Removal
Using an inertia hammer to remove the upper timing chain guide mounting pin
Unscrewing the intake manifold support bracket mounting bolt
Location of the water pump hose clamp to the cylinder head
Location of the automatic transmission oil dipstick tube mounting bolt to the cylinder head
Location of the contact block (1) on the diagnostic connector bracket (2)
Removal the cylinder head from the engine
Cylinder head bolt tightening sequence
1. The cylinder head is removed on a cold engine together with the intake and exhaust manifolds.
2. Remove the ground cable from the battery.
3. Open and position the hood in a vertical position.
4. Drain the coolant from the cooling system.
5. Remove the camshaft sprocket.
6. Screw the additional bolt into the upper chain guide mounting pin. Using a countersink hammer and an adapter, remove the chain guide mounting pin by the head of the bolt (see Fig. Using an inertia hammer to remove the upper timing chain guide mounting pin).
7. Remove the bolt securing the dipstick tube bracket to the cylinder head.
8. Unscrew and remove the two intake manifold support brackets (see fig. Unscrewing the intake manifold support bracket mounting bolt).
9. Loosen the clamp and remove the short water pump hose from the cylinder head (see Fig. Location of the water pump hose clamp to the cylinder head).
10. Loosen the clamp and remove the heater coolant return hose from the fitting on the rear of the cylinder head.
11. On models with automatic transmission, remove the bolt securing the oil dipstick tube to the cylinder head (see Fig. Location of the automatic transmission oil dipstick tube mounting bolt to the cylinder head).
12. Relieve the pressure in the fuel system and disconnect the fuel supply and return lines.
13. Disconnect the accelerator cable from the throttle lever.
14. On models with automatic transmission, disconnect the pressure control cable from the throttle linkage.
15. Label and disconnect all electrical connectors from the cylinder head.
16. Remove the engine wire harness from the engine mounting brackets.
17. Disconnect the vacuum hose and electrical connector from the ignition control unit.
18. Remove the screw and disconnect the wire from the connector block on the diagnostic connector bracket (see Fig. Location of the contact block on the diagnostic connector bracket).
19. Unscrew the diagnostic connector and disconnect the gray connector on the left side of the socket.
20. Disconnect the exhaust pipe from the exhaust manifold.
21. Check that all hoses and electrical connectors are disconnected from the cylinder head.
22. Loosen the cylinder head bolts evenly and gradually in the reverse order to that shown in the figure Cylinder Head Bolt Tightening Sequence.
23. Remove the cylinder head mounting bolts.
24. Attach the cylinder head to the lifting slings and carefully lift the head out of the engine compartment (see Fig. Removing the cylinder head from the engine).
25. Remove the cylinder head gasket.
Preparing the head for installation
Measuring the length of the cylinder head bolt
1. The mating surfaces of the cylinder head and block must be completely clean. Use a hard plastic or wooden scraper to clean them. Be careful when cleaning, as the aluminum alloy is very easy to damage. Check that carbon deposits do not get into the oil and water channels. This is especially important for the lubrication system, as carbon deposits can block the oil supply to the engine components. If necessary, clean the channels, check the mating surfaces of the head and cylinder block for nicks, deep scratches and other damage. If the defects are small, they can be removed by mechanical processing. In case of significant defects, the parts are subject to replacement.
2. Using a metal ruler and feeler gauge, check the flatness of the mating surfaces.
3. Clean the bolt holes in the cylinder block. Driving a bolt into oil-filled holes can cause the block to burst due to hydraulic pressure.
4. Measure the length of the bolts from the base of the head (see fig. Measuring the length of the cylinder head bolt). If the bolt length exceeds the allowable limits, replace all bolts in the set.
Installation
1. Check that the crankshaft and camshaft timing marks are aligned with the pointers.
2. Install the cylinder head gasket onto the guide pins on the cylinder block.
3. Install the cylinder head carefully.
4. Lubricate the threads and the underside of the bolt head, insert the cylinder head bolts and tighten them by hand.
5. Tighten the cylinder head bolts gradually and evenly in several stages in the sequence shown in the figure Cylinder head bolt tightening sequence.
6. Connect the exhaust pipe to the exhaust manifold.
7. Connect the vacuum hoses and electrical connectors to the cylinder head. Secure the engine wiring harness with clamps.
8. On models with automatic transmission, connect the pressure control cable to the throttle linkage.
9. Connect the accelerator cable to the throttle lever.
10. Connect the fuel supply and return lines.
11. On automatic transmission models, attach the transmission oil dipstick tube to the engine.
12. Install the coolant supply hose to the heater to the fitting on the rear of the cylinder head. Connect the coolant supply hose from the water pump.
13. Install the two intake manifold support brackets.
14. Screw in the bolt securing the dipstick tube bracket to the cylinder head.
15. Check the correct position of the drive chain guide and install the guide locating pin.
16. Install the camshaft sprocket.
17. Add coolant to the cooling system.
18. Connect the ground wire to the battery and close the hood.