Hydraulic line repair data

Caterpillar CAT®318C Boom Assembly Hose List

Coverage details

Hoses: 10 records
Full specifications: 10 records
Systems: 1 systems
Length range: 760–1,300 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

Diagram Pipe No. 9

4I-3823

Installation route: Arm cylinder — rightOriginal Chinese: 小臂油缸右

Length: 980 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

View full repair specifications

Diagram Pipe No. 4

187-5954

Installation route: 大臂左3/左4

Length: 1,150 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. 2

204-8389

Installation route: 大臂~分配阀前

Length: 900 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. 5

226-9836

Installation route: 分节油缸~分配阀前

Length: 1,175 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. 11

207-6701

Installation route: 大臂左2

Length: 1,200 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: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

View full repair specifications

Diagram Pipe No. 10

207-6651

Installation route: 大臂左1

Length: 1,300 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: Heavy-series flangeOriginal Chinese: 法兰-重型

View full repair specifications

Diagram Pipe No. 8

4I-3820

Installation route: Arm cylinder — leftOriginal Chinese: 小臂油缸左

Length: 950 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. 6

151-3229

Installation route: 铲斗油缸~接头

Length: 1,100 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: Heavy-series flangeOriginal Chinese: 法兰-重型

View full repair specifications

Diagram Pipe No. 9

207-6562

Installation route: 大臂油缸

Length: 760 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. 2

172-5927

Installation route: 铲斗油缸~接头

Length: 1,000 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: Heavy-series flangeOriginal Chinese: 法兰-重型

View full repair specifications

Diagram Pipe No. 1

5I-8711

Installation route: 铲斗油缸(规格1)

Length: 1,330 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: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

View full repair specifications

Diagram Pipe No. 1

4I-8885

Installation route: 铲斗油缸(规格2)

Length: 1,800 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: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

View full repair specifications

Diagram Pipe No. 5

189-6127

Installation route: 小臂油缸右(分节油缸规格)

Length: 1,390 mm
Specification: DN25;6SH-16;42Mpa
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

5I-4494

Installation route: 铲斗油缸(规格3)

Length: 1,550 mm
Specification: DN19;6SH-12;42Mpa
Left fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型
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

189-6126

Installation route: 小臂油缸左(分节油缸规格)

Length: 1,425 mm
Specification: DN19;6SH-12;42Mpa
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

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®318C Boom Assembly?

There are 10 published records. 10 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®318C Boom Assembly?

Based on published records with valid lengths, the range is 760–1,300 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®318C Boom Assembly?

The most frequent raw specifications in the current published records are: DN19;6SH-12;42Mpa (7 records), DN25;6SH-16;42Mpa (2 records), DN13;4SP-8;28Mpa (1 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Caterpillar CAT®318C Boom Assembly?

Each record keeps the left and right fitting descriptions separate. Current examples: 4I-3823: left American female thread, flat-face seal; right American female thread, flat-face seal; 187-5954: left American female thread, flat-face seal; right American female thread, flat-face seal; 204-8389: 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®318C Boom Assembly hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 9 (4I-3823), Pipe No. 4 (187-5954), Pipe No. 2 (204-8389), Pipe No. 5 (226-9836). Open a record to compare its installation position with the linked manual page.