856A1081G04 is a precision aerospace fixture compliant with AS9100D quality standards and FAA/EASA regulations, dedicated to aircraft engine combustion chamber maintenance.It serves as a combustion liner positioning fixture, specialized in accurate fixing and alignment of combustion chamber liners during MRO disassembly, inspection, repair and reassembly. It ensures strict concentricity and clearance tolerances, avoids liner misalignment or deformation, prevents uneven fuel combustion, local overheating and thermal damage, and safeguards stable combustion efficiency under high-pressure and high-temperature operating conditions.Made of high-strength heat-resistant alloy steel, it resists high temperature and mechanical impact, working stably at -55℃ to 350℃. Weighing 1.4kg, it features a secure locking mechanism and precision locating structures for reliable clamping, enabling efficient maintenance operations. It is a vital tool to guarantee combustion chamber assembly quality and overall engine operational safety, efficiency and durability.