Individual hose record

139-6793 Hose Repair Specifications

Excavator · Caterpillar · CAT®M318 · Boom Assembly

Finished length2,400 mm

Hose repair card

Everything needed to identify and make this hose

Caterpillar CAT®M318Pipe No. 2 · Part 139-6793

Make this hose139-6793
L = 2,400 mmDN25；4SP-16；35MpaL45°R0°
Finished length2,400 mm
Working pressure35 MPa
Hose specificationDN25；4SP-16；35Mpa
Quantity1
L45°

Left fitting45° heavy-series flangeSAE FLANGE · 45°View real fitting photos ↗

R0°

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

Route大臂油缸

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139-6793 hose repair card

Repair specifications

Part number
139-6793
Diagram pipe number
2
Installation route
大臂油缸
Hose specification
DN25；4SP-16；35Mpa
Finished length
2,400 mm
Working pressure
35 MPa
Left fitting
45° heavy-series flangeOriginal Chinese: 45°法兰-重型
Right fitting
American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Quantity
1

Same system

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Length
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Specification
DN25；4SP-16；35Mpa
Left fitting
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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. 5

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Specification
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Left fitting
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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. 3

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Specification
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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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Length
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Specification
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Left fitting
American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting
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Diagram Pipe No. 3

139-6898

Installation route: 大臂油缸

Length
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Specification
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Left fitting
American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting
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Diagram Pipe No. 13

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Installation route: 大臂油缸

Length
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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
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Diagram Pipe No. 1

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Installation route: 铲斗油缸(规格4)

Length
1,150 mm
Specification
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Left fitting
American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting
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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

  • 139-67932,400 mm · DN25；4SP-16；35Mpa · 大臂油缸

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.

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