Yaroslavl ???-236, Maintenance Manual

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2.9.4 Test stands should be equipped with the facilities for emergency engine
stop in case of oil pressure drop, pressure rise of the crankcase blow-by gasses, or if the
temperature of the coolant or rotation rate of the crankshaft exceeds the limits.
To set the limits of the emergency shutdown according to the table 2.1.
Table 2.1 - Limits of the emergency shutdown
Parameter Unit of measurement Limit Action
Rotation rate of
the engine
min-1
2400 Shutdown
Pressure:
oil in the main oil
passage
kPa (excessive)
less than 100 (switching on in 5
sec after the engine starting)
Shutdown
crankcase blow-by
gasses kPa more than 5
Idle run
of the fuel at the
engine inlet
kPa more than +1 less than - 0.6
Idle run
Temperature
of the coolant in the
engine
°
C
more than 105
Idle run
of the fuel at the
engine inlet
°
C
more than 60
Idle run
2.9.5 Tests should be carried out at the diesel fuel oil according to the GOST 305-82
and oil М-10Г2к. Fuel and oil applied during the tests should be certified or have the test
sheets certifying that they comply with the normative documents (GOST, TU).
2.9.6 Inlet system should be equipped with the air filters with the initial resistance
no more than 3 kPa (300 mm w.g.) in the nominal conditions. Limiting resistance should be
less than 7 kPa (700 mm w.g.). Stand offtake system of the blow-by gasses should not cause
the reverse pressure at the outlet flanges more than 10 kPa (1000 mm w.g.) in the nominal
conditions.
2.9.7 In the test process one should maintain the temperature of the coolant at the
outlet of the engine within the limits 80...100
°
C, fuel temperature at the inlet of the high-
pressure fuel pump within the limits 30...35
°
C.
2.9.8 Engine weight is defined in the complete of the GOST 14846-81 at that
allowable values of the deviation should comply with the requirements of the GOST