Hydraulic line repair data

Caterpillar CAT®312C L Hydraulic Tank Hose List

Coverage details

Hoses: 3 records
Full specifications: 3 records
Systems: 1 systems
Length range: 535–600 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.

Pipe number, part number, route, length, or fittingSearch another machine

Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 53

131-9453

Installation route: 液压油箱~

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. 42

128-9166

Installation route: 液压油箱~液压油过滤器

Length: 540 mm
Specification: DN19;1SN-12;8.7Mpa
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. 40

4I-0788

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

View full repair specifications

Workshop guide

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

Start with the machine and route

For Caterpillar CAT®312C L 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 L 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

131-9453600 mm · DN13;1SN-8;10.4Mpa · 液压油箱~
128-9166540 mm · DN19;1SN-12;8.7Mpa · 液压油箱~液压油过滤器
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.

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®312C L Hydraulic Tank?

There are 3 published records. 3 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®312C L Hydraulic Tank?

Based on published records with valid lengths, the range is 535–600 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®312C L Hydraulic Tank?

The most frequent raw specifications in the current published records are: DN13;1SN-8;10.4Mpa (2 records), DN19;1SN-12;8.7Mpa (1 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Caterpillar CAT®312C L Hydraulic Tank?

Each record keeps the left and right fitting descriptions separate. Current examples: 131-9453: left American female thread, flat-face seal; right 90° elbow, American female thread, flat-face seal; 128-9166: left American female thread, flat-face seal; right American female thread, flat-face seal; 4I-0788: left American female thread, flat-face seal; right 90° elbow, 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®312C L Hydraulic Tank hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 53 (131-9453), Pipe No. 42 (128-9166), Pipe No. 40 (4I-0788). Open a record to compare its installation position with the linked manual page.