Gas distribution system
1 - timing chain housing, 2 - housing gasket, 3 - intermediate plate, 4 - plate gasket, 5 - camshaft sprocket, 6 - timing chain, 7 - chain tensioner sprocket, 8 - ball bearing, 9 - eccentric, 10 - bushing, 11 - slider, 12 - valve lever shaft, 13 - valve lever shaft holder, 14 - valve lever, 15 - valve lever shaft lock holder, 16 - valve lever shaft installation spring, 17 - flat washers, 18 - tappet, 19 - tappet rod, 20 - exhaust valve, 21 - intake valve, 22 - valve spring support plate fastening crackers, 23 - upper valve spring support plate, 24 - spring valve, 25 – lower support plate of the valve spring, 26 – valve stem seal
Crank mechanism
1 - crankshaft, 2 - pulley, 3 - sprocket, 4 - sealing ring, 5 - centering sleeve of the primary shaft of the gearbox, 6 - flywheel, 7 - washer for fixing the flywheel mounting bolts, 8 - main bearing shells, 9 - crankshaft thrust half rings, 10 - rear main bearing seals, 11 - connecting rod bolt, 12 - connecting rod, 13 - connecting rod head bushing, 14 - connecting rod bearing shell, 15 - piston, 16 - piston pin, 17 - oil scraper ring, 18 - lower sealing ring, 19 - upper sealing ring (compression)
When the sprocket is correctly installed on the crankshaft, the mark (1) should be visible
Timing chain and sprocket alignment marks
Tension of the gas distribution system drive chain
Removal the timing chain tensioner
1. Install (with the side with the installation mark facing out) the chain sprocket together with the key onto the crankshaft.
2. Install the fuel pump drive sprocket holder flange together with the oil supply line.
3. Install the timing chain tensioner.
4. Install the fuel pump drive sprocket and turn the crankshaft so that the piston in the 1st cylinder is at TDC.
5. Install the timing chain so that its red markings match the markings on the camshaft and fuel pump sprockets, and the white markings match the markings on the crankshaft sprocket.
6. Install the chain tensioner sprocket together with the eccentric and tension the chain so that there is a gap of 0.5–1 mm between the tensioner cheek and its holder. Tighten the tensioner roller.
7. Replace the timing chain housing sealing ring and screw the housing on.