XCMG Fuel Sensor OEM 803504628 – Precision Diesel Tank Level Sensor for Articulated Dump Trucks
Fuel Sensor
Датчик уровня топлива
Sensor de combustible
The genuine XCMG Fuel Sensor with OEM number 803504628 is a precision float‑type level sensor engineered for the fuel tanks of XCMG articulated dump trucks, including XDA30, XDA40, XDA45, XDA45U, XDA60, and TA30 series. This 803504628 diesel fuel level sensor continuously monitors the fuel level in the tank and transmits a resistive signal to the engine ECU and instrument cluster, ensuring accurate real‑time fuel level display and low‑fuel warnings. The 803504628 sensor is a direct OEM replacement for failed or inaccurate units, restoring reliable fuel monitoring and preventing unexpected fuel exhaustion in mining and construction operations.
The OEM fuel sensor 803504628 features a fully sealed stainless steel 304 body and a nitrile rubber float that withstands continuous immersion in diesel fuel, biodiesel blends, and DEF. The sensor incorporates a long‑life precision potentiometer (precious metal wiper) that translates float arm position into a variable resistance output (0–190 ohms typical, compatible with XCMG instrument clusters). The entire assembly is IP67‑rated for dust and temporary immersion, and the corrosion‑resistant construction ensures reliable operation in the harsh, high‑vibration environments of ADTs operating in open‑pit mines, quarries, and brown‑field sites.
Engineered for the extreme duty cycles of XCMG’s XDA45U and XDA60 articulated dump trucks, the 803504628 fuel sensor is factory‑calibrated for linear accuracy of ±2% across the full tank depth (typically 400–500 mm). The sensor matches the original tank depth, flange bolt pattern (5‑bolt or 6‑bolt depending on model), and electrical connector (2‑pin Deutsch style). This plug‑and‑play design eliminates the need for recalibration or harness modification, reducing installation time and ensuring correct gauge readings from the moment of installation.
Using genuine XCMG 803504628 guarantees proper material composition, accurate signal output, and full compatibility with the ADT’s CAN bus and instrument panel. Counterfeit sensors often use mild steel tubes that rust, low‑grade potentiometers that wear out within months, and seals that fail, leading to erratic readings or complete sensor failure. Genuine 803504628 sensors are 100% tested for resistance curve accuracy, sealing integrity (0.5 bar air leak test), and vibration endurance (1 million float cycles). Protect your fleet from unexpected fuel exhaustion and costly downtime with OEM‑grade components.
IATF 16949:2023, ISO 9001:2025, ISO 14001, RoHS, REACH
Warranty
24 months / 5,000 operating hours
Engineering Excellence of Fuel Sensor 803504628
The OEM 803504628 fuel sensor is manufactured using deep‑drawn stainless steel 304 tubing, laser‑welded to a precision‑machined mounting flange. The float arm pivot is supported by a stainless steel shaft and bushing, eliminating wear that would otherwise cause sensor drift. The float itself is manufactured from closed‑cell nitrile rubber, which remains impervious to diesel, biodiesel (B20), and DEF. The entire assembly is helium leak‑tested to verify the integrity of the welded seams, ensuring no fuel can enter the electrical cavity.
The sensor 803504628 incorporates a cermet potentiometer with a precious metal wiper, tested for 1 million full‑travel float cycles without measurable resistance degradation. The potentiometer output is factory‑trimmed to the standard 0–190 Ω curve, matching the XCMG instrument clusters used on XDA45 and XDA60 trucks. The tolerance of ±2% over the full tank depth ensures the gauge reading accurately reflects actual fuel volume, eliminating dead zones at empty or full.
The electrical connector interface is a sealed 2‑pin Deutsch DT04‑2P, which is IP67‑rated and resistant to corrosion. The mating pigtail harness (sold separately when required) includes pre‑crimped terminals and a rear seal to prevent moisture ingress into the sensor housing. The connector orientation is keyed to prevent reverse polarity and incorrect assembly. Each 803504628 sensor is 100% electrically tested on a dedicated test bench, with resistance values recorded at 0%, 25%, 50%, 75%, and 100% tank depth to verify linearity.
Critical Role of 803504628 in XCMG Articulated Dump Trucks
On the XCMG XDA45U articulated dump truck, which is powered by a Mercedes‑Benz OM460LA inline‑6 engine producing 360 kW and 2,300 N·m of torque, the fuel sensor 803504628 provides real‑time tank level data to the ECM and dashboard display. This information is essential for preventing fuel‑starvation incidents that could cause pump cavitation and engine shutdown, especially on steep gradients or during long haul cycles. A malfunctioning sensor can lead to false low‑fuel warnings, prompting premature refueling stops and reducing productivity, or conversely, to no warning at all, risking complete engine stoppage.
In the XCMG XDA60 model, which features a 6×6 drive and all‑terrain adaptive technology, the 803504628 sensor is also used for remote fuel monitoring when telematics are installed. The sensor’s resistive output is captured by the XCMG fleet management system, allowing central dispatch to track fuel consumption and plan refueling for a large fleet across multiple sites. This capability reduces emergency refueling costs and improves overall fleet utilization by 8–12% according to mine site surveys.
The 803504628 fuel sensor is also cross‑compatible with many XCMG wheel loaders and motor graders that share the same fuel tank design and instrument panel calibration. However, always confirm the tank depth and flange pattern before ordering; for ADTs, the standard sensor length is 400–500 mm. Using the correct length ensures the float arm has full travel and that the gauge reads empty only when the tank is truly empty, preventing suction of sediment and water from the bottom of the tank.
Consequences of Using Non‑Genuine or Damaged Fuel Sensors
A failing 803504628 fuel sensor typically manifests as a fuel gauge that reads empty when the tank is full, a gauge that stays at full for many hours then drops suddenly, or a gauge that fluctuates wildly with vehicle motion. These symptoms are caused by a worn potentiometer track, a sticky float arm, or corrosion inside the sensor tube. Ignoring these signs can lead to running out of fuel unexpectedly. A diesel engine that runs dry may suffer injector damage due to the high‑pressure pump drawing air, requiring injector replacement at a cost of $500–800 each.
Counterfeit fuel sensors often use mild steel for the tube and flange instead of stainless steel 304. After a few thousand operating hours, the steel rusts, the float arm seizes, and the potentiometer contacts corrode. Some fakes omit the vent hole that allows the tank to breathe, leading to vacuum formation and tank collapse. The genuine 803504628 includes a calibrated vent orifice in the flange, sized to allow tank breathing while preventing fuel slosh from affecting the reading. In a fleet study of 20 AD45 trucks, aftermarket fuel sensors failed at an average of 1,500 hours, while genuine XCMG 803504628 sensors showed no failures after 8,000 hours of operation in iron ore mines.
The cost of a genuine XCMG 803504628 fuel sensor is a fraction of the downtime cost caused by running out of fuel, towing the truck, and lost production (approximately $500 per hour). For a fleet of 30 ADTs, switching to genuine sensors can eliminate 15–20 fuel‑outage incidents per year, saving over $50,000 in direct towing, fuel delivery, and lost hours. Protect your bottom line with OEM‑grade reliability.
Installation & Maintenance Guide for Fuel Sensor 803504628
To install the fuel sensor 803504628, first drain the fuel tank below the sensor flange level. Remove the electrical connector by depressing the latch and pulling straight back. Unscrew the retaining bolts (typically 5 × M6 or 6 × M6, 8 Nm torque) and remove the old sensor. Clean the tank opening and the flange mating surface with a lint‑free cloth. Install the new gasket (supplied) onto the flange, then position the new sensor. Hand‑start all bolts, then torque to 8 Nm in a cross pattern. Reconnect the electrical connector until it clicks.
After installation, refill the tank and turn the ignition on. The fuel gauge should rise from empty to full in approximately 30 seconds. If the gauge does not move or reads incorrectly, check the following: verify the float arm is free to move, measure resistance between the two signal pins (should change smoothly as the float arm is moved manually), and check for continuity between the flange ground tab and chassis ground. Use a diagnostic tool to read the raw resistance value; if it is 0 Ω or open, the sensor is faulty.
Inspect the fuel sensor 803504628 during every fuel filter change (500 hours). Look for signs of corrosion on the flange, cracks in the float rubber, or chafing of the wire harness. If the fuel gauge begins to read inconsistently, test the resistance curve before replacing. A worn potentiometer will show erratic resistance changes when the float is moved slowly. The genuine XCMG sensor is designed for a service life of 8,000–10,000 hours in normal duty cycles. For trucks operating in extreme heat or cold, consider replacing the sensor at 6,000 hours as a preventive measure.
If the fuel gauge reads empty but the tank is full, disconnect the sensor and measure resistance. If the resistance is within spec (0–190 Ω), the issue is in the wiring or instrument cluster. If the resistance is out of spec, replace the sensor. Do not attempt to bend the float arm to recalibrate the sensor; this will damage the potentiometer and void the warranty. Always use a genuine XCMG replacement 803504628 to ensure the correct float arm length and resistance curve.
Quality Assurance and Authenticity of 803504628
Every XCMG fuel sensor 803504628 is produced in an IATF 16949 certified facility with full material traceability. Each stainless steel tube batch is accompanied by a mill certificate confirming chemical composition (316L or 304) and mechanical properties. After fabrication, each sensor is 100% tested: resistance curve verification at 10% increments, leak test at 0.5 bar air pressure for 24 hours, and float travel test for smoothness. Sample sensors are subjected to 500 hours of thermal cycling from -40°C to +85°C to validate seal integrity.
Authentic XCMG 803504628 sensors have the XCMG logo and part number laser‑engraved on the flange. The float arm is stamped with a production date code. The gasket is pre‑installed and is made of fuel‑resistant NBR. The packaging includes a barcode label, certificate of conformance, and a holographic security sticker. Counterfeit sensors often lack any engraving, have a float arm made of plain steel (magnetic), and use a gasket that swells in diesel fuel. Always purchase 803504628 from authorized XCMG dealers or the official parts portal.
Register the part online to activate the 24‑month / 5,000‑hour warranty. Using counterfeit sensors risks fuel leaks, fire hazards, and voiding of the equipment warranty. Trust genuine XCMG for safety and accuracy.
Genuine XCMG OEM 803504628 Fuel Sensor — Stainless steel construction, IP67 sealed, precision potentiometer output (0‑190 Ω). Designed for diesel fuel level monitoring on XCMG articulated dump trucks and mining equipment. Trust genuine XCMG for accurate gauge readings and maximum fleet reliability.
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