Note. Remove the cylinder head on a cold engine
Removing
Removing the cylinder head of the M 102 engine
The order of tightening the bolts of the cylinder head of the engine M 102 | Checking the cylinder head bolts a - diameter b - length |
1. Disconnect the wire «masses» from the battery.
2. Raise the hood vertically up.
3. Remove the air filter with cold air intake.
4. On vehicles with a body positioner, unscrew the pump mounting bolts without disconnecting the hoses. Move the pump aside.
5. Drain the coolant.
6. Disconnect the connectors from the coolant temperature sensor, carburetor and injection system elements.
7. Disconnect the heater hoses, the radiator inlet hose, the carburetor fuel hoses, and on vehicles with an injection system, disconnect the fuel supply and drain hoses from the pressure regulator and fuel quantity distributor.
8. Disconnect the vacuum hoses.
9. Disconnect the throttle return spring.
10. Disconnect the throttle actuator rod from the lever.
11. Remove the intake manifold booster.
12. Remove the dipstick and plug the dipstick tube.
13. On cars with the conditioner disconnect from a head of cylinders of a tube of central air.
14. On vehicles with automatic transmission, unscrew the bolt securing the oil dipstick bracket to the cylinder head and disconnect the drive cable from the throttle rods.
15. Unscrew the wire tie «masses».
16. Depending on the year of manufacture of the vehicle, loosen and remove the alternator drive belt or accessory drive belt.
17. Turn away bolts of fastening of a reception pipe of mufflers to a final collector and separate them.
18. Disconnect the high voltage wire harness from the spark plugs.
19. Turn out spark plugs.
20. Remove a cover of the gauge distributor of ignition with a bunch of wires.
21. Turning the crankshaft by the pulley, bring the piston of the 1st cylinder to TDC.
22. Remove the chain tensioner plug.
23. Take out a sealing ring and a spring.
24. Mark the relative position on the chain and on the camshaft, depending on the engine model.
25. Block the camshaft from turning by placing a 24 mm wrench on the flats.
26. Remove the chain guide.
27. Remove the chain from the camshaft sprocket and hold it in a position that prevents it from jumping off the crankshaft sprocket.
28. Remove the camshaft sprocket by unscrewing the mounting bolt.
29. Turn away bolts of fastening of a head of cylinders in an order, the return to a tightening.
30. Disconnect the cylinder head from the gasket and block and remove it together with the nozzles.
31. Thoroughly clean the mating surfaces of the cylinder head and block. Do not clean the mating surface of the cylinder head. Take measures to prevent dirt from entering the head channels.
32. Check the condition of the removed parts. Check the flatness of the mating surface of the cylinder head. Eliminate the identified faults. If necessary, replace the cylinder head bolts.
Installation
Before installing the cylinder head, make sure all parts are clean. Check the stretching of the mounting bolts. Replace all gaskets.
1. Place the gasket with the inscription towards the cylinder head. Make sure that the mating surfaces of the cylinder head, block and gasket are dry and free from grease.
2. Lubricate the threads and bearing surface of the cylinder head bolts with engine oil.
3. Establish a head of cylinders and screw in bolts of fastening.
4. Tighten the bolts in the order shown in the figure.
5. To turn the bolt further, put a wrench on the bolt head so that it is directed along the longitudinal axis of the engine, and turn it 1/4 turn until it is perpendicular to the longitudinal axis of the engine.
6. Install the camshaft drive chain damper.
7. Put on a camshaft sprocket chain, ensuring that the alignment marks match.
8. Tighten the sprocket mounting bolts.
9. Insert the chain tensioner into the socket and install the spring.
10. Check up adjustment of the gas-distributing mechanism.
11. Install the cylinder head cover.
12. On engines, install the noise suppression screen, drive plate and ignition distributor rotor.
13. Screw the spark plugs into the cylinder head.
14. Attach a bunch of wires of system of ignition and establish a cover of the gauge distributor of ignition.
15. On the M 102 engine, connect the vacuum hose.
16. Connect a reception pipe of mufflers to a final collector.
17. Depending on the year of manufacture of the car, put on the alternator drive belt or multi-ribbed accessory drive belt and adjust its tension.
18. Depending on the vehicle configuration, tighten the bolt of the automatic transmission oil dipstick pipe bracket.
19. Depending on a complete set of the car attach hoses of the conditioner.
20. Install the dipstick tube and insert the dipstick.
21. Install the intake manifold booster.
22. Attach the throttle actuator return spring.
23. Attach vacuum hoses to the inlet pipeline.
24. Connect the fuel supply and drain hoses to the carburetor or to the pressure regulator and fuel quantity distributor of the injection system.
25. Connect the heater and cooling system hoses.
26. Connect the plug connectors.
27. Fill and bleed the cooling system.
28. On vehicles with body positioner, install the pump.
29. Install an air filter with a cold air intake.
30. Connect the wire «masses» to the battery.