Hydraulic line repair data

Caterpillar CAT®307 Hose Repair Data

Coverage details

Hoses: 26 records
Full specifications: 26 records
Systems: 10 systems
Length range: 325–2,700 mm

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Control ValveAttachmentsHydraulic PumpSolenoid ValveBoom AssemblyPedal

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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

111-6694

Installation route: 回转马达~过渡接头(回转接头右前)

Length: 498 mm
Specification: DN13;1SN-8;14Mpa
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

125-1790

Installation route: 蓄能器电磁阀(液压油箱后)~控制阀(液压泵下)

Length: 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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Diagram Pipe No. 20

7I-0921

Installation route: 液压泵后~电磁阀(液压油箱后)

Length: 1,200 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. 23

136-5827

Installation route: 大臂(附加装置)~分配阀前

Length: 1,020 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

6I-6755

Installation route: 行走踏板~进回油阀

Length: 700 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. 10

111-6505

Installation route: 分配阀上~电磁阀(液压油箱后)

Length: 2,300 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. 6

111-6502

Installation route: 行走踏板~分配阀

Length: 1,650 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. 16

108-7282

Installation route: 分配阀上~分配阀下

Length: 900 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. 7

108-7276

Installation route: 回转接头~回转马达(回油)

Length: 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. 10

111-6505

Installation route: 右踏板~分配阀上

Length: 2,300 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. 4

125-1790

Installation route: 液压泵~蓄能器电磁阀(液压油箱后)

Length: 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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Diagram Pipe No. 7

111-6697

Installation route: 大臂油缸锁止阀~回转接头

Length: 1,251 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. 20

107-1434

Installation route: 分配阀前~分配阀前

Length: 620 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

107-1418

Installation route: 大臂油缸

Length: 760 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. 82

103-1345

Installation route: 分配阀前~手动阀(液压泵右)

Length: 1,400 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. 29

108-7285

Installation route: 分配阀上~分配阀上

Length: 440 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. 48

107-1486

Installation route: 液压泵吸油铁管~

Length: 325 mm
Specification: DN13;1SN-8;14Mpa
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-7678

Installation route: 液压油过滤器~梭阀(液压泵上)

Length: 850 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-1419

Installation route: 液压泵吸油铁管~进回油阀

Length: 2,360 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. 73

108-7143

Installation route: 蓄能器电磁阀(液压油箱后)~

Length: 1,120 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. 4

111-6691

Installation route: 大臂(附加装置)~过渡接头(回转接头右前)

Length: 759 mm
Specification: DN13;1SN-8;14Mpa
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

108-7255

Installation route: 分配阀后~蓄能器电磁阀(液压油箱后)

Length: 800 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. 24

108-7565

Installation route: 大臂(附加装置)~分配阀前

Length: 860 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. 19

5T-4381

Installation route: 右踏板~电磁阀(液压油箱后)

Length: 2,700 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. 59

4I-1419

Installation route: 蓄能器电磁阀(液压油箱后)~

Length: 2,360 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. 6

107-1457

Installation route: 小臂油缸

Length: 570 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. 14

7I-0942

Installation route: 分配阀下~手动阀(分配阀右前)

Length: 1,000 mm
Specification: DN6;-4;10.3Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 5

108-7288

Installation route: 行走踏板~进回油阀

Length: 650 mm
Specification: DN6;-4;10.3Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 35

107-1519

Installation route: 控制阀(液压泵下)

Length: 404 mm
Specification: DN16;1SN-10;10.5Mpa
Left fitting: 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°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. 26

107-1451

Installation route: 过渡阀块(分配阀右)~铁管

Length: 501 mm
Specification: DN25;1SN-16;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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Diagram Pipe No. 46

108-7135

Installation route: 分配阀前~回转马达

Length: 400 mm
Specification: DN6;-4;10.3Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 10

107-1454

Installation route: 回转马达~过渡阀块(分配阀右)

Length: 522 mm
Specification: DN13;1SN-8;14Mpa
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. 62

108-7151

Installation route: 分配阀前~梭阀(分配阀旁)

Length: 2,100 mm
Specification: DN6;-4;10.3Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 17

7I-0942

Installation route: 分配阀上~分配阀下

Length: 1,000 mm
Specification: DN6;-4;10.3Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 4

108-7195

Installation route: 分配阀上~蓄能器电磁阀(液压油箱后)

Length: 1,050 mm
Specification: DN6;-4;10.3Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 35

108-7258

Installation route: 分配阀上~蓄能器电磁阀(液压油箱后)

Length: 850 mm
Specification: DN6;-4;10.3Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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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®307?

The current published data covers 10 systems and 26 hose records. Systems with more listed records include: Control Valve (6 hoses), Attachments (5 hoses), Hydraulic Pump (4 hoses), Solenoid Valve (3 hoses), Boom Assembly (2 hoses), Pedal (2 hoses).

What is the hose length range for Caterpillar CAT®307?

Based on published records with valid lengths, the range is 325–2,700 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®307?

The most frequent raw specifications in the current published records are: DN6;-4;10.3Mpa (9 records), DN13;4SP-8;28Mpa (5 records), DN10;-6;10.3Mpa (4 records), DN13;1SN-8;14Mpa (3 records), DN16;4SP-10;28Mpa (2 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Caterpillar CAT®307?

Each record keeps the left and right fitting descriptions separate. Current examples: 111-6694: left American female thread, flat-face seal; right American female thread, flat-face seal; 125-1790: left American female thread, flat-face seal; right American female thread, flat-face seal; 7I-0921: left 美制内螺纹37°锥; right 美制内螺纹37°锥. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Caterpillar CAT®307 hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 5 (111-6694), Pipe No. 4 (125-1790), Pipe No. 20 (7I-0921), Pipe No. 23 (136-5827). 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®307 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-174-307--43415426233137343b333037/

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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