Gas distribution system
1 - timing chain cover, 2 - cover gasket, 3 - intermediate plate, 4 - plate gasket, 5 - camshaft sprocket, 6 - timing chain, 7 - chain tensioner sprocket, 8 - ball bearing, 9 - eccentric, 10 - sleeve, 11 - slider, 12 - valve lever axis, 13 - valve lever axis holder, 14 - valve lever, 15 - valve lever axis blocking holder, 16 - valve lever axis setting spring, 17 - flat washers, 18 - pusher, 19 - pusher rod, 20 - exhaust valve, 21 - intake valve, 22 - crackers for fastening the valve spring support plate, 23 - upper valve spring support plate, 24 - valve spring, 25 - lower valve spring support plate, 26 - stem seal valve
Crank mechanism
1 - crankshaft, 2 - pulley, 3 - sprocket, 4 - sealing ring, 5 - centering sleeve of the input shaft of the gearbox, 6 - flywheel, 7 - washer for fixing the flywheel mounting bolts, 8 - main bearing shells, 9 - thrust half rings of the crankshaft shaft, 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 - top sealing ring (compression)
When the sprocket is correctly installed on the crankshaft, the sign (1) should be visible
Setting signs of sprockets and drive chain of the gas distribution system
Timing chain tension
Removing the timing chain tensioner
1. Install (label side out) chain sprocket together with the key on the crankshaft.
2. Install the fuel pump drive sprocket retainer flange with the oil feed 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 those on the camshaft and fuel pump sprockets, and the white markings match those on the crankshaft sprocket.
6. Install the chain tensioner sprocket together with the eccentric and tighten the chain so as to obtain a gap of 0.5–1 mm between the tensioner jaw and its holder. Tighten the tensioner pulley.
7. Replace the O-ring on the timing chain cover and screw on the cover.
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