20PS767-6  oil pressure switch sensor specifically designed for Caterpillar (CAT) excavators, primarily used in models such as the 320B and 320C. I. Core Information

Model: 20PS767-6 (OEM: 106-0179)

Type: Oil Pressure Switch

Brand: Caterpillar

Function: Monitors engine oil pressure; triggers an alarm when pressure drops below a preset value to protect the engine.

II. Compatible Models (Mainstream)

Caterpillar Excavators: 320B, 320C, 320D, 312, 315, 325C/D, etc.

Engines: 3066, 3116, 3126 series, etc.

III. Specifications (General)

Electrical: 2-pin waterproof connector; compatible with both 12V and 24V systems.

Thread: 7/16"-20 UNF (Interchangeable with 9X-0378).

Trigger Pressure: Approx. 0.3–0.5 bar (Low-pressure alarm).

Material: Brass body with oil-resistant seals.

IV. Related Models (Commonly Confused)

20PS767-6: Corresponds to 106-0179 (Commonly used on 320B/C).

20PS767-9: Corresponds to 106-0180 (Commonly used on 320D).

20PS767-14: Corresponds to 106-0179X03 (330 Series).

The suffix numbers indicate differences in trigger pressure, connector type, or wiring harness; these models are not directly interchangeable.

V. Alternative Models (Domestic OEM)

106-0179, 106-0180, 106-0181

309-5769, 221-8859, 274-6719

VII. Troubleshooting and Replacement

Failure Symptoms: Oil pressure warning light remains constantly on (or fails to light up); abnormal engine shutdown.

Replacement Procedure: Relieve pressure and disconnect power → Clean threads → Tighten to specified torque → Test run and check for leaks.