12

361-8969

Installation route: 液压泵上~控制阀(回转马达前)

Length: 2,030 mm
Specification: DN16;4SP-10;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. 4

4I-1031

Installation route: 分配阀上~

Length: 500 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 33

184-9156

Installation route: 分配阀下~

Length: 1,830 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. 3

184-9543

Installation route: 大臂油缸

Length: 690 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. 18

350-0833

Installation route: 液压泵~液压油过滤器

Length: 410 mm
Specification: DN13;1SN-8;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. 16

104-8771

Installation route: 中转接头~分配阀上

Length: 2,430 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. 8

370-0297

Installation route: 分节油缸锁止阀

Length: 1,510 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. 2

212-5149

Installation route: 小臂油缸锁止阀

Length: 3,400 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 6

108-7203

Installation route: 分配阀下~过渡接头(驾驶室)

Length: 2,600 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 5

294-3851

Installation route: 大臂油缸黄油管

Length: 1,340 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. 1

7I-8249

Installation route: Swivel joint → travel motorOriginal Chinese: 回转接头~行走马达

Length: 1,950 mm
Specification: DN13;-8;10.3Mpa
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

4I-5556

Installation route: 小臂破碎器截止阀左

Length: 1,550 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. 2

237-3227

Installation route: 小臂破碎器截止阀左

Length: 1,350 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

173-7865

Installation route: 大臂(附加装置)~小臂(附加装置)

Length: 1,540 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. 1

363-2569

Installation route: 大臂(快换)~小臂(快换)

Length: 1,800 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. 9

344-6276

Installation route: 大臂(快换)~大臂接头(快换)

Length: 6,260 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 6

364-4992

Installation route: 分节油缸黄油管

Length: 650 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. 1

371-0139

Installation route: 大臂前段(快换)~大臂后段(快换)

Length: 1,210 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. 22

087-5758

Installation route: 分配阀上~

Length: 550 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: 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-6248

Installation route: 分配阀~

Length: 940 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 3

277-0917

Installation route: 小臂破碎器截止阀左

Length: 1,900 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. 8

353-0687

Installation route: 大臂油缸锁止阀~分配阀前

Length: 2,720 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. 4

7Y-2920

Installation route: 铲斗油缸黄油管

Length: 1,100 mm
Specification: DN6;-4;19.2Mpa
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. 18

187-5669

Installation route: 行走踏板~分配阀

Length: 2,670 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 1

108-7562

Installation route: 大臂前段(附加装置)~大臂后段(附加装置)

Length: 1,100 mm
Specification: DN16;4SP-10;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

4I-6391

Installation route: 分配阀下~四联电磁(分配阀下)

Length: 650 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. 8

087-4503

Installation route: 分配阀下~四联电磁(分配阀下)

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

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Diagram Pipe No. 2

210-9966

Installation route: 大臂(快换)~小臂(快换)

Length: 1,500 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. 6

204-8543

Installation route: 中转接头~模式转换器(驾驶室)

Length: 630 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 2

141-3538

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

Length: 2,970 mm
Specification: DN6;1SN-04;22.5MPa
Left fitting: 英制内螺纹60°内锥
Right fitting: 英制锥形外螺纹

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Diagram Pipe No. 1

177-8407

Installation route: 大臂(快换)~小臂(快换)

Length: 1,540 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. 3

173-7864

Installation route: 大臂(附加装置)~小臂(附加装置)

Length: 1,800 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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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®318E L?

The current published data covers 13 systems and 57 hose records. Systems with more listed records include: Attachments – Lock Valve (10 hoses), Control Valve (8 hoses), Attachments – Quick Coupler (8 hoses), Grease Lines (7 hoses), Attachments (6 hoses), Control Lever (4 hoses).

What is the hose length range for Caterpillar CAT®318E L?

Based on published records with valid lengths, the range is 400–6,260 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®318E L?

The most frequent raw specifications in the current published records are: DN10;-6;10.3Mpa (14 records), DN10;1SN-6;10.4Mpa (10 records), DN13;6SH-8;42Mpa (7 records), DN19;6SH-12;42Mpa (5 records), DN6;-4;10.3Mpa (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®318E L?

Each record keeps the left and right fitting descriptions separate. Current examples: 252-3030: left 美制锥形外螺纹30°内锥; right 美制锥形外螺纹; 4I-6248: left American female thread, flat-face seal; right American female thread, flat-face seal; 373-9966: 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®318E L hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 5 (252-3030), Pipe No. 10 (4I-6248), Pipe No. 5 (373-9966), Pipe No. 2 (371-0140). 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®318E L 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-174-318e-l--43415426233137343b33313845204c/

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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