Cylinder Head Assembly: Service and Repair

Fig. 1 Relieving fuel system pressure:

1. Disconnect battery ground cable, drain cooling system, then position No. 1 cylinder at TDC compression stroke.
2. Disconnect air intake duct and vacuum hose, then remove air cleaner cover.
3. Relieve fuel system pressure by loosening the service bolt on top of fuel filter, Fig. 1, one complete revolution, then disconnect fuel lines from filter.
4. Remove engine secondary ground cable from valve cover.
5. Disconnect brake booster vacuum tube from intake manifold.
6. Loosen throttle cable locknut and adjusting nut, then slip cable end out of throttle bracket and accelerator linkage. Use care to avoid bending cable when removing it.
7. Disconnect ignition wires from spark plugs, then remove distributor assembly.
8. Disconnect vacuum lines from charcoal canister.
9. Disconnect No. 1 control box emission hoses from tubing manifold.
10. On models equipped with A/C, disconnect idle control solenoid hoses.
11. On all models, disconnect engine sub-harness connectors and couplers from cylinder head and intake manifold.
12. Disconnect oxygen sensor electrical connector.
13. Disconnect upper radiator hose, heater inlet hose and bypass inlet hose from cylinder head.
14. Remove coolant hose between thermostat housing and intake manifold.
15. Remove exhaust manifold and bracket attaching bolts, then the manifold.
16. Remove intake manifold and bracket attaching bolts.
17. Disconnect hose between intake manifold and breather chamber, then remove valve cover and upper timing belt cover.
18. Loosen timing belt tension bolt and remove the belt. Do not bend or crimp timing belt more than 90° or to less than 1 inch in diameter.
19. Remove timing belt lower cover attaching bolts from cylinder head.
20. Remove camshaft holder attaching bolts, then the camshaft holders, camshaft and rocker arms.
21. Remove cylinder head attaching bolts and the cylinder head. Loosen cylinder head attaching bolts 1/3 turn at a time until all bolts are loose, to prevent warpage.
22. Reverse procedure to install, noting the following:
a. Clean cylinder head and engine block mating surfaces prior to installation.
b. Ensure UP mark on timing belt pulley is positioned on top when installing cylinder head.
c. Install cylinder head using a new gasket, ensuring dowel pins and oil control jet are properly aligned with cutouts in gasket.
d. Apply clean engine oil to cylinder head attaching bolts and washers.

Fig. 9 Cylinder head bolt torque sequence. Integra:

e. Torque cylinder head attaching bolts in two steps; first to 22 ft. lbs., then to 48 ft. lbs. in sequence, Fig. 9.






f. Install timing belt with cylinder No. 1 at TDC of compression stroke and timing marks aligned as shown in Fig. 10.
g. Torque intake manifold nuts to specifications in crossing pattern in two or three steps.