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

Disconnect a negative wire of the storage 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 heads of the block of cylinders. Make sure that the engine cold.

Remove a driving belt.

Remove the right incorporated shaft from the intermediate driveshaft.

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

Remove the bottom 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. Bottom cap of the block of cylinders: 1–cap

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

Fig. 2.80. Installation of the special device

Establish the special adaptation (fig. 2.80).

Turn a cranked shaft clockwise to VMT of the piston of the cylinder No. 1.

Weaken a chain of a drive of the mechanism of a gazoraspredeleniye.

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

б) Turn a cam-shaft of a drive of final valves clockwise, using the corresponding wrench (shestigrannik) and weaken a chain of a drive of the mechanism of a gazoraspredeleniye.

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

в) 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, fix directing to a chain in the provision of easing (fig. 2.81).

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

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

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

Remove an asterisk of a cam-shaft of a 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 Head of the block of cylinders and a cover of bearings of a cam-shaft are numbered for simplification of their repeated installation in initial situation at assembly. After removal 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.

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

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

admission – 0,25 mm;

release – 0,30 mm.

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 should be in situation VMT.

Fig. 2.85. Order of a 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 a drive of final valves (see fig. 2.83).

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

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

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

Remove a bolt (M6х1,0, length of 25-35 mm) from a forward cover of the engine to pull a chain of a drive of the mechanism of a gazoraspredeleniye.

Turn a cranked shaft clockwise to VMT of the piston of the cylinder No. 1.

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

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

Remove the special adaptation from a cam-shaft.

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

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

Put silicon and organic hermetic on the top cap of a forward cover of the engine.

Establish the top cap of a forward cover of the engine, having tightened it the moment of an inhaling of 10 N · m.

Establish the bottom cap of the block of cylinders, having tightened it the moment of an inhaling of 18-22 N · m.

Establish a new bottom cap of a forward cover of the engine, having tightened it the moment of an inhaling of 12 N · m.

Establish the right intermediate shaft of a drive and the incorporated 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.