Individual hose record

4I-0788 Hose Repair Specifications

Excavator · Caterpillar · CAT®312C · Hydraulic Tank

Finished length535 mm

Hose repair card

Everything needed to identify and make this hose

Caterpillar CAT®312CPipe No. 40 · Part 4I-0788

Make this hose4I-0788
L = 535 mmDN13;1SN-8;10.4MpaL0°R90°
Finished length535 mm
Working pressure10.4 MPa
Hose specificationDN13;1SN-8;10.4Mpa
Quantity1
L0°

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

R90°

Right fitting90° elbow, American female thread, flat-face sealFITTING · 90°View real fitting photos ↗

Route液压油箱~液压油过滤器

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4I-0788 hose repair card

Repair specifications

Part number
4I-0788
Diagram pipe number
40
Installation route
液压油箱~液压油过滤器
Hose specification
DN13;1SN-8;10.4Mpa
Finished length
535 mm
Working pressure
10.4 MPa
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
Quantity
1

Same system

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Installation route: 液压油箱~梭阀(分配阀下)

Length
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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. 42

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Installation route: 液压油箱~液压油过滤器

Length
540 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
American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
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Diagram Pipe No. 24

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Length
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Specification
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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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Diagram Pipe No. 4

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Installation route: 液压油箱~先导阀(分配阀下)

Length
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Specification
DN13;-8;10.3Mpa
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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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

  • 4I-0788535 mm · DN13;1SN-8;10.4Mpa · 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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