The main chain drives the exhaust camshafts from the drive sprocket on the crankshaft (see illustration 2.0).
The exhaust camshaft sprockets have smaller diameter sprockets from which the intake camshafts are driven by separate chains (see illustrations 2.0a and 2.0b).
2.0. Timing gear drive:
1 - camshaft drive sprocket hub
2 - spacer washer of the sprocket hub mounting bolt
3 - a bolt of fastening of a nave. Tightening torque - 42 Nm
4, 24 - chain damper fastening bolt. Tightening torque - 10 Nm
5 - a bolt of fastening of an adjusting washer. Tightening torque: 1st pass-5 Nm; 2nd pass - tighten 90°. To be replaced after each disassembly
6 - camshaft sprocket adjusting washer
7 - an asterisk of a camshaft of final valves of the left head of the block of cylinders
8, 11 - chain damper fastening bolt. Tightening torque - 10 Nm
9 - the purpose of the exhaust camshaft drive
10 - upper chain damper
12 - a bolt of fastening of a flange and a hub of an asterisk of a camshaft. Tightening torque - 10 Nm
13 - flange and hub of the exhaust camshaft sprocket
14 - damper sealing ring. To be replaced after each disassembly
15 - adjusting washer
16 - sprocket of the exhaust camshaft of the right cylinder head
17 - a bolt of fastening of a persistent shoe of a chain tensioner. Tightening torque - 10 Nm
18 - O-ring chain tensioner. To be replaced after each disassembly
19 - chain tensioner
20 - tensioner mounting bolt. Tightening torque - 10 Nm
21 - chain tension stop shoe
22 - belt pulley on the crankshaft
23 - chain guide
2.0a. Inlet camshaft drive on the left cylinder head:
1 - a bolt of fastening of a chain damper. Tightening torque -10 Nm
2 - a bolt of fastening of a tensioner of a chain. To be replaced after each disassembly. Tightening torque: 1st pass - 5 Nm; 2nd pass - tighten 90°
3 - washer of the bolt of fastening of the sprocket of the camshaft of the inlet valves
4 - a bolt of fastening of an asterisk of a camshaft of inlet valves. To be replaced after each disassembly. Pre-tightening torque - 40 Nm; final tightening torque: 1st pass - 100 Nm; 2nd pass - tighten 90°
5 - intake camshaft sprocket
6 - a bolt of fastening of a regulator of position of a camshaft of inlet valves. To be replaced after each disassembly. Pre-tightening torque - 40 Nm; final tightening torque: 1st pass - 100 Nm; 2nd pass - tighten 90°
7 - gear wheel of the sensor of position of a camshaft of inlet valves (hall sensor)
8- intake camshaft position regulator
9 - chain tensioner
10 - exhaust camshaft drive circuit on the left cylinder head
11 - washer with diamond coating. To be replaced after each disassembly
12 - chain damper
13 - cover of the camshaft position regulator / rear cover of the gas distribution mechanism
14 - gasket. To be replaced after each disassembly
15 - sleeve (2 pcs.)
16 - a bolt of fastening of a cover of a regulator. To be replaced after each disassembly. Tightening torque: 1st pass - 5 Nm; 2nd pass - tighten 90°
17 - flange and hub of the exhaust camshaft sprocket
18 - sprocket flange mounting bolt. Tightening torque - 10 Nm
19 - exhaust camshaft sprocket
20 - adjusting washer
21 - a bolt of fastening of an adjusting washer. To be replaced after each disassembly. Tightening torque: 1st pass - 5 Nm; 2nd pass - tighten 90°
22 - damper bar
Attention! Pre-tightening of the bolt is required due to the need to adjust the position of the camshaft position sensor gear on the governor.
2.06. Inlet camshaft drive on the right cylinder head:
1 - chain tensioner
2 - a bolt of fastening of a tensioner of a chain of a drive. To be replaced after each disassembly. Tightening torque: 1st pass - 5 Nm; 2nd pass - tighten 90°
3 - camshaft drive sprocket hub
4 - spacer washer of the sprocket hub mounting bolt
5 - a bolt of fastening of a nave. Tightening torque - 42 Nm
6 - a bolt of fastening of a regulator of position of a camshaft of inlet valves. To be replaced after each disassembly. Pre-tightening torque - 40 Nm; final tightening torque: 1st pass - 100 Nm; 2nd pass - tighten 90°
7 - gear wheel of the sensor of position of a camshaft of inlet valves (hall sensor)
8 - intake camshaft position regulator
9 - a bolt of fastening of a level of a damper. Tightening torque - 10 Nm
10 - damper bar
11 - adjusting washer
12 - drive chain
13 - washer with diamond coating. To be replaced after each disassembly
14 - cover of the camshaft position regulator / rear cover of the timing gear
15 - gasket. To be replaced after each disassembly
16 - sleeve (2 pcs.)
17 - damper bar
18 - a bolt of fastening of a cover of a regulator. To be replaced after each disassembly. Tightening torque: 1st pass - 5 Nm; 2nd pass - tighten 90°
19- exhaust camshaft sprocket
20- washer
21 - bolt for fastening the exhaust camshaft sprocket. Pre-tightening torque - 40 Nm; final tightening torque: 1st pass -100 Nm; 2nd pass - tighten 90°
22 - intake camshaft sprocket on the right cylinder head
23 - chain tensioner damper bar
24 - bolt. Tightening torque - 10 Nm
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