Isdemir Iskenderun Iron and Steel Co. In our facilities, GT compressor maintenance works were completed under the supervision of İsdemir and Siemens. The scope of maintenance is as follows: Coupling adjustment before disassembly Disassembly and assembly of air suction and discharge line pipes Disassembly and assembly of air suction outer and inner sleeve Impeller disassembly, cleaning with pressurized water, penetrant test assembly, axial adjustment Coupling disassembly Sealing seal disassembly and replacement Reducer outer casing disassembly Dismantling and replacement Gearbox controls Oil shaft adjustment between bearing shaft Dismantling, maintenance and installation of coupling intermediate shaft All coupling and bolt checks Final coupling adjustment