Thermostat
1 – thermostat housing; 2 – sealing ring; 3 – thermostat; 4 – retainer
Camshaft chain drive
1 – crankshaft oil deflector ring; 2 – camshaft sprocket; 3 – sprocket mounting bolts; 4 – fixing plate
1. Disconnect and remove the cooling system hose located on the side of the engine (the arrows indicate the hose fastening elements).
2. Drain the oil from the engine.
3. Disconnect the ignition distributor cap and remove it together with the high-voltage wires.
4. Unscrew the spark plugs.
5. Remove the oil filler cap together with the crankcase ventilation hose, having first disconnected the hose from the intake manifold.
6. Unscrew the mounting bolts and remove the carburetor, having first disconnected the fuel and vacuum pipes.
7. Unscrew the three bolts securing the thermostat cover and remove the thermostat.
8. Remove the cylinder head cover, having first unscrewed the 4 bolts.
9. Remove the valve lever shaft assembly from the cylinder head by unscrewing 4 bolts.
10. Remove the valve lifter rods. When reusing them, they must be installed in the same places, so mark the lifters with tape or stack them so that they do not get mixed up when installing.
11. Unscrew the cylinder head mounting bolts in the reverse order of tightening and remove the head from the engine.
12. Unscrew the bolt of the clamping plate securing the ignition distributor to the engine cylinder block and remove it.
13. Remove the fuel pump.
14. Unscrew the 3 oil pump mounting bolts and remove it.
15. Unscrew the water pump pulley. To prevent the pulley from turning when unscrewing the bolts, you can use a gas wrench or squeeze the two branches of the drive belt tightly.
16. Loosen the lower mounting bolts, unscrew the upper generator tension bolt, tilt the generator toward the engine and remove the drive belt.
17. Unscrew the generator bracket mounting bolts and remove the generator.
18. Unscrew the water pump mounting bolts and remove the pump.
19. Remove the pulley from the crankshaft.
20. Place the engine horizontally and remove the oil pan.
21. Remove the camshaft drive chain cover (see fig. Camshaft drive chain).
22. Remove the oil deflector ring from the crankshaft.
23. Remove the chain tensioner.
24. Remove the sprocket from the camshaft together with the chain, having first bent back the plate securing the sprocket mounting bolts and unscrewed the bolts.
25. Unscrew the two bolts and remove the camshaft mounting plate.
26. Rotate the camshaft a few revolutions to remove the tappets from contact with the camshaft. The engine must be in a horizontal position.
27. Remove the valve lifters and mark them with tape so that they will fall into place when reassembled.
28. Remove the camshaft from the engine cylinder block.
29. Use a puller to remove the sprocket from the crankshaft.
30. Check the numbers on the connecting rod caps and connecting rods, as well as their position. Connecting rod #1 is on the timing drive side, and the numbers are on the camshaft side.
31. Unscrew the connecting rod cover and remove it together with the connecting rod bearing.
32. Remove the piston with the connecting rod.
33. Remove the remaining pistons in the same manner.
34. Unscrew the bolts that secure the clutch drive part to the flywheel alternately in a cross pattern, blocking the flywheel ring gear with a screwdriver.
35. Remove the drive part and the clutch disc.
36. Unscrew the flywheel mounting bolts and, being careful, remove the flywheel.
37. Remove the rear engine shield.
38. Unscrew the bolts and remove the crankshaft rear seal ring cover.
39. Check the markings on the crankshaft main bearing caps. The letters indicate: F – front, C – middle and R – rear main bearing caps. The arrows on the caps should point towards the timing drive. Unscrew the main bearing cap mounting bolts and remove the caps.
40. Remove the crankshaft.
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