Hydraulic line repair data

Caterpillar CAT®312B L Attachments Hose List

Coverage details

Hoses: 18 records
Full specifications: 18 records
Systems: 1 systems
Length range: 700–5,300 mm

Current system

Find a hose in this system

Use the number on the diagram, a part number, connection point, length, hose size, or fitting.

Pipe number, part number, route, length, or fittingSearch another machine

Hose repair details

Hose Length and Fitting List

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

Diagram Pipe No. 8

4I-1452

Installation route: 右踏板~分配阀上

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

View full repair specifications

Diagram Pipe No. 13

197-8202

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

Length: 1,350 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

View full repair specifications

Diagram Pipe No. 7

202-0448

Installation route: 过渡阀块(回转接头左)~过渡阀块(分节油缸右)

Length: 2,225 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

View full repair specifications

Diagram Pipe No. 7

191-8268

Installation route: 大臂(附加装置)~分配阀前

Length: 965 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

View full repair specifications

Diagram Pipe No. 7

161-0004

Installation route: 大臂(附加装置)~分配阀前

Length: 1,050 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. 12

197-8201

Installation route: 大臂后段附加装置管

Length: 2,105 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

View full repair specifications

Diagram Pipe No. 4

129-6498

Installation route: 手动阀(大臂上)~大臂前段铁管

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

View full repair specifications

Diagram Pipe No. 6

160-9993

Installation route: 大臂(附加装置)~分配阀前

Length: 1,500 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. 6

202-0447

Installation route: 过渡阀块(回转接头左)~过渡阀块(分节油缸左)

Length: 1,235 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. 8

119-4191

Installation route: 大臂附加装置管

Length: 4,700 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

View full repair specifications

Diagram Pipe No. 9

4I-6233

Installation route: 右踏板~分配阀下

Length: 2,650 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. 2

135-1262

Installation route: 液压油散热器~单向阀(分配阀后)

Length: 1,137 mm
Specification: DN25;1SN-16;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. 5

142-1238

Installation route: 大臂(附加装置)~过渡阀块(附加装置)

Length: 930 mm
Specification: DN25;1SN-16;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. 16

191-8269

Installation route: 过渡阀块(附加装置)~过渡接头(大臂侧)

Length: 975 mm
Specification: DN25;1SN-16;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. 5

118-2766

Installation route: 大臂附加装置管

Length: 5,300 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

View full repair specifications

Diagram Pipe No. 2

8E-0081

Installation route: 大臂后段附加装置管

Length: 1,810 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. 27

132-1576

Installation route: 大臂(附加装置)~右过渡阀块(附加装置)

Length: 910 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

View full repair specifications

Diagram Pipe No. 22

5I-3124

Installation route: 先导阀(分配阀左下)~手动阀(分配阀左前)

Length: 700 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

129-1077

Installation route: 手动阀(大臂上)~过渡接头(大臂侧)

Length: 700 mm
Specification: DN19;4SP-12;28Mpa
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

View full repair specifications

Diagram Pipe No. 25

4I-7769

Installation route: 左踏板~进回油阀

Length: 700 mm
Specification: DN10;-6;10.3Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

View full repair specifications

Diagram Pipe No. 13

191-8264

Installation route: 手动阀(大臂上)~分流器阀(大臂左侧)

Length: 890 mm
Specification: DN19;4SP-12;35Mpa
Left fitting: 45°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-1425

Installation route: 右踏板~进回油阀

Length: 670 mm
Specification: DN10;-6;10.3Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

View full repair specifications

Diagram Pipe No. 14

191-8265

Installation route: 手动阀(大臂上)~分流器阀(大臂右侧)

Length: 915 mm
Specification: DN25;4SP-16;35Mpa
Left fitting: 45°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

129-1077

Installation route: 辅助阀(大臂上)~过渡接头(大臂侧)

Length: 700 mm
Specification: DN19;4SP-12;28Mpa
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

View full repair specifications

Diagram Pipe No. 10

173-7590

Installation route: 手动阀(大臂后段上)~过渡阀块(大臂后段侧)

Length: 945 mm
Specification: DN25;1SN-16;7Mpa
Left fitting: 45°美制内螺纹平面密封
Right fitting: 45°美制内螺纹平面密封

View full repair specifications

Diagram Pipe No. 25

4I-7769

Installation route: 左踏板~进回油阀

Length: 700 mm
Specification: DN10;-6;10.3Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

View full repair specifications

Diagram Pipe No. 1

216-4644

Installation route: 大臂(附加装置)~小臂(附加装置)

Length: 1,150 mm
Specification: DN25;6SH-16;42Mpa
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

View full repair specifications

Diagram Pipe No. 2

126-9043

Installation route: 推土铲控制阀(分配阀右)~推土铲铁管

Length: 1,330 mm
Specification: DN13;4SP-8;28Mpa
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

View full repair specifications

Diagram Pipe No. 12

173-7592

Installation route: 手动阀(大臂后段上)~过渡阀块(大臂后段侧)

Length: 890 mm
Specification: DN19;4SP-12;35Mpa
Left fitting: 45°美制内螺纹平面密封
Right fitting: 45°美制内螺纹平面密封

View full repair specifications

Diagram Pipe No. 1

133-3664

Installation route: 大臂(附加装置)~小臂(附加装置)

Length: 1,655 mm
Specification: DN25;4SP-16;28Mpa
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

View full repair specifications

Diagram Pipe No. 16

173-7596

Installation route: 手动阀(大臂后段上)~过渡阀块(大臂后段侧)

Length: 858 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: 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封

View full repair specifications

Diagram Pipe No. 16

156-4953

Installation route: 风扇电机~控制阀(分配阀下)

Length: 1,900 mm
Specification: DN16;4SP-10;28Mpa
Left fitting: 45°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

176-9090

Installation route: 大臂(附加装置)~小臂(附加装置)

Length: 1,295 mm
Specification: DN25;6SH-16;42Mpa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: 45°美制内螺纹平面密封

View full repair specifications

Diagram Pipe No. 3

210-7276

Installation route: 大臂(附加装置)~小臂(附加装置)

Length: 1,655 mm
Specification: DN25;6SH-16;42Mpa
Left fitting: American female thread, flat-face sealOriginal Chinese: 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

View full repair specifications

Diagram Pipe No. 15

191-8266

Installation route: 手动阀(大臂上)~分流器阀(大臂右侧)

Length: 736 mm
Specification: DN19;4SP-12;35Mpa
Left fitting: 45°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

135-1259

Installation route: 液压油散热器~单向阀(分配阀后)

Length: 735 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

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.

How many hoses are currently listed for Caterpillar CAT®312B L Attachments?

There are 18 published records. 18 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®312B L Attachments?

Based on published records with valid lengths, the range is 700–5,300 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®312B L Attachments?

The most frequent raw specifications in the current published records are: DN10;-6;10.3Mpa (3 records), DN10;2SN-6;33Mpa (3 records), DN25;1SN-16;7Mpa (3 records), DN10;1SN-6;15.7Mpa (2 records), DN16;6SH-10;42Mpa (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®312B L Attachments?

Each record keeps the left and right fitting descriptions separate. Current examples: 4I-1452: left 美制内螺纹37°锥; right 美制内螺纹37°锥; 197-8202: left American female thread, flat-face seal; right American female thread, flat-face seal; 202-0448: 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®312B L Attachments hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 8 (4I-1452), Pipe No. 13 (197-8202), Pipe No. 7 (202-0448), Pipe No. 7 (191-8268). Open a record to compare its installation position with the linked manual page.