48180340  specialized sensor designed for construction machinery, primarily compatible with the Bobcat A8000/A8010/A8800/A8810 series skid-steer loaders, and is used for hydraulic, fuel, fluid level, and pressure monitoring.

I. Model and Classification

OE Part Number: 48180340 (Compatible with both Bobcat OEM and aftermarket replacement parts)

Type: Pressure / Fluid Level / Speed Sensor (Multi-purpose; primarily focused on pressure and fluid level monitoring)

Aliases: Hydraulic Sensor, Fuel Level Sensor, Pressure Switch

II. Applicable Models (Core Compatibility)

Bobcat Skid-Steer Loaders: A8000, A8010, A8800, A8810

Others: Select small-scale construction machinery and agricultural equipment built on the same platform

III. Key Parameters (Industry Standard)

Table

Parameter Specification

Supply Voltage DC 12V / 24V (Standard for construction machinery)

Output Signal Analog Voltage (0.5–4.5V) or Digital Switch Signal (NO/NC)

Measurement Range 0–10 bar / 0–150 psi (Hydraulic / Fuel Systems)

Operating Temperature -40°C to +125°C

Protection Rating IP67

Electrical Interface 2–3 Pin Waterproof Connector

Thread Interface M12×1.5 / M14×1.5

IV. Function and Operating Principle

Core Function: Monitors hydraulic system pressure, fuel level, and coolant level; converts these physical quantities into electrical signals for transmission to the ECU, triggering alarms or control actions. 

Operating Principle: Pressure or fluid level acts upon an internal diaphragm or float, which then converts this mechanical input into an electrical signal via the piezoresistive effect or mechanical contact switches. VI. Installation and Troubleshooting

**Installation Essentials**

Install in the main hydraulic circuit, fuel tank, or coolant reservoir.

Clean the threads and sealing surfaces; replace the O-ring.

Torque: 25–35 N·m.

Distinguish between analog and switch-type sensors to avoid wiring errors.

**Common Faults and Symptoms**

Hydraulic/Fluid Level Alarm Light Stays On: Sensor failure, line leakage, or stuck contacts.

ECU Fault Codes: Pressure- or level-related codes (e.g., P0520, P0521).

Engine Lacks Power / Speed Limitation: ECU has entered protection mode.

No Signal Output: Internal open circuit or corroded connector pins.

**Simple Testing**

Analog Sensors: Use a multimeter to measure the 0.5–4.5V signal output.

Switch-Type Sensors: Use the continuity setting to check for NO/NC switching.

Abnormality Detected: Replace the sensor or inspect the wiring harness.

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