XCMG Two-Section Boom Angle Sensor 803591856

Part number 803591856 is listed as a boom angle sensor for selected XCMG two-section boom systems. The sensor provides boom-position information to the load moment indicator or crane control system, making mechanical orientation and electrical compatibility important.

Identification Checklist

• Part number 803591856 and complete sensor label

• XCMG crane model and machine serial number

• LMI controller, display or system reference

• Connector type, pin count, cable length and outlet direction

• Mounting bracket, shaft or linkage arrangement

• Installed orientation and reference position photographs

Application and Service Scenarios

This sensor may be considered when the displayed boom angle is missing, unstable or inconsistent with the physical boom position, or when the original sensor has confirmed impact, water or cable damage. It is also relevant during boom or LMI refurbishment when the sensor reference has been verified. An incorrect angle display does not by itself prove sensor failure.

Diagnosis Before Replacement

Inspect the supply voltage, ground, signal wiring, connector terminals and cable route. Check the mounting bracket and linkage for looseness, distortion or incorrect zero position. Compare diagnostic values with a known boom position using the approved service method. Controller configuration or wiring faults can produce symptoms similar to a defective sensor.

Installation and Calibration

Record the original orientation before removal. Do not rotate, preload or mount the replacement arbitrarily. After installation, zeroing or calibration may be required by the LMI system. Verify the displayed angle across the permitted boom movement and complete the prescribed safety-function test before operation.

Protected Packing

The shaft, housing and connector are immobilized with shaped cushioning. Anti-static and moisture protection are used for the electronic component, and the package is labelled with 803591856.

Frequently Asked Questions

Is the sensor ready to use immediately after installation?

The system may require correct orientation, zeroing or calibration before accurate operation.

Can an angle error be caused by wiring?

Yes. Power, ground, signal, connector and harness faults can cause missing or unstable readings.

What installation photo is most useful?

Show the sensor, bracket or linkage, cable direction, connector and the boom reference position before removal.