Hydraulic line repair data

Caterpillar CAT®311C Hose Repair Data

Coverage details
Hoses
49 records
Full specifications
49 records
Systems
11 systems
Length range
390–4,300 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. 37

196-0634

Installation route: 回油阀块(液压油箱前)~液压油散热器

Length
505 mm
Specification
DN32;1SN-20;4.3Mpa
Left fitting
Light-series flangeOriginal Chinese: 法兰-轻型
Right fitting
Light-series flangeOriginal Chinese: 法兰-轻型
View full repair specifications

Diagram Pipe No. 20

087-6582

Installation route: 行走踏板~中转接头(踏板)

Length
400 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
View full repair specifications

Diagram Pipe No. 3

210-9966

Installation route: 大臂(附加装置)~小臂(附加装置)

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
View full repair specifications

Diagram Pipe No. 9

131-9778

Installation route: 小臂油缸

Length
590 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
View full repair specifications

Diagram Pipe No. 1

4I-3514

Installation route: 右踏板~分配阀下

Length
4,150 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
View full repair specifications

Diagram Pipe No. 5

223-8666

Installation route: 小臂油缸锁止阀~分配阀

Length
2,000 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
View full repair specifications

Diagram Pipe No. 15

4I-3511

Installation route: 分配阀下~

Length
3,350 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
View full repair specifications

Diagram Pipe No. 23

104-8774

Installation route: 手动阀(液压油箱左)~

Length
2,200 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
View full repair specifications

Diagram Pipe No. 1

4I-1031

Installation route: 分配阀下~手动阀(液压油箱左)

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
View full repair specifications

Diagram Pipe No. 9

187-5877

Installation route: 左踏板~

Length
2,000 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
View full repair specifications

Diagram Pipe No. 3

4I-5811

Installation route: 控制阀(回转马达左)

Length
2,006 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
View full repair specifications

Diagram Pipe No. 4

187-9926

Installation route: 左踏板~分配阀下

Length
3,700 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
View full repair specifications

Diagram Pipe No. 22

207-7785

Installation route: Left boom-cylinder lock valve → right boom-cylinder lock valveOriginal Chinese: 左大臂油缸锁止阀~右大臂油缸锁止阀

Length
1,800 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
View full repair specifications

Diagram Pipe No. 5

177-8572

Installation route: 大臂(快换)~小臂(快换)

Length
1,700 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
View full repair specifications

Diagram Pipe No. 5

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
View full repair specifications

Diagram Pipe No. 22

4I-0772

Installation route: 分配阀上~

Length
3,550 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
View full repair specifications

Diagram Pipe No. 1

187-5629

Installation route: 液压泵上~分配阀右

Length
2,200 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
View full repair specifications

Diagram Pipe No. 21

4I-6136

Installation route: 右踏板~中转接头(踏板)

Length
1,500 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
View full repair specifications

Diagram Pipe No. 5

212-5419

Installation route: 左踏板~分配阀上

Length
4,300 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
View full repair specifications

Diagram Pipe No. 1

4I-5900

Installation route: 安全阀(大臂上)~单向阀(大臂上)

Length
900 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
View full repair specifications

Diagram Pipe No. 17

194-0377

Installation route: 液压泵上~分配阀右

Length
2,100 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
View full repair specifications

Diagram Pipe No. 3

177-8659

Installation route: 大臂(附加装置)~小臂(附加装置)

Length
1,350 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
View full repair specifications

Diagram Pipe No. 11

108-9097

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

Length
1,520 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
View full repair specifications

Diagram Pipe No. 19

4I-1880

Installation route: 行走踏板~中转接头(踏板)

Length
390 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
View full repair specifications

Diagram Pipe No. 4

123-2636

Installation route: 大臂油缸

Length
760 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
View full repair specifications

Diagram Pipe No. 33

196-0634

Installation route: 回油阀块(液压油箱前)~铁管(连液压油散热器)

Length
505 mm
Specification
DN32;1SN-20;4.3Mpa
Left fitting
Light-series flangeOriginal Chinese: 法兰-轻型
Right fitting
Light-series flangeOriginal Chinese: 法兰-轻型
View full repair specifications

Diagram Pipe No. 2

104-8774

Installation route: 分配阀上~手动阀(液压油箱左)

Length
2,200 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
View full repair specifications

Diagram Pipe No. 2

177-8659

Installation route: 大臂(附加装置)~小臂(附加装置)

Length
1,350 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
View full repair specifications

Diagram Pipe No. 1

087-5760

Installation route: 分配阀上~分配阀下

Length
1,030 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
View full repair specifications

Diagram Pipe No. 4

7Y-4199

Installation route: 控制阀(分配阀右)~过渡阀块(分配阀下右)

Length
1,800 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
View full repair specifications

Diagram Pipe No. 1

087-5760

Installation route: 分配阀上~分配阀下

Length
1,030 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
View full repair specifications

Diagram Pipe No. 3

123-5349

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

Length
2,400 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
View full repair specifications

Diagram Pipe No. 21

087-6584

Installation route: 分配阀上~

Length
3,200 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
View full repair specifications

Diagram Pipe No. 24

354-8748

Installation route: 大臂(快换)~快速联轴阀

Length
2,945 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
View full repair specifications

Diagram Pipe No. 5

104-8774

Installation route: 左踏板~手动阀(液压油箱左)

Length
2,200 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
View full repair specifications

Diagram Pipe No. 14

087-6584

Installation route: 分配阀下~

Length
3,200 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
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®311C?

The current published data covers 11 systems and 49 hose records. Systems with more listed records include: Attachments (16 hoses), Control Valve (11 hoses), Attachments – Lock Valve (4 hoses), Grease Lines (4 hoses), Boom Assembly (3 hoses), Attachments – Quick Coupler (3 hoses).

What is the hose length range for Caterpillar CAT®311C?

Based on published records with valid lengths, the range is 390–4,300 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®311C?

The most frequent raw specifications in the current published records are: DN10;-6;10.3Mpa (15 records), DN10;1SN-6;10.4Mpa (11 records), DN13;6SH-8;42Mpa (6 records), DN19;1SN-12;8.7Mpa (3 records), DN19;6SH-12;42Mpa (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®311C?

Each record keeps the left and right fitting descriptions separate. Current examples: 196-0634: left Light-series flange; right Light-series flange; 087-6582: left American female thread, flat-face seal; right American female thread, flat-face seal; 210-9966: 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®311C hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 37 (196-0634), Pipe No. 20 (087-6582), Pipe No. 3 (210-9966), Pipe No. 9 (131-9778). Open a record to compare its installation position with the linked manual page.

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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.

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I am checking hydraulic hose repair information for "Caterpillar CAT®311C 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-174-311c--43415426233137343b33313143/

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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