6.11. Camshaft

Note

Fig. 3.4-62. Valvate mechanism: 1 – valve; 2 – head of the block of cylinders; 3 – valve of restriction of pressure of 2,7 bars, 25 N · m; 4 – maslootrazhatelny cap; 5 – valve spring; 6 – plate of a valve spring; 7 – crackers; 8 – lever support; 9 – sealing ring;
10 – forward cover of the bearing of the camshaft of inlet valves; 11 – the cap-type nut, 15 N · m; 12 – bearing cover; 13 – bolt, 10 N · m; 14 – nut, 10 N · m; 15 – the cap-type nut, 15 N · m; 16 – back cover of the bearing of the camshaft of final valves; 17 – camshaft of inlet valves; 18 – camshaft of final valves; 19 – lever; 20 – hydraulic pusher; 21 – persistent half rings


Before installation it is necessary to grease working surfaces of hydraulic pushers of 20 (fig. 3.4-62) with engine oil.

Removal
Before a detachment of the rechargeable battery find out whether you have a code of turning on of the radio receiver.
Switch off ignition and disconnect a wire of "weight" from the rechargeable battery.
Uncover a head of the block of cylinders.
Take off a gear belt from camshaft pulleys.

Fig. 3.4-55. An arrangement of bolts of fastening of the directing roller and a back casing of a gear belt



Unscrew bolts and remove back casings of a gear belt (see fig. 3.4-55, 3.4-58).

Fig. 3.4-58. Arrangement of bolts of fastening of a back casing of a gear belt



Unscrew forward and back covers of bearings of the camshaft of inlet valves (see fig. 3.4-62).

Fig. 3.4-63. Arrangement of nuts and bolts of fastening of covers of bearings of camshafts



Unscrew covers of bearings 0, 3, 4, 7 and 8 of camshafts (fig. 3.4-63).
Gradually cross-wise unscrew covers of bearings 2 and 6 and remove the camshaft of final valves.
Gradually cross-wise unscrew covers of bearings 1 and 5 and remove the camshaft of inlet valves.

Installation
Make sure that the bent shaft is recorded by the adjusting screw 3242.
Unscrew the hairpin located in a camshaft end face from a head of the block of cylinders.
Make sure that persistent half rings are in the place.
Check a state and the provision of yokes and hydraulic pushers.

Fig. 3.4-64. Use of device 3458 for the correct installation of camshafts



Install the camshaft of inlet valves into place so that in an end face of a shaft it was possible to install adaptation 3458 (fig. 3.4-64).
Establish covers of bearings 1 and 5 and fix them by bolts.
Establish covers of bearings 2 and 6 and fix them by bolts.
Establish covers of bearings 0, 3, 4, 7, 8 and fix them by bolts.
Repeatedly check the provision of yokes and hydraulic pushers.
Clear privalochny surfaces on a head of the block of cylinders and extreme covers of the camshaft.

Fig. 3.4-65. The place of drawing a layer of sealant on the right internal back cover



Apply a thin layer of sealant (fig. 3.4-65) on a privalochny surface of the right internal back cover.

Fig. 3.4-66. The place of drawing a layer of sealant on an external back or forward right cover.



Apply on the interfaced surface of an external back or forward right cover a thin layer of sealant (see fig. 3.4-66).
Establish external covers.
Further installation is carried out to the sequences, the return to removal.
Establish a cover of a head of the block of cylinders.
Establish a gear belt.
Wait 30 minutes before launch of the engine: hydraulic pushers have to come to the normal state, otherwise pistons can hit against valves.