Hydraulic line repair data

Caterpillar CAT®312D2 Attachments – Quick Coupler Hose List

Coverage details

Hoses: 5 records
Full specifications: 5 records
Systems: 1 systems
Length range: 860–2,250 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. 25

486-0122

Installation route: 大臂(快换)~快速联轴阀(液压油箱后上)

Length: 2,190 mm
Specification: DN10;6SH-6;42Mpa
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

View full repair specifications

Diagram Pipe No. 2

277-1251

Installation route: 大臂(快换)~小臂(快换)

Length: 1,400 mm
Specification: DN13;6SH-8;42Mpa
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

View full repair specifications

Diagram Pipe No. 26

486-0125

Installation route: 大臂(快换)~快速联轴阀(液压油箱后上)

Length: 2,250 mm
Specification: DN10;6SH-6;42Mpa
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

View full repair specifications

Diagram Pipe No. 16

337-1286

Installation route: 大臂(快换)~压力传感器(分配阀前)

Length: 860 mm
Specification: DN19;6SH-12;42Mpa
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

View full repair specifications

Diagram Pipe No. 1

177-8506

Installation route: 大臂(快换)~小臂(快换)

Length: 1,800 mm
Specification: DN13;6SH-8;42Mpa
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

View full repair specifications

Diagram Pipe No. 22

466-3343

Installation route: 快速联轴阀(液压油箱后上)~快速联轴阀(液压油箱后上)

Length: 490 mm
Specification: DN10;6SH-6;42Mpa
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

Diagram Pipe No. 18

350-0837

Installation route: 快速联轴阀(液压油箱后上)~单向阀(液压油箱后上)

Length: 430 mm
Specification: DN10;6SH-6;42Mpa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: 45°美制内螺纹平面密封

View full repair specifications

Diagram Pipe No. 15

333-7032

Installation route: 快速联轴阀(液压油箱后上)~快速联轴阀(液压油箱后上)

Length: 442 mm
Specification: DN10;6SH-6;42Mpa
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

View full repair specifications

Diagram Pipe No. 12

302-2977

Installation route: 快速联轴阀(液压油箱后上)~液压泵

Length: 680 mm
Specification: DN10;6SH-6;42Mpa
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

Diagram Pipe No. 7

236-3056

Installation route: 快速联轴阀(液压油箱后上)~液压油箱

Length: 750 mm
Specification: DN10;1SN-6;10.4Mpa
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

View full repair specifications

Diagram Pipe No. 11

285-2715

Installation route: 快速联轴阀(液压油箱后上)~液压油箱

Length: 780 mm
Specification: DN10;1SN-6;10.4Mpa
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

View full repair specifications

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®312D2 Attachments – Quick Coupler?

There are 5 published records. 5 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®312D2 Attachments – Quick Coupler?

Based on published records with valid lengths, the range is 860–2,250 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®312D2 Attachments – Quick Coupler?

The most frequent raw specifications in the current published records are: DN10;6SH-6;42Mpa (2 records), DN13;6SH-8;42Mpa (2 records), DN19;6SH-12;42Mpa (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®312D2 Attachments – Quick Coupler?

Each record keeps the left and right fitting descriptions separate. Current examples: 486-0122: left American female thread, flat-face seal; right American female thread, flat-face seal; 277-1251: left American female thread, flat-face seal; right American female thread, flat-face seal; 486-0125: left American female thread, flat-face seal; right 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®312D2 Attachments – Quick Coupler hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 25 (486-0122), Pipe No. 2 (277-1251), Pipe No. 26 (486-0125), Pipe No. 16 (337-1286). Open a record to compare its installation position with the linked manual page.