Removal of a gear belt of the GRM drive is carried out in the following order:

– disconnect the contact socket from the electromagnetic valve of a stop of the engine;

– remove the case of the air filter;

– remove a vekhny casing of the engine (AFN engine);

Fig. 3.64. GRM drive details: 1 – lower cover of the GRM drive; 2 – pulley of a bent shaft; 3 – belt of the drive of auxiliary units; 4 – bolt of fastening of a pulley of a bent shaft; 5 – bolt of fastening of the cogged pulley of a bent shaft; 6 – gear belt of the GRM drive; 7 – tension roller of a gear belt of the GRM drive; 8 – bolt of fastening of a tension roller; 9 – bolts of fastening of the top cover of the GRM drive; 10 – top cover of the GRM drive; 11 – back cover of the GRM drive; 12 – back arm of fastening of TNVD; 13 – TNVD; 14 – forward arm of fastening of TNVD; 15 – TNVD cogged pulley; 16 – pulley of an intermediate shaft; 17 – bolt of fastening of a pulley of an intermediate shaft; 18 – cogged pulley of a bent shaft; 19 – the lower cover of the GRM drive (for completely closed drive); 20 – the top cover of the GRM drive (for completely closed drive); 21 – a back cover of the GRM drive (for completely closed drive)

– remove metal spring brackets and plastic percussion caps or bolts of 9 (fig. 3.64) of fastening of the top cover of the GRM drive and remove the top cover 10 or 20;

– take off a belt of the drive of auxiliary units;

– turn off bolts of fastening of a pulley of the water pump and remove a pulley;

– install the piston of the cylinder No. 1 in compression step VMT (see subsection 3.3.3);

– turn off bolts 4 fastenings of a pulley of a bent shaft and remove a pulley 2;

– turn off bolts of fastening and remove brackets of fastening of the lower cover of the 1 or 19 GRM drive.

AAZ engine:

Fig. 3.63. Latching of a pulley of TNVD: 1 – the stopping core; 2 – TNVD cogged pulley; 3 – forward arm of fastening of TNVD

– check reliability of fixing of a pulley of TNVD the stopping core 1 (see fig. 3.63 );

– turn off external bolts of fastening of a pulley of TNVD half way;

PREVENTION Do not turn off the central bolt of a pulley of TNVD as it will change installation of the moment of injection of fuel.

– weaken a tension of a gear belt 6 (see fig. 3.64 ) the GRM drive, having turned off a bolt of the 8th fastening of a tension roller.

Other engines:

– turn off a bolt of the 8th fastening of a tension roller and shoot a tension video of the 7th gear belt of the GRM drive.

All engines:

– note a marker the direction of the movement of a gear belt 6 of the GRM drive in case you repeatedly establish it;

– take off a gear belt 6 of the GRM drive.

After removal examine a gear belt. With wear, stratification and other damages the belt needs to be replaced. In the presence of engine oil on a belt it is necessary to find the place of leak and to eliminate this leak.

Installation of a gear belt of the GRM drive is carried out in the following order:

Fig. 3.65. Removal of the cogged pulley from an adjusting cone of the camshaft: 1 – bolt of fastening of the cogged pulley of the camshaft; 2 – cogged pulley of the camshaft; 3 – drift

– weaken a bolt of 1 (fig. 3.65) of fastening of the cogged pulley of the camshaft on a half of a turn;

– remove the cogged pulley 2 of the camshaft from an adjusting cone of the camshaft 4, by means of the drift passed through an opening in a back cover of the GRM drive;

– install a gear belt 6 (see fig. 3.64 ) on the cogged pulley 18 of a bent shaft, the cogged pulley 15 TNVD and the cogged pulley 2 (see fig. 3.65 ) the camshaft;

– establish a gear belt 6 by the flat party on a pulley of the 16th intermediate shaft and a tension roller 7.

All engines, except AAZ

– establish the directing roller of a gear belt on a back cover of the GRM drive and tighten a bolt of its fastening;

AAZ engine

– tighten external bolts of fastening of the TNVD cogged pulley;

All engines:

– remove the stopping core 1 (see fig. 3.63 ) TNVD pulley;

– be convinced that the right leading branch of a gear belt of the GRM drive passing through pulleys of TNVD and an intermediate shaft is tense, and the conducted belt branch from a tension roller — sags;

– pull a gear belt of the GRM drive povroty a tension roller clockwise and tighten a bolt of fastening of a tension roller or on the engine with the semi-automatic mechanism of a tension of a gear belt turn a tension roller 7 before combination of tags 8 on a roller and a nave of the mechanism of a tension;

– check a tension of a gear belt, having turned its branch between cogged pulleys of the camshaft and TNVD. The belt has to turn on a corner 90 °. If it turns on a smaller corner, then it is necessary to weaken its tension if on bigger — to pull a belt;

– tighten a bolt of fastening of the cogged pulley of the camshaft the moment of 45 N · m;

Fig. 3.62. Installation of device for latching of the camshaft: 1 – device for latching of the camshaft; 2 – camshaft

– remove adaptation 1 (see fig. 3.62 ) for latching of the camshaft;

Fig. 3.61. Combination of adjusting tags of a flywheel and case of coupling

Fig. 3.5. The provision of adjusting tags of the cogged pulley of the camshaft of SOHC engines corresponding to VMT of the piston of the first cylinder: 1 – head of the block of cylinders; 2 – cogged pulley; 3 – block head cover; And – an adjusting tag

Fig. 3.67. Combination of tags on the cogged pulley and an arm of fastening of TNVD

– check combination of all adjusting tags: a flywheel (see fig. 3.61 ), the cogged pulley of the camshaft (see fig. 3.5 ) and the TNVD cogged pulley (fig. 3.67) ;

– turn a bent shaft on two whole revolutions clockwise and repeatedly install the piston of the cylinder No. 1 in compression step VMT, be convinced that the stopping core 1 (see fig. 3.63 ) can be freely established in an opening of the TNVD cogged pulley;

– check and adjust if necessary a tension of a gear belt of the GRM drive;

– establish lower 1 or 19 (see fig. 3.64 ) and top the 10 or 20 GRM drive covers;

– establish a pulley of the water pump and tighten bolts of its fastening;

– establish a pulley 2 bent shafts and tighten bolts 4 of its fastenings;

– establish a belt 3 drives of auxiliary units and adjust its tension;

– connect the contact socket of the electromagnetic valve of a stop of the engine;

– check installation of the moment of injection of fuel.