2.2.4.5. Adjustment of thermal gaps in the mechanism of the drive of valves

Disconnect a negative wire of the rechargeable battery.

Remove the right wheel.

Remove the right mudguard.

Turn out spark plugs.

Disconnect a high-voltage wire.

Disconnect the socket of the operating oil valve (OCV).

Remove a ventilation hose.

Uncover a head of the block of cylinders. Make sure that the engine cold.

Take off a driving belt.

Remove the right integrated shaft from the intermediate driveshaft.

Fig. 2.78. Lower cap of a forward cover of the engine: 1 – cap

Remove the lower cap of a forward cover of the engine (fig. 2.78).

Remove the top cap of a forward cover of the engine.

Fig. 2.79. Lower cap of the block of cylinders: 1 – cap

Remove the lower cap of the block of cylinders (fig. 2.79).

Fig. 2.80. Installation of the special device

Install special adaptation (fig. 2.80).

Turn a bent shaft clockwise to cylinder No. 1 piston VMT.

Weaken a gas distribution mechanism drive chain.

a) Using the suitable screw-driver or the similar tool, unblock a ratchet of a natyazhitel of a chain.

b) Turn a cam-shaft of the drive of final valves clockwise, using the corresponding wrench (hexagon) and weaken a gas distribution mechanism drive chain.

Fig. 2.81. Fixing of the directing chain in the provision of easing

c) Having placed the corresponding bolt (M6 1,0 length of 25-35 mm) in an opening of the top cap of a forward cover of the engine, record a chain guide in the provision of easing (fig. 2.81).

Fig. 2.82. Fixing of cam-shafts of the drive of final valves

Record a cam-shaft of the drive of final valves, using the corresponding key (hexagon) (fig. 2.82).

Fig. 2.83. Lower cap of the block of cylinders: 1 – asterisk of a cam-shaft of inlet valves

Remove an asterisk of a cam-shaft of the drive of final valves (fig. 2.83).

Fig. 2.84. Order of weakening of bolts of a cam-shaft

Weaken cam-shaft bolts in stages in that order (fig. 2.84).

NOTE The head of the block of cylinders and cover of bearings of a cam-shaft are numbered for simplification of their repeated installation in initial situation at assembly. After removal you hold covers together with a head of the block of cylinders from which they were removed. Do not mix a cover.

Remove a cam-shaft.

Remove a valve pusher.

Vybrerite the corresponding adjusting laying, being guided by the following scheme and records made during initial check:

new adjusting laying = the removed laying + the measured valvate gap – a standard valvate gap.

admission – 0,25 mm;

release – 0,30 mm.

The standard (on the cold engine):

admission – 0,22–0,28 mm (0.25±0.03 mm);

release – 0,27–0,33 mm (0.30±0.03 mm).

Establish a cam-shaft, the piston of the cylinder No. 1 has to be in the provision of VMT.

Fig. 2.85. Order of tightening of bolts of a cam-shaft

Tighten a cam-shaft bolt in two steps (fig. 2.85):

moment of 5,0-9,0 N · m;

moment of 14,0-17,0 N · m.

Establish an asterisk of a cam-shaft of the drive of final valves (see fig. 2.83).

NOTE Do not tighten a bolt of an asterisk of the camshaft. At first check the moment of opening or closing of the valve, then tighten a bolt.

Fig. 2.86. Installation of special adaptation on a cam-shaft

Install special adaptation (fig. 2.86) on a cam-shaft.

Remove a bolt (M6x1,0, length of 25-35 mm) from a forward cover of the engine to pull a gas distribution mechanism drive chain.

Turn a bent shaft clockwise to cylinder No. 1 piston VMT.

Hold a cam-shaft of the drive of final valves, using a suitable wrench (hexagon) (see fig. 2.82).

Tighten a bolt of an asterisk of a cam-shaft of the drive of final valves the moment of an inhaling of 69-75 N · m.

Remove special adaptation from a cam-shaft.

Remove special adaptation from an opening of the lower cap of the block.

Turn a bent shaft clockwise on two turns to the provision of VMT. If the provision of VMT is not reached, weaken a bolt of a pulley of a bent shaft and perform all operations, since installation of special adaptation (see fig. 2.80).

Apply silicon and organic sealant on the top cap of a forward cover of the engine.

Establish the top cap of a forward cover of the engine, having tightened its moment inhalings of 10 N · m.

Establish the lower cap of the block of cylinders, having tightened its moment inhalings of 18-22 N · m.

Establish a new lower cap of a forward cover of the engine, having tightened its moment inhalings of 12 N · m.

Establish the right intermediate shaft of the drive and the integrated shaft.

Establish a driving belt.

Establish a cover of a head of the block of cylinders.

Attach a ventilation hose.

Connect the socket of the operating oil valve (OCV).

Connect a high-voltage wire.

Screw spark plugs.

Establish the right mudguard.

Establish the right wheel.