Yaroslavl ???-236, Руководство по обслуживанию

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- Cleaning of the details after the recovery, blowing with compressed air;
- Washing (spray washing) and blowing with compressed air before the
assembling of the engine, circulation of the oil passages of the crankshaft, cylinder
block, nozzles and oil cooling pipe for pistons;
- External washing of the engine after the tests and before painting;
2.6.3 Ways, methods of cleaning and facilities for cleaning and washing of
the parts and nods of the engine should provide the high degree of the cleaning of the
parts.
2.6.4 Acceptable degree of the cleaning means that there are no visible traces of
impurities at the parts and their final dimension on non-working surfaces should not exceed 0.5
mg/cm
2
with equal spreading on the surface. Also one can determine the cleaning quality before
the engine assembling by weighting of the final impurities on the surface of the oil passages - it
should be less than 25 mg and on the surface of the oil drainage passages and housing it should
not exceed 600 mg. It is recommended to control the cleanness of the parts after their washing and
cleaning with the help of visual inspection and comparison of the parts with the quality standards
having the necessary marking and which are approved by the administration of the repair plant.
Oil passages should be checked comparing with the control samples of the permitted impurity of
the wiping napkin.
2.6.5 Choosing the method, way and measure of the facility it is necessary to
consider the technical capabilities of the repair plant, ecological requirements and
requirements for the cleaning and washing equipment and its location, also the following
should be provided:
- maximal cleaning degree of the most kinds of impurities;
- minimal energy products consumption (energy, water and steam consumption);
- labour safety of the operator, choosing the cleaning and washing operations;
- simplicity of the instructions and service;
2.6.6 Choosing washing agents one should consider the following
requirements:
- high cleaning quality of the parts from the most kinds of the impurities;
- maintaining of the cleaning ability as long as possible;
- assuring an environmental safety, recycling capacities, biodestruction in a physical
environment, capacities for regeneration (cleaning) and further usage in the production;
- minimal energy consumption using working solutions;
- safety provision for the operator of the washing machine or unit;
Attention! It is not recommended to clean the parts in the caustic soda, molten salts