Yaroslavl ???-236, Maintenance Manual

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repair requires the complete disassembling of the engine, its washing, cleaning of all parts, their
inspection, recovery or replacement of all defected parts, assembling and testing.
Repair methods:
Repair without responsibility is the method when the original parts of the repairing
item are not preserved.
Repair with responsibility (individual) means the method when the original parts of
item are installed at this item after the repair. As a rule, this method is applied during the current
repair, it preserves final resource of the parts more completely.
Unit repair is the method of the repair without responsibility when the defected units are
replaced with the new or repaired ones.
In line repair is the method which is performed in the specialized places with the defined
technological order and period.
Repair system means the combination of interacting factors:means of the repair,
executors, strategies, technologies and specifications and technical documentation. Repair
system guarantees the prevention of the failure or wear and getting of the information on the
technical condition of the engine and it parts, planning of the operation time and scope of repair
works, provision of the materials and spare parts;
Means of the repair are the main funds with the organizational and production
structure (buildings of the maintenance plants, equipment, organizational tools, facilities);
Repair strategy is the system of rules defining the choice of the decisions on content,
place and time of the repair works or of the decommissioning;
Repair technology - combination of the methods of the changing of
engine technical condition and its parts in the repair process which are performed
in the defined order.
Specifications and technical documentation are the documents containing
principals, definitions, methods and regulations for the performance of the repair and
maintenance.