Removal of a head from the engine installed on the car is carried out in the following sequence:

– disconnect a wire from the negative plug of the rechargeable battery;

– remove the top casing from the engine;

– remove the protection cover from the ignition distributor;

– disconnect wires of high voltage from an ignition distributor cover;

– remove guides of wires of high voltage;

Fig. 3.43. Head of the block of cylinders of the AAA engine: 1 – cover of a head of the block of cylinders; 2 – nut of fastening of a cover of a head of the block of cylinders; 3 – laying of a cover of a head of the block of cylinders; 4 – camshaft bearing cover; 5 – head of the block of cylinders; 6 – GRM drive cover; 7 – bolt of fastening of a cover of the GRM drive; 8 – laying of a head of the block of cylinders; 9 – bolts of fastening of a head of the block of cylinders

– turn off nuts of 2 (fig. 3.43) of fastening of a cover of a head of the block of cylinders and uncover 1;

Fig. 3.44. Inlet collector: 1 – case of a butterfly valve; 2 – laying of the case of a butterfly valve; 3 – top section of an inlet collector; 4 – laying of the top section of an inlet collector; 5 – laying of the lower section of an inlet collector; 6 – bolt of fastening of the lower section of an inlet collector; 7 – lower section of an inlet collector; 8 – bolt of fastening of the top section of an inlet collector

– turn off bolts of 8 (fig. 3.44) of fastening of the top section of an inlet collector and remove the top section assembled with the case of a butterfly valve and the inlet pipeline;

Fig. 3.45. Final collector: 1 – nut of fastening of a casing of a final collector; 2 – casing of a final collector; 3 – a tube of removal of the fulfilled gases for verification of the contents of CO; 4 – sections of a final collector; 5 – nut of fastening of section of a final collector; 6 – laying of a final collector; 7 – hairpin of fastening of a casing of a final collector

– turn off nuts of 1 (fig. 3.45) of fastening of a casing of a final collector and remove a casing 2;

– turn off flange nuts and pick up the phone 3 removals of the fulfilled gases for verification of the contents of CO;

– turn off nuts of the 5th fastening of sections of a final collector and remove section 4;

– remove a GRM drive chain;

– remove the ignition distributor;

– remove a natyazhitel of a chain of the GRM drive;

– turn off bolts 7 (see fig. 3.43 ) fastenings of a cover of the GRM drive and uncover 6;

Fig. 3.46. Sequence of an inhaling of bolts of fastening of a head of the block of cylinders of the AAA engine

– turn off bolts of the 9th fastening of a goloka of the block of cylinders in the sequence, their return inhaling (fig. 3.46) , on one turn for one pass and remove bolts with washers;

– remove a head of the 5th block of cylinders;

– remove laying of the 8th head of the block of cylinders;

– turn off bolts 6 (see fig. 3.44 ) fastenings of the lower section of an inlet collector and remove the lower section 7.

Installation of a head of the block of cylinders is carried out in the following order:

– establish new laying 8 (see fig. 3.43 ) heads of the block of cylinders on adjusting pins the inscription "OBEN/TOP" up, check combination of all openings of laying with the corresponding openings of the block of cylinders;

– establish accurately a head of the 5th block of cylinders;

– insert bolts of the 9th fastening of a head of the block of cylinders with washers and wrap them manually;

PREVENTION At assembly it is recommended to establish new bolts of fastening of a head of the block of cylinders.

– tighten bolts of the 9th fastening of a head of the block of cylinders in the sequence shown in fig. 3.46 , at first by the moment of 40 N · m, then the moment of 60 N · also tighten m on 180 °;

– establish a GRM drive chain on asterisks of camshafts, check coincidence of adjusting tags;

– establish a cover of 1 head of the block of cylinders with new laying 3 and tighten nuts 2;

– establish the top section 3 (see fig. 3.44 ) an inlet collector and tighten bolts 8. At the same time first of all it is necessary to tighten fastening bolts to the lower section of an inlet collector, and then to a back support;

– execute other operations in the sequence, the return to removal.

After installation adjust an accelerator cable. After launch of the engine check tightness of connections of fuel system, cooling systems and production of the fulfilled gases.

PREVENTION If hydraulic pushers were replaced, do not launch the engine within 30 min. after completion of works.