Individual hose record

204-0689 Hose Repair Specifications

Excavator · Caterpillar · CAT®M318 · Boom Assembly

Finished length1,400 mm

Hose repair card

Everything needed to identify and make this hose

Caterpillar CAT®M318Pipe No. 11 · Part 204-0689

Make this hose204-0689

Finished length1,400 mm

Working pressure42 MPa

Hose specificationDN25；6SH-16；42Mpa

Quantity4

Left fittingAmerican female thread, flat-face sealFITTING · 0°View real fitting photos ↗

Right fitting45°美制内螺纹平面密封ORFS · 45°View real fitting photos ↗

Route大臂左1/左2/左3/左4

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Repair specifications

Part number: 204-0689
Diagram pipe number: 11
Installation route: 大臂左1/左2/左3/左4
Hose specification: DN25；6SH-16；42Mpa
Finished length: 1,400 mm
Working pressure: 42 MPa
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
Quantity: 4

Same system

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Diagram Pipe No. 11

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Installation route: 大臂左1/左2/左3/左4

Length: 1,550 mm
Specification: DN25；6SH-16；42Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 1

200-4052

Installation route: 铲斗油缸(规格4)

Length: 1,150 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

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Diagram Pipe No. 1

200-4052

Installation route: 铲斗油缸(后段)

Length: 1,150 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

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Diagram Pipe No. 1

200-4052

Installation route: 铲斗油缸(前段)

Length: 1,150 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

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Diagram Pipe No. 17

203-2924

Installation route: 大臂左1/左4(分节油缸规格)

Length: 3,980 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

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Diagram Pipe No. 18

223-3305

Installation route: 大臂左2/左3(分节油缸规格)

Length: 5,010 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

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Diagram Pipe No. 4

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Installation route: 大臂~分配阀

Length: 1,350 mm
Specification: DN25；4SP-16；35Mpa
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

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Diagram Pipe No. 5

145-4958

Installation route: 铲斗油缸(规格3)

Length: 1,450 mm
Specification: DN25；4SP-16；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

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Workshop guide

Finding the correct hydraulic hose for Caterpillar CAT®M318 Boom Assembly

Start with the machine and route

For Caterpillar CAT®M318 Boom Assembly, identify the exact model and hydraulic system on the machine first. A part number or diagram pipe number is the fastest way to narrow a replacement hose; if neither is visible, compare the installation route and the existing hose.

See all Caterpillar CAT®M318 systems

Read the dimensions before cutting

Check whether a listed dimension is finished assembly length, hose-only length, or cut length. These are not interchangeable. Confirm hose specification and pressure rating, then compare both ends separately: thread, sealing seat, size, angle, and orientation.

Records to compare

204-06891,400 mm · DN25；6SH-16；42Mpa · 大臂左1/左2/左3/左4

Use the drawing as a location check

Where an installation drawing or manual figure is available, match its callout to the part number and physical route. A hydraulic circuit diagram explains connections but does not show the exact routing of a hose on the machine. Take the old hose or clear end-fitting photographs to the workshop if any dimension is missing.

For reference only. Confirm the actual hose before fabrication.