Hydraulic line repair data

Caterpillar CAT®307-A Hose Repair Data

Coverage details
Hoses
47 records
Full specifications
47 records
Systems
10 systems
Length range
325–2,950 mm

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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. 41

108-7143

Installation route: 分配阀下~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
View full repair specifications

Diagram Pipe No. 3

4I-1419

Installation route: 蓄能器电磁阀(液压油箱后)~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
View full repair specifications

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
View full repair specifications

Diagram Pipe No. 1

107-1460

Installation route: Bucket cylinderOriginal Chinese: 铲斗油缸

Length
980 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
View full repair specifications

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
View full repair specifications

Diagram Pipe No. 38

108-7255

Installation route: 分配阀上~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
View full repair specifications

Diagram Pipe No. 17

108-9020

Installation route: 小臂油缸(分节油缸规格)

Length
2,950 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
View full repair specifications

Diagram Pipe No. 46

7I-0924

Installation route: 行走踏板~进回油阀

Length
500 mm
Specification
DN6;-4;10.3Mpa
Left fitting
美制内螺纹37°锥
Right fitting
美制内螺纹37°锥
View full repair specifications

Diagram Pipe No. 14

108-7159

Installation route: 回转接头~右行走马达

Length
1,450 mm
Specification
DN10;-6;10.3Mpa
Left fitting
美制内螺纹37°锥
Right fitting
美制内螺纹37°锥
View full repair specifications

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
View full repair specifications

Diagram Pipe No. 5

111-6694

Installation route: 回转马达~过渡阀块(回转接头前)

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
View full repair specifications

Diagram Pipe No. 29

108-7285

Installation route: 分配阀~蓄能器电磁阀(液压油箱后)

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
View full repair specifications

Diagram Pipe No. 10

108-7291

Installation route: 回转接头~左行走马达

Length
1,500 mm
Specification
DN6;-4;10.3Mpa
Left fitting
美制内螺纹37°锥
Right fitting
美制内螺纹37°锥
View full repair specifications

Diagram Pipe No. 52

7I-0921

Installation route: 中转接头~分配阀下

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
View full repair specifications

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
View full repair specifications

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
View full repair specifications

Diagram Pipe No. 24

107-1486

Installation route: 液压泵~控制阀(液压泵下)

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
View full repair specifications

Diagram Pipe No. 1

7I-0082

Installation route: 大臂(附加装置)~小臂(附加装置)

Length
970 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
View full repair specifications

Diagram Pipe No. 6

111-6518

Installation route: 大臂(附加装置)~分配阀前

Length
1,100 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
View full repair specifications

Diagram Pipe No. 1

7I-0079

Installation route: 大臂(附加装置)~小臂(附加装置)

Length
1,370 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
View full repair specifications

Diagram Pipe No. 54

108-7228

Installation route: 中转接头~分配阀上

Length
1,850 mm
Specification
DN6;-4;10.3Mpa
Left fitting
美制内螺纹37°锥
Right fitting
美制内螺纹37°锥
View full repair specifications

Diagram Pipe No. 55

108-7139

Installation route: 中转接头~分配阀下

Length
1,030 mm
Specification
DN6;-4;10.3Mpa
Left fitting
美制内螺纹37°锥
Right fitting
美制内螺纹37°锥
View full repair specifications

Diagram Pipe No. 76

108-7291

Installation route: 中转接头~分配阀后

Length
1,500 mm
Specification
DN6;-4;10.3Mpa
Left fitting
美制内螺纹37°锥
Right fitting
美制内螺纹37°锥
View full repair specifications

Diagram Pipe No. 57

108-7237

Installation route: 中转接头~分配阀上

Length
1,950 mm
Specification
DN6;-4;10.3Mpa
Left fitting
美制内螺纹37°锥
Right fitting
美制内螺纹37°锥
View full repair specifications

Diagram Pipe No. 49

4I-7678

Installation route: 液压油过滤器~过渡接头(液压泵右)

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
View full repair specifications

Diagram Pipe No. 33

108-7219

Installation route: 行走踏板~分配阀下

Length
1,800 mm
Specification
DN6;-4;10.3Mpa
Left fitting
美制内螺纹37°锥
Right fitting
美制内螺纹37°锥
View full repair specifications

Diagram Pipe No. 61

108-7267

Installation route: 液压泵~过渡接头(液压泵右)

Length
340 mm
Specification
DN6;-4;10.3Mpa
Left fitting
美制内螺纹37°锥
Right fitting
美制内螺纹37°锥
View full repair specifications

Diagram Pipe No. 8

108-9019

Installation route: 大臂(附加装置)~小臂(附加装置)

Length
2,230 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
View full repair specifications

Diagram Pipe No. 11

108-7562

Installation route: 大臂(附加装置)~过渡接头(回转马达右)

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
View full repair specifications

Diagram Pipe No. 10

108-7565

Installation route: 大臂(附加装置)~过渡接头(回转马达右)

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
View full repair specifications

Diagram Pipe No. 41

108-7143

Installation route: 回转马达~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
View full repair specifications

Diagram Pipe No. 7

111-6511

Installation route: 大臂(附加装置)~分配阀前

Length
860 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
View full repair specifications

Diagram Pipe No. 56

108-7234

Installation route: 中转接头~分配阀下

Length
1,400 mm
Specification
DN6;-4;10.3Mpa
Left fitting
美制内螺纹37°锥
Right fitting
美制内螺纹37°锥
View full repair specifications

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-A?

The current published data covers 10 systems and 47 hose records. Systems with more listed records include: Control Lever (10 hoses), Attachments (8 hoses), Control Valve (6 hoses), Boom Assembly (6 hoses), Swivel Joint (6 hoses), Hydraulic Pump (3 hoses).

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

Based on published records with valid lengths, the range is 325–2,950 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-A?

The most frequent raw specifications in the current published records are: DN6;-4;10.3Mpa (24 records), DN13;4SP-8;28Mpa (9 records), DN10;-6;10.3Mpa (5 records), DN16;4SP-10;28Mpa (4 records), DN13;1SN-8;14Mpa (3 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-A?

Each record keeps the left and right fitting descriptions separate. Current examples: 108-7143: left 美制内螺纹37°锥; right 美制内螺纹37°锥; 4I-1419: left 美制内螺纹37°锥; right 美制内螺纹37°锥; 107-1418: 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®307-A hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 41 (108-7143), Pipe No. 3 (4I-1419), Pipe No. 1 (107-1418), Pipe No. 1 (107-1460). Open a record to compare its installation position with the linked manual page.

Optional cross-check

Ask an AI search tool to check this repair data

The question is already written for this machine or hose. Use a tool with web search enabled; treat its answer as a starting point and verify on the machine.

See the exact question being sent
I am checking hydraulic hose repair information for "Caterpillar CAT®307-A 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-a--43415426233137343b3330372d41/

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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