Mechanical Fitter

Mechanical Fitter – Industrial & Wind Turbine Gearbox Overhaul

Role Overview

An experienced Mechanical Fitter is required to support the overhaul, retrofit, repair, and testing of industrial gearbox systems and renewable energy drivetrain equipment, with a particular focus on wind turbine gearboxes and heavy industrial transmission assemblies. The role involves full strip and rebuild activities, fault diagnosis, component inspection, retrofit modifications, precision assembly, and commissioning support within workshop and field-service environments.

The successful candidate will be responsible for carrying out gearbox overhauls to OEM specifications, completing retrofit and upgrade programmes, and ensuring all transmission assemblies achieve required operational, reliability, and quality standards prior to installation and commissioning.

Key Responsibilities

* Complete strip-down, inspection, overhaul, and rebuild of industrial gearbox systems and wind turbine transmission assemblies

* Carry out retrofit modifications, upgrade installations, and engineering improvements to gearbox and drivetrain systems

* Diagnose mechanical failures including bearing damage, gear wear, shaft misalignment, lubrication failures, seal degradation, and housing defects

* Conduct detailed dimensional inspections using precision measuring equipment including micrometers, bore gauges, dial indicators, laser alignment tools, and verniers

* Measure and set bearing preloads, gear backlash, shaft runout, end float, and assembly tolerances in accordance with OEM specifications

* Perform gearbox failure analysis and identify root causes through detailed component inspection and condition assessment

* Recondition gearbox housings, shafts, gears, bearing journals, and rotating assemblies using approved engineering and reclamation techniques

* Assemble and install lubrication systems, oil pumps, cooling circuits, filtration systems, couplings, and associated drivetrain components

* Carry out inspection and replacement of planetary gear sets, high-speed shafts, intermediate stages, and main bearing assemblies within wind turbine gearbox systems

* Read and interpret engineering drawings, assembly procedures, technical manuals, hydraulic schematics, and service documentation

* Support gearbox removal, installation, alignment, commissioning, and functional testing activities both onsite and within workshop facilities

* Perform mechanical alignment of coupled rotating equipment using laser alignment systems and precision measurement techniques

* Complete final inspection and testing procedures to verify gearbox operational performance, vibration levels, and assembly quality standards

* Maintain overhaul records, inspection reports, measurement data, and component traceability documentation in line with quality procedures

Skills & Experience Required

* Strong mechanical engineering background with proven experience in industrial gearbox overhaul and drivetrain maintenance

* Experience working on wind turbine gearbox systems or heavy industrial rotating equipment

* Sound understanding of gearbox internals including planetary gear systems, lubrication systems, bearings, couplings, and shaft assemblies

* Ability to diagnose and rectify complex mechanical and lubrication-related failures

* Experience carrying out gearbox retrofit programmes and engineering modifications

* Competent in precision measurement, tolerance checking, and mechanical alignment procedures

* Familiar with OEM overhaul standards, quality documentation, and engineering best practices

* Flexible approach to working hours within a service-driven engineering environment

* Willingness to support field-service activities, shutdown work, and offshore/onshore site operations where required

* Strong commitment to health, safety, and safe systems of work

* Ability to work independently and as part of a multidisciplinary engineering team in demanding operational environments
Only candidates based in UK and eligible to work in UK are allowed