Diameter of the cylinder:       

 nominal        79,51 mm

 1st repair size       of 79,76 mm

 2nd repair size       of 80,01 mm

Directing plugs of the valve       

Internal diameter       of plugs 8,013 — 8,035 mm

Gap of rods of valves       of 1,3 mm (see the text)

Saddles of valves:       

Fig. 397. Check by the indicator of a gap of a core of the valve in the directing plug of the valve

Diameter of a saddle of the valve (see fig. 397 ):       

 inlet valves       of 35,70 mm

 final valves       of 31,40 mm

Tilt angle of a saddle       of the valve 45 °

Width of a saddle of the valve (the size "s", see fig. 397 ):       

 inlet valves       of 2,7 mm

 final valves       of 1,6 mm

External adjustment corner       15 °

Valves       

Diameter of a plate of the valve:       

 inlet valves       of 35,95 mm

 final valves       of 31,45 mm

Length       of the valve 96,85

Diameter of a rod of the valve:       

 inlet valves       of 7,97 mm

 final valves       of 7,95 mm

Thickness of edge of the valve       Not less than 0,5 mm

Fig. 399. Measurement of depth of an at additional processing of saddles of valves (it is shown by shooters)

The size "a" (see fig. 399 ):       

 inlet valves       of 35,7 mm

 final valves       of 31,4 mm

Pistons       

Place of measurement of diameter of the piston       of 10,0 mm from a bottom of a skirt of the piston at an angle in 90 ° to an axis of a piston finger

Diameter of the piston:       

 nominal diameter       of 79,48 mm

 1st repair size       of 79,73 mm

 2nd repair size       of 79,98 mm

Max. admissible wear of the piston       of 0,04 mm

Gap of pistons:       

 normal       0,03 mm

 maximum permissible       0,07 mm

Gap between piston rings and flutes:       

 kompressionny (top)       0,06 — 0,09 mm

 kompressionny (average)       0,05 — 0,08 mm

 maslosjemny       0,03 — 0,06 mm

 maximum permissible

 (kompressionny)       0,25 mm

 maximum permissible

 (maslosjemny)       0,15 mm

Thermal gap:       

 the normal — kompressionny

 piston rings       0,20 — 0,40 mm

 the normal — maslosjemny

 ring       0,25 — 0,50 mm

 maximum permissible       1,0 mm

Arrangement of locks piston

rings       Through everyone 120 °

Diameter of a piston finger       of 26,0 mm

Rods       

Axial gap       of the bearing 0,05 — 0,31 mm

Maximum permissible       0,37 mm

Cranked shaft       

Number of radical       bearings 5

Designation of radical bearings       From 1 to 5, since a forward part of the engine

Adjustment of an axial gap       Adjusting washers

Radical and shatunny bearings       Thin-walled loose leaves of bearings

Axial gap of a cranked shaft:       

 normal       0,07 — 0,17 mm

 maximum permissible       0,37 mm

Gap of the radical bearing:       

 normal       0,03 — 0,08 mm

 maximum permissible       0,17 mm

Gap of the shatunny bearing:       

 normal       0,03 — 0,076 mm

 maximum permissible       0,08 mm

Max. violation of rotundity of necks of bearings       of 0,03 mm

Diameter of a neck of the radical bearing (admission, mm):       

 nominal diameter       of 54,00 mm

 1st repair       53,75 mm

 2nd repair       53,50 mm

 3rd repair       53,25 mm

Diameter of necks of bearings of a rod:       

 nominal diameter       of 47,80 mm

 1st repair       47,55 mm

 2nd repair       47,30 mm

 3rd repair       47,05 mm

Width of loose leaves of bearings       of 20 mm

System of greasing of the engine       

Pressure in system of greasing       Not less than 2,0 bar

                                                       [200 kPas]

The minimum pressure in greasing system (operation of a control lamp)       0,15 — 0,75 bar

                                                                                                                                              [15–75 kPas]

Amount of oil in the engine which it is necessary to fill in at oil replacement:       

 with change of the filter       of 4,5 l

 without change of the filter       of 4,0 l

System of cooling of the engine       

Pressure of opening of the reduktsionny       valve 1,4 — 1,6 bar

                                                                                  [140–160 kPas]

Pressure of opening of the valve of depression       0,06 — 0,1 bar

                                                                            [6–10 kPas]

Thermoswitch       

Temperature of inclusion of the 1st step       92 — 97 ° C

Temperature of switching off of the 1st step       84 — 91 ° C

Temperature of inclusion of the 1st step       99 — 105 ° C

Temperature of switching off of the 2nd step       91 — 98 ° C

Thermostat       

Temperature of opening       85 ° C

It is completely opened       105 ° by C

Course       of 7,0 mm