Yaroslavl ???-236, Руководство по обслуживанию

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delivered with the repaired engine:
- acceptance report;
engine certificate with the amended with the remarks about the performed repair, made
changes of the numbers and markings;
- list of spare parts, tools and facilities;
- operational documents for the components and spare parts to them with the indication of
the guaranteed service life stated by the manufacturer;
- specified documents of the accounting records;
- documents for the repair specified in the agreement (contract).
2.4.3 Receiving the engine from repair accepter should inspect its technical condition
visually, he should also check the availability and correctness of the documentation. If any
documents are missing or there is misinformation in them the engine acceptance should be stopped
before the elimination of these shortcomings.
2.4.4 On the demand of the accepter repair plant should present for review the
report of commissioning tests, technological certificate and other documentation concerning
the repair.
2.5 General technical requirements for engine disassembly
2.5.1 To increase the high quality of the repair, working culture and labour productivity
engine should be cleaned from the mud, washed (if necessary, electrical equipment should be
provisionally removed) before the disassembling, oil should be drained from the oil housing.
Before removing the engine from the vehicle coolant should be drained from the
cooling system.
2.5.2 Engine disassembling should provide gentle work with the details, maintaining their
maximal integrity (finished surfaces at first), dimensions, form. Engine should be disassembled with
the tools and facilities (including facilities recommended in this "Manual...") which eliminate the
occurrence of the deformations, cracks, crushes, chips and other defects at the surfaces of the engine
components. While the detail pressing one should avoid the direct stresses on them, one should also
use special drawers and mandrels.
2.5.3 According to the results of the inspection and estimation of the technical condition
one should consider the necessity of the complete disassembling of the assembly units aimed at
maintaining of the coupling of the connecting parts, their breaking-in to each other, as well as
simplifying the disassembling works. Disassembling of the assembly units in carried out if is it
necessary according to the repair conditions.