TS 12369

TS 12369 is a vocational standard for the diesel engine repairman trade, defining the occupation and addressing how practitioners are classified, together with the tools, equipment, knowledge, skills, attitudes, and behaviours associated with the job. In general technical terms, diesel engine repair is a specialised field built around compression-ignition engine operation, maintenance needs, and fault diagnosis.

What the occupational framework brings together

According to the scope, the standard covers the description and classification of diesel engine repair work as well as the professional characteristics expected from each class of worker. This means the subject is not limited to mechanical repair alone; it also includes diagnosis, maintenance, adjustment, disassembly and reassembly, and work discipline within one occupational framework. Because diesel engines are widely used in vehicles, industrial machinery, agricultural equipment, and stationary power applications, the trade typically demands durability in practice, attention to fuel-system behaviour, and a disciplined approach to troubleshooting.

Tools, equipment, and technical knowledge

The standard also includes the tools, implements, and equipment to be used, highlighting the importance of suitable hand tools, measuring instruments, and service equipment in diesel engine work. From a general engineering perspective, diesel repair involves understanding the fuel supply system, combustion characteristics, compression pressure, injectors, cooling, and lubrication as interconnected subsystems. For that reason, the practitioner is expected not only to recognise parts, but also to interpret fault symptoms systematically and maintain orderly, safe working habits.

• Definition and occupational classification of diesel engine repair work
• Required knowledge, skills, attitudes, and behaviours
• Tools, implements, and equipment used in the trade
• Minimum professional framework for each occupational class