Cylinder Head Assembly: Service and Repair

1. Relieve fuel system pressure as outlined under Technician Safety Information, then drain engine coolant into a suitable container.
2. Drain engine oil into a suitable container and remove air intake hose.

Fig. 10 Cylinder Head Replacement (Part 1 Of 2):

Fig. 10 Cylinder Head Replacement (Part 2 Of 2):

3. Remove cylinder head and gasket in numbered sequence shown in Fig. 10, noting the following:

Fig. 11 Camshaft Sprocket Secured To Timing Belt:

a. When removing camshaft sprocket, rotate crankshaft in direction of normal rotation until timing marks align, then secure timing belt to sprocket as shown in Fig. 11 to maintain relative position of sprocket to belt.

Fig. 12 Camshaft Sprocket Removal:

b. Remove sprocket with timing belt attached using special tools as shown, Fig. 12. Do not rotate crankshaft with camshaft sprocket removed.

Fig. 13 Cylinder Head Bolt Loosening Sequence:

c. Loosen cylinder head bolts in two or three steps using loosening sequence shown, Fig. 13. Avoid damaging plug guides during bolt removal.
4. Reverse procedure to install, noting the following:

Fig. 14 Cylinder Head Gasket Installation Orientation:

a. Install cylinder head gasket as shown, Fig. 14.
b. Before installing cylinder head bolts, measure length of each. Distance from bottom of bolt head to bottom of bolt should be 3.91 inches. Replace bolts if not within specification.

Fig. 15 Cylinder Head Bolt Tightening Sequence:

c. Using sequence shown in Fig. 15, torque cylinder head bolts to 58 ft. lbs., then fully loosen bolts in sequence as shown in Fig. 13. Using tightening sequence shown in Fig. 15, tighten bolts in three steps; first step, torque bolts to 15 ft. lbs.; second step, 1/4 turn; third step, anadditional 1/4 turn.