Individual hose record

122-2257 Hose Repair Specifications

Excavator · Caterpillar · CAT®M318 · Boom Assembly

Finished length1,110 mm

Hose repair card

Everything needed to identify and make this hose

Caterpillar CAT®M318Pipe No. 4 · Part 122-2257

Make this hose122-2257
L = 1,110 mmDN19；4SP-12；35MpaL90°R0°
Finished length1,110 mm
Working pressure35 MPa
Hose specificationDN19；4SP-12；35Mpa
Quantity1
L90°

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

R0°

Right fittingHeavy-series flangeSAE FLANGE · 0°View real fitting photos ↗

Route铲斗油缸(球阀规格)

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122-2257 hose repair card

Repair specifications

Part number
122-2257
Diagram pipe number
4
Installation route
铲斗油缸(球阀规格)
Hose specification
DN19；4SP-12；35Mpa
Finished length
1,110 mm
Working pressure
35 MPa
Left fitting
90° heavy-series flangeOriginal Chinese: 90°法兰-重型
Right fitting
Heavy-series flangeOriginal Chinese: 法兰-重型
Quantity
1

Same system

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Right fitting
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Diagram Pipe No. 10

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Right fitting
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Diagram Pipe No. 3

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Specification
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Left fitting
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Right fitting
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Diagram Pipe No. 20

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Specification
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Left fitting
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Right fitting
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Length
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Specification
DN19；4SP-12；35Mpa
Left fitting
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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

  • 122-22571,110 mm · DN19；4SP-12；35Mpa · 铲斗油缸(球阀规格)

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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