The repaired engine is exposed to bench tests (обкатке) without loading on a following cycle.
Frequency of rotation,
Mines-1 Time, mines
750Ц800.........................................2
1000..............................................3
1500..............................................4
2000..............................................5
Having established the engine at the stand, start up it and check up:
— Absence of a leak of a cooling liquid or fuel between interfaced details and in connections of pipelines;
— Pressure of oil and absence подтекания oils through linings;
— Installation of the moment of ignition;
— Frequency of rotation idling;
— Tightness of connections of the power supply system in a motor compartment.
If extraneous knocks or malfunctions are found out, stop the engine, eliminate them, and then continue tests.
At подтекании oils through a lining between the pallet картера and the block of cylinders tighten fastening bolts the recommended moment. If the leak does not stop, check up a lining and if necessary replace it.
At подтекании oils through a lining between a cover of a head of the block of cylinders and a block head check up a lining and rubber заглушки on face surfaces of a head of the block of cylinders. If necessary replace a lining and заглушки, observing the recommendations stated in subsection «engine Assemblage».
After engine repair it is necessary to observe a certain mode of operation for the period extra earnings of working surfaces of new details. It especially concerns those engines with which pistons, loose leaves шатунных and radical bearings, перешлифованы necks of a cranked shaft, отхонингованы cylinders have been replaced.
Therefore during time обкатки the repaired engine on the car do not subject to its maximum loadings. Обкатка the engine it should be spent with observance of those speeds of movement and loadings which are recommended for the period обкатки the car.