Pic. 5.20. Elements of the gas distribution mechanism of the AFT engine:
1 - Root covers of the camshaft; 2 - Nut; 3 - Camshaft; 4 - Key; 5 - Bolt; 6 - Cylinder head: 7 - Camshaft oil seal: 8 - Repair height of the cylinder head; 9 - Valves; 10 - Valve guide sleeve; 11 - Valve stem seal; 12 - Valve spring; 13 - Upper spring plate; 14 - Crackers; 15 - Hydraulic compensator.
Pic. 5.21. Elements of the gas distribution mechanism of engines 1F, ADZ:
1 - Root covers of the camshaft; 2 - Nut; 3 - Camshaft; 4 - Key; 5 - Bolt; 6 - Hydraulic compensator; 7 - Upper spring plate: 8 - Valve spring; 9 - Valve stem seal; 10 - Lower spring plate; 11 - Valve guide sleeve; 12 - Valves; 13 - Sealing plugs; 14 - Oiler; 15 - Camshaft seal; 16 - Cylinder head.
Axial clearance check
Check of an axial backlash of a camshaft by means of the indicator is shown on fig. 5.22.
Permissible axial clearance: 0.15 mm.
Valve sizes
Valve dimensions are shown in fig. 5.23.
AFT engine valve dimensions
1F engine valve sizes
ADZ engine valve dimensions
Camshaft identification
Main cam diameter: 34mm.
The camshaft identification is stamped between the intake and exhaust cams.
Camshaft identification is shown in fig. 5.24.
Valve timing at 1 mm valve lift
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