Individual hose record

128-9166 Hose Repair Specifications

Excavator · Caterpillar · CAT®312C · Hydraulic Tank

Finished length540 mm

Hose repair card

Everything needed to identify and make this hose

Caterpillar CAT®312CPipe No. 42 · Part 128-9166

Make this hose128-9166
L = 540 mmDN19;1SN-12;8.7MpaL0°R0°
Finished length540 mm
Working pressure8.7 MPa
Hose specificationDN19;1SN-12;8.7Mpa
Quantity1
L0°

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

R0°

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

Route液压油箱~液压油过滤器

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128-9166 hose repair card

Repair specifications

Part number
128-9166
Diagram pipe number
42
Installation route
液压油箱~液压油过滤器
Hose specification
DN19;1SN-12;8.7Mpa
Finished length
540 mm
Working pressure
8.7 MPa
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
Quantity
1

Same system

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Installation route: 液压油箱~液压油过滤器

Length
535 mm
Specification
DN13;1SN-8;10.4Mpa
Left fitting
American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting
90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封
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Diagram Pipe No. 4

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Installation route: 液压油箱~先导阀(分配阀下)

Length
510 mm
Specification
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Left fitting
90° elbow, American female thread, flat-face sealOriginal Chinese: 90°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. 53

131-9453

Installation route: 液压油箱~梭阀(分配阀下)

Length
600 mm
Specification
DN13;1SN-8;10.4Mpa
Left fitting
American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting
90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封
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Diagram Pipe No. 24

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Installation route: 液压油箱~电磁阀(回转马达右)

Length
698 mm
Specification
DN25;1SN-16;7Mpa
Left fitting
45°美制内螺纹平面密封
Right fitting
90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封
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Workshop guide

Finding the correct hydraulic hose for Caterpillar CAT®312C Hydraulic Tank

Start with the machine and route

For Caterpillar CAT®312C Hydraulic Tank, 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®312C 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

  • 128-9166540 mm · DN19;1SN-12;8.7Mpa · 液压油箱~液压油过滤器

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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