Hydraulic line repair data

Caterpillar CAT®M318 Attachments Hose List

Coverage details

Hoses: 24 records
Full specifications: 24 records
Systems: 1 systems
Length range: 500–7,700 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.

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 2

133-0634

Installation route: Installation route — English review pendingOriginal Chinese: 方向盘~

Length: 1,500 mm
Specification: DN13；2SN-8；27.5Mpa
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. 5

127-6222

Installation route: Installation route — English review pendingOriginal Chinese: 负载控制阀(分配阀前)~

Length: 1,270 mm
Specification: DN16；6SH-10；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. 14

137-6743

Installation route: Installation route — English review pendingOriginal Chinese: 后左/后右行走马达~过渡接头(后传动轴上)

Length: 600 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

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Diagram Pipe No. 4

144-6054

Installation route: Installation route — English review pendingOriginal Chinese: 方向盘~

Length: 2,600 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

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Diagram Pipe No. 1

142-8381

Installation route: Installation route — English review pendingOriginal Chinese: 方向盘~

Length: 1,200 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: 45° elbow, American female thread, flat-face sealOriginal Chinese: 45°美制内螺纹平面密封

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Diagram Pipe No. 2

123-4803

Installation route: Installation route — English review pendingOriginal Chinese: 铲刀油缸液压管路

Length: 2,250 mm
Specification: DN6；-4；10.3Mpa
Left fitting: American tapered male threadOriginal Chinese: 美制锥形外螺纹
Right fitting: American female thread, 37° cone seatOriginal Chinese: 美制内螺纹37°锥

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Diagram Pipe No. 10

116-7263

Installation route: Installation route — English review pendingOriginal Chinese: 大臂(附加装置)~铁管(分配阀前)

Length: 1,550 mm
Specification: DN16；6SH-10；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. 6

133-9661

Installation route: Installation route — English review pendingOriginal Chinese: 液压发电机~

Length: 2,150 mm
Specification: DN13；1SN-8；14Mpa
Left fitting: 45° elbow, American female thread, flat-face sealOriginal Chinese: 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

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Diagram Pipe No. 9

147-5273

Installation route: Installation route — English review pendingOriginal Chinese: 大臂附加装置管

Length: 7,700 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

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Diagram Pipe No. 10

116-7262

Installation route: Installation route — English review pendingOriginal Chinese: 大臂(附加装置)~分配阀

Length: 1,350 mm
Specification: DN16；6SH-10；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. 7

137-3870

Installation route: Installation route — English review pendingOriginal Chinese: 大臂(附加装置)~分配阀

Length: 1,650 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

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Diagram Pipe No. 14

142-4852

Installation route: Installation route — English review pendingOriginal Chinese: 大臂(附加装置)~电磁阀(大臂左侧)

Length: 1,685 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

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Diagram Pipe No. 11

116-7263

Installation route: Installation route — English review pendingOriginal Chinese: 大臂(附加装置)~分配阀

Length: 1,550 mm
Specification: DN16；6SH-10；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. 9

147-3579

Installation route: Installation route — English review pendingOriginal Chinese: 大臂附加装置管

Length: 7,300 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

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Diagram Pipe No. 9

116-7262

Installation route: Installation route — English review pendingOriginal Chinese: 大臂(附加装置)~铁管(分配阀前)

Length: 1,350 mm
Specification: DN16；6SH-10；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. 4

115-7994

Installation route: Installation route — English review pendingOriginal Chinese: 铲刀油缸液压管路

Length: 650 mm
Specification: DN10；6SH-6；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

123-4803

Installation route: Installation route — English review pendingOriginal Chinese: 铲刀油缸液压管路

Length: 2,250 mm
Specification: DN6；-4；10.3Mpa
Left fitting: American tapered male threadOriginal Chinese: 美制锥形外螺纹
Right fitting: American female thread, 37° cone seatOriginal Chinese: 美制内螺纹37°锥

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Diagram Pipe No. 3

177-7143

Installation route: Installation route — English review pendingOriginal Chinese: 大臂(附加装置)~分配阀

Length: 7,200 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

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Diagram Pipe No. 5

115-7995

Installation route: Installation route — English review pendingOriginal Chinese: 铲刀油缸液压管路

Length: 500 mm
Specification: DN10；6SH-6；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. 6

137-6746

Installation route: Installation route — English review pendingOriginal Chinese: 铲刀油缸液压管路

Length: 650 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

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Diagram Pipe No. 1

133-0633

Installation route: Installation route — English review pendingOriginal Chinese: 方向盘~转向泵

Length: 1,200 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: 45° elbow, American female thread, flat-face sealOriginal Chinese: 45°美制内螺纹平面密封

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Diagram Pipe No. 11

147-8424

Installation route: Installation route — English review pendingOriginal Chinese: 大臂(附加装置)~电磁阀(大臂左侧)

Length: 5,600 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

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Diagram Pipe No. 9

116-7258

Installation route: Installation route — English review pendingOriginal Chinese: 踏板(附加装置)~

Length: 1,400 mm
Specification: DN19；4SP-12；35Mpa
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. 2

143-4730

Installation route: Installation route — English review pendingOriginal Chinese: 方向盘~

Length: 1,500 mm
Specification: DN13；1SN-8；14Mpa
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

Workshop guide

Finding the correct hydraulic hose for Caterpillar CAT®M318 Attachments

Start with the machine and route

For Caterpillar CAT®M318 Attachments, 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

133-06341,500 mm · DN13；2SN-8；27.5Mpa · Installation route — English review pending
127-62221,270 mm · DN16；6SH-10；42Mpa · Installation route — English review pending
137-6743600 mm · DN10；1SN-6；15.7Mpa · Installation route — English review pending

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.

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®M318 Attachments?

There are 24 published records. 24 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®M318 Attachments?

Based on published records with valid lengths, the range is 500–7,700 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®M318 Attachments?

The most frequent raw specifications in the current published records are: DN10；2SN-6；33Mpa (7 records), DN16；6SH-10；42Mpa (5 records), DN10；1SN-6；15.7Mpa (2 records), DN10；6SH-6；42Mpa (2 records), DN13；1SN-8；14Mpa (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®M318 Attachments?

Each record keeps the left and right fitting descriptions separate. Current examples: 133-0634: left American female thread, flat-face seal; right American female thread, flat-face seal; 127-6222: left Heavy-series flange; right Heavy-series flange; 137-6743: 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®M318 Attachments hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 2 (133-0634), Pipe No. 5 (127-6222), Pipe No. 14 (137-6743), Pipe No. 4 (144-6054). Open a record to compare its installation position with the linked manual page.