Individual hose record

129-7340 Hose Repair Specifications

Excavator · Caterpillar · CAT®M318 · Attachments – Lock Valve

Finished length1,070 mm

Hose repair card

Everything needed to identify and make this hose

Caterpillar CAT®M318Pipe No. 5 · Part 129-7340

Make this hose129-7340

Finished length1,070 mm

Working pressure35 MPa

Hose specificationDN19；4SP-12；35Mpa

Quantity1

Left fitting90° heavy-series flangeSAE FLANGE · 90°View real fitting photos ↗

Right fitting90° heavy-series flangeSAE FLANGE · 90°View real fitting photos ↗

Route右小臂油缸锁止阀~过渡阀块(大臂油缸锁止阀)

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Repair specifications

Part number: 129-7340
Diagram pipe number: 5
Installation route: 右小臂油缸锁止阀~过渡阀块(大臂油缸锁止阀)
Hose specification: DN19；4SP-12；35Mpa
Finished length: 1,070 mm
Working pressure: 35 MPa
Left fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型
Quantity: 1

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Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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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. 17

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Diagram Pipe No. 8

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Left fitting: 45°美制内螺纹平面密封
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Diagram Pipe No. 8

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Installation route: 小臂油缸锁止阀

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Diagram Pipe No. 3

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Installation route: 大臂(小臂油缸锁止阀)~

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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

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Workshop guide

Finding the correct hydraulic hose for Caterpillar CAT®M318 Attachments – Lock Valve

Start with the machine and route

For Caterpillar CAT®M318 Attachments – Lock Valve, 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

129-73401,070 mm · DN19；4SP-12；35Mpa · 右小臂油缸锁止阀~过渡阀块(大臂油缸锁止阀)

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.