50. Cylinder Head Installation
Cylinder Head Installation
Tool Required
J 36660-A Torque Angle Meter
Notice: This engine uses special torque to yield head bolts. This design bolt requires a special tightening procedure. Failure to follow the given procedure will cause head gasket failure and possible engine damage.
1. Clean the threads in the cylinder block.
2. Install a new cylinder head gasket on the cylinder block.
Important: The cylinder head gasket must be installed with the stamp markings facing upward (1).
3. Carefully install the cylinder head on the cylinder block.
Notice: This bolt is designed to permanently stretch when tightened, and therefore MUST be replaced anytime it is removed. The correct part number fastener must be used to replace this type of fastener. Do not use a bolt that is stronger in this application. If the correct bolt is not used, the parts will not be tightened correctly. The system or the components may be damaged.
Notice: Refer to Fastener Notice.
4. Install the cylinder head bolts and washers into the cylinder head.
Progressively torque the cylinder head bolts using two steps in the sequence shown.
Tighten the cylinder head bolts to 49 N.m (36 lb ft).
Mark the front of the cylinder head bolt with paint then tighten the cylinder head bolts 90 degrees.
5. Check to ensure the paint mark is not at a 90 degrees angle to the front of the engine.