Disassembling the engine (Scorpio 1)

V6 Engine

Bent wire for extracting valve lifters

If possible, install the engine on a stand; if not, install it in such a way that the engine cannot be damaged when loosening tightly tightened nuts and bolts.

When disassembling, it is very important to maintain cleanliness to prevent contamination of the disassembled components. Before disassembling, clean the outside of the engine with kerosene or, if very dirty, with solvent.



If there is no special stand for disassembling the engine, disassemble it on a wooden stand. Do not disassemble it directly on a concrete floor, as concrete particles will become a source of contamination.

When the parts are removed from the engine, wash them in kerosene. Never immerse parts with internal lubrication channels in kerosene; such parts should be thoroughly wiped with a cloth soaked in kerosene, and the lubrication channels should be cleaned with a wire rope.

It is recommended to store small parts in suitable containers, so that the parts do not get lost and do not have to be searched for during subsequent assembly.

When disassembling the engine, save the old gaskets; they will serve as a sample for making gaskets if new ready-made gaskets are not available.

Although the following parts can be removed separately, i.e. without removing the engine, it is recommended that they be removed during engine dismantling after the engine has been removed:

• carburetor or fuel injection system components;
• distributor;
• fuel pump;
• water pump;
• alternator;
• power steering pump (when disconnected from the system).

Attention! This describes disassembly of a carburetor engine. Disassembly of engines on models with fuel injection is performed in a similar manner, taking into account that when removing parts of the fuel injection system, attention should be paid to the exact location of the parts so that they can subsequently be correctly installed in their original places.

1. Drain the oil into a suitable container (if this has not been done previously).



2. Unscrew the oil filter using a belt or chain wrench.

3. Remove the oil dipstick.

4. In some models of cars, unscrew the special nut with a 37 mm wrench, which secures the extension bracket to the oil radiator. Remove the bracket together with the washers and sealing ring. Unscrew the central bushing and remove the oil radiator together with the gasket.

5. Remove the clutch. Pay attention to the installation position of the clutch disc.

6. Remove the engine support brackets.

7. Remove the power steering pump and drive belt.

8. Unscrew the distributor clamping flange mounting bolt and remove the distributor from the cylinder block.

9. Remove the two bolts that secure the power steering pump drive belt idler pulley bracket to the top cover and remove the bracket and pulley.

10. Loosen the alternator mounting bolts and lift the alternator, remove the fan belt. Unscrew the three bolts that secure the alternator support bracket to the cylinder block, and remove the alternator with the bracket.

11. Remove the fan and pulley from the water pump.

12. Disconnect the fuel line from the carburetor and remove the crankcase ventilation valve (if installed) from the cylinder head cover.

13. Loosen the mounting clamps and disconnect the hose from the water outlet fitting and the bypass hose from the thermostat housing.

14. Unscrew the four mounting bolts, remove the carburetor and intermediate flange from the intake manifold.

15. Unscrew the cylinder head cover bolts and remove the covers.


16. Unscrew the valve rocker arm axle mounting bolts and remove the axles (left picture) and oil deflector shields (right picture). Pay attention to the direction of installation of the shields. Mark the valve rocker arm axles for subsequent installation in their original places.





17. Remove the pushrods. Place them next to the corresponding rocker arm axles for reinstallation in their original locations.

18. Loosen the intake and exhaust manifold mounting bolts and remove the manifolds. Since sealant is used when installing the intake manifold, it is necessary to use a screwdriver to detach the manifold, but never place the screwdriver between the mating surfaces of the intake manifold and the cylinder block.

19. Sequentially unscrew the cylinder head mounting bolts; the order of unscrewing the bolts should be the reverse of the order of tightening them.

20. Remove the cylinder heads. If the head does not come off, it is necessary to break the seal between the cylinder block and the head by shaking the head. If this does not help, you can try to free the head with sharp blows from a hammer with a soft striking part. Under no circumstances should you hit the head directly with a metal hammer: this can destroy the fragile casting. You also cannot separate the head by inserting a screwdriver or chisel between it and the cylinder block, since this can damage the mating surfaces of these parts.



21. Remove the cylinder head gaskets.

22. Remove the two bolts that secure the fuel pump to the block, then remove the pump, gasket and transmission linkage.

23. Unscrew and remove the oil pressure sensor.

24. Unscrew the bolt that secures the crankshaft pulley and remove the pulley. If the pulley is secured to a vibration damper, also unscrew the damper's central bolt.

25. Mark the position of the flywheel relative to the crankshaft so that it can be installed in the same position later.

26. Lock the flywheel, then unscrew the six bolts that secure the flywheel to the crankshaft and remove the flywheel.

27. Remove the rear engine plate.


28. Place the engine on its end and use a bent copper wire (see Fig. Bent wire for extracting valve tappets) to extract the valve tappets. Place the tappets on the corresponding tappet rods so that they can be installed in the same holes later.



29. Unscrew the oil pan mounting bolts and remove the pan and pan gasket.

30. Unscrew the intake pipe from the oil pump and remove the gaskets.


31. Unscrew the two bolts (indicated by arrows in the figure on the left) and remove the oil pump. Remove the drive shaft (indicated by arrow in the figure on the right) of the oil pump, paying attention to the installation position.



32. Remove the clutch housing cover.



33. Unscrew the rear hose of the cooling system thermostat. Remove the gasket.

34. Remove the bolts that secure the water pump to the timing cover and remove the water pump.

35. Unscrew the thermostat housing bolts, remove the housing and take out the thermostat. Disconnect the rear water line pipe.

36. Unscrew the bolts that secure the timing cover to the front of the cylinder block and remove the cover.

37. Remove O-rings that cannot be reused.



38. Unscrew the bolt that secures the camshaft gear to the camshaft and remove the gear.



39. Unscrew the front intermediate plate mounting bolts and remove the intermediate plate.



40. Unscrew the two camshaft thrust flange mounting bolts and remove the camshaft together with the thrust ring, then remove the leaf spring and gasket.



41. If it is necessary to remove the crankshaft gear, use a regular puller for removal.


42. Check the identification marks on the connecting rod bearing caps and connecting rods (left illustration) to ensure that the caps match the connecting rods and to subsequently install the component groups in their proper locations. The piston crowns have marks (arrows) pointing to the front (right illustration). The arrows on the piston crown should point toward the front of the engine.

43. Unscrew the connecting rod cap nuts and place them on one side in the order in which they were removed.

44. Remove the connecting rod caps and store them in the correct order, paying attention to the installation direction. Also ensure that the bearings are stored with the corresponding connecting rods, unless they are to be replaced. If the connecting rod caps do not come off, tap them lightly with a soft-faced hammer.



45. To remove the bearing, press it against the groove in the connecting rod and cover, the bearing will come off easily.

46. Using the hammer handle, push the piston and connecting rod up out of the cylinder from below.



47. Check that the main bearings have identification marks to ensure that they are installed in the correct positions during assembly. The bearing caps are numbered (indicated by arrows A and B), and the arrow points to the front of the engine. Note that on the 2.8L engine, caps numbered 2 and 3 are secured with longer, convex-head bolts.

48. Unscrew the mounting bolts and remove the main bearing caps and lower bearing shells; the liners should be stored with the appropriate lids.

49. When removing the rear main bearing cap, remember that it also holds the rear crankshaft seal ring.

50. When removing the main bearing cap No.3, pay attention to the location of the two thrust half rings.

51. Remove the crankshaft from the crankcase and remove the rear seal ring.

52. Remove the lower main bearing shells and the upper thrust half rings of bearing No.3 from the crankcase and place them for storage with the corresponding main bearing caps.